Monitoring IP

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Monitoring IP
This section shows how to set a statistics baseline and use the show commands to view your IP configuration and monitor IP interfaces and statistics.

Establishing a Baseline

IP statistics are stored in system counters. The only way to reset the system counters is to reboot the system. You can, however, establish a baseline for IP statistics by setting a group of reference counters to zero.

baseline ip

Sets a statistics baseline for IP statistics.

The system implements the baseline by reading and storing the statistics at the time the baseline is set and then subtracting this baseline whenever baseline-relative statistics are retrieved.

Use the delta keyword with IP show commands to specify that baselined statistics are to be shown.

Example
host1#baseline ip
There is no no version.

baseline ip tcp

Sets a statistics baseline for TCP statistics.

The system implements the baseline by reading and storing the statistics at the time the baseline is set and then subtracting this baseline whenever baseline-relative statistics are retrieved.

Use the delta keyword with IP show commands to specify that baselined statistics are to be shown.

Example
host1#baseline ip tcp
There is no no version.

baseline ip udp

Sets a statistics baseline for UDP statistics.

The system implements the baseline by reading and storing the statistics at the time the baseline is set and then subtracting this baseline whenever baseline-relative statistics are retrieved.

Use the delta keyword with IP show commands to specify that baselined statistics are to be shown.

Example
host1#baseline ip udp
There is no no version.

IP show Commands

You can monitor the following aspects of IP using show ip commands:

To Display

Command

Access lists

show access-list
show ip as-path-access-list

ARP

show arp

General IP information

show ip

IP addresses

show ip address

Community lists

show ip community-list

Prefix for the names of dynamic IP shared interfaces

show ip dynamic-interface-prefix

Routing table

show ip forwarding-table slot

Interfaces

show ip interface

Shared IP interfaces

show ip interface shares

Subscriber interfaces

show ip demux interface

Protocols

show ip protocols

Redistribution policies

show ip redistribute

Routes

show ip route

Interfaces and next hops

show ip route slot

Static routes

show ip static

TCP statistics

show ip tcp statistics

Traffic

show ip traffic

UDP statistics

show ip udp statistics

Profiles

show ip profile

Route maps

show route-map

To set a statistics baseline for IP interfaces, use the baseline ip tcp and baseline ip udp commands. Use the delta keyword with IP show commands to specify that baselined statistics are to be shown.

You can use the output filtering feature of the show command to include or exclude lines of output based on a text string that you specify. See ERX System Basics Configuration Guide, Chapter 2, Command Line Interface, for details.

show access-list

Use to display information about access lists, including the instances of each access list.

Example
host1#show access-list
IP Access List 1:
    permit ip 172.31.192.217 0.0.0.0 0.0.0.0 255.255.255.255
    permit ip 12.40.0.0 0.0.0.3 0.0.0.0 255.255.255.255
    deny ip 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255
IP Access List 2:
    permit ip 172.19.0.0 0.0.255.255 0.0.0.0 255.255.255.255
    deny ip 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255
IP Access List 10:
    permit ip 0.0.0.0 255.255.255.255 0.0.0.0 
255.255.255.255
IP Access List 11:
    deny ip 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255 
show arp

Use to display information about ARP.

Field descriptions

Address - IP address of the entry

Age - time to live for this entry in seconds

Hardware Addr - physical (MAC) address of the entry

Interface - interface-specifier of the entry (for example, FastEthernet6/0 is an Ethernet interface on slot 6, port 0)

* - indicates that an ARP entry was added because of an arp-validate command, rather than just an arp command.

Example
host1#show arp
        Address    Age   Hardware Addr  Interface
 172.31.192.217   21340  00d0.58f2.67e0 loopback1
    192.168.1.0   20730  00e0.09ed.5312 fastEthernet6/0 *
    192.168.1.1   12550  00e0.b06a.4c75 fastEthernet6/0 *
  192.168.1.217   21600  0090.1a00.0230 fastEthernet6/0 *
  192.168.1.255   21600  00f0.c2d1.1200 fastEthernet6/0 *
      12.40.0.2   24320  0020.6393.4233 atm5/0.1
     172.18.2.1   21600  0020.bed2.8738 atm5/1.1
     172.18.2.2   21600  0020.5b91.60f2 atm5/1.1
 172.31.192.206   21600  00d0.43b5.1032 atm5/1.1
show ip

Use to display general information on IP.

Example
host1#show ip
  IP Router Id: 192.168.1.155
  Router Name: default
  Default TTL: 60
  Reassemble Timeout: 30 
show ip as-path-access-list

Use to display information about AS-path access lists.

Example
host1#show ip as-path-access-list
AS Path Access List 1:
    permit  .*
AS Path Access List 2:
    deny  .*
AS Path Access List 3:
    permit  _109_
    deny  .*
AS Path Access List 4:
    permit  _109$
    deny  .*
AS Path Access List 10:
    deny  _109$
    permit  ^108_
    deny  .*
show ip address

Use to display detailed or summary information on a particular IP interface.

Field descriptions

Network Protocols - network protocols configured on this interface

Internet address - IP address and subnet mask of this interface

Broadcast address - broadcast address of this interface

Operational MTU - MTU of this interface

Administrative MTU - value of the MTU if it has been administratively overridden using the configuration

Operational speed - speed of the interface

Administrative speed - value of the speed if it has been administratively overridden using the configuration

Discontinuity Time - value of the SysUpTime when the interface statistics last started being valid

Router advertisement - status of router discovery advertisement: enabled, disabled

Proxy Arp - status of the feature: enabled, disabled

Administrative debounce-time - configured time in milliseconds that an interface event has to be in the same state before being reported

Operational debounce-time - time in milliseconds that an interface event has to be in the same state before being reported

Access routing - access route addition: enabled, disabled

Multipath mode - equal cost multipath mode method: hashed, round robin

In Received Packets, Bytes - total number of packets and bytes received on this interface

Unicast Packets, Bytes - unicast packets and bytes received on the IP interface; link-local received multicast packets (non-multicast-routed frames) are counted as unicast packets

Multicast Packets, Bytes - multicast packets and bytes received on the IP interface which are then multicast-routed are counted as multicast packets

In Policed Packets, Bytes - packets and bytes that were received and dropped because of rate limits

In Error Packets - number of packets received with errors

In Invalid Source Address Packets - packets received with invalid source address (for example, spoofed packets)

In Discarded Packets - packets received that were discarded for reasons other than rate limits, errors, and invalid source address

Out Forwarded Packets, Bytes - total number of packets and bytes that were sent from this interface

Unicast Packets, Bytes - unicast packets and bytes that were sent from this interface

Multicast Routed Packets, Bytes - multicast packets and bytes that were sent from this interface

Out Scheduler Drops Committed Packets, Bytes - outgoing packets and bytes dropped by the scheduler even though they had a committed traffic contract

Out Scheduler Drops Conformed Packets, Bytes - outgoing packets and bytes dropped by the scheduler even though they conformed to the traffic contract

Out Scheduler Drops Exceeded Packets, Bytes - outgoing packets and bytes that were dropped by the scheduler because they exceeded the contract

Out Policed Packets, Bytes - outgoing packets and bytes dropped because of rate limiters

Out Discarded Packets - outgoing packets that were discarded for reasons other than those dropped by the scheduler and those dropped because of rate limits

Example
host1#show ip address 10.6.136.73
fastEthernet0/0 is up, line protocol is up
  Network Protocols: IP
  Internet address is 10.6.136.73/255.255.128.0
  Broadcast address is 255.255.255.255
  Operational MTU = 0  Administrative MTU = 0
  Operational speed = 1  Administrative speed = 0
  Discontinuity Time = 5766
  Router advertisement = disabled
  Proxy Arp = disabled
  Administrative debounce-time = 10 mSecs
  Operational debounce-time    = disabled
  Access routing = disabled
  Multipath mode = hashed
  In Received Packets 2849, Bytes 759428
    Unicast Packets 2849, Bytes 759428
    Multicast Packets 0, Bytes 0
  In Policed Packets 0, Bytes 0
  In Error Packets 0
  In Invalid Source Address Packets 0
  In Discarded Packets 0
  Out Forwarded Packets 1866, Bytes 84650
    Unicast Packets 1866, Bytes 84650
    Multicast Routed Packets 0, Bytes 0       
  Out Scheduler Drops Committed Packets 0, Bytes 0
  Out Scheduler Drops Conformed Packets 0, Bytes 0
  Out Scheduler Drops Exceeded  Packets 0, Bytes 0
  Out Policed Packets 0, Bytes 0
  Out Discarded Packets 0 
show ip community-list

Use to display routes that are permitted by a BGP community list.

Example
host1#show ip community-list
Community List 1:
  permit 752877569 (11488:1)
  permit 752877570 (11488:2)
  permit 752877571 (11488:3)
  permit 752877572 (11488:4)
Community List 2:
  permit 4294967043 (local-as)
show ip demux interface

Use to display information about subscriber interfaces.

Field descriptions

Prefix/Length - source or destination addresses that the subscriber interface demultiplexes

SA/DA - demultiplexing method for subscriber interface

SA - source address

DA - destination address

Subscriber-Intf - name of shared interface on which subscriber interface is configured

VR/VRF - name of VR or VRF on which the subscriber interface is configured

Description - text description for the IP interface on which subscriber interface is configured (added with the ip description command)

Example
host1#show ip demux interface fastEthernet 2/0
Prefix/Length      SA/DA  Subsriber-Intf  VR/VRF         Description
132.2.2.2/32       SA     ip subsc1       3              subsc1@test
132.2.2.3/32       SA     ip subsc2       3              subsc2@test
132.2.2.4/32       SA     ip subsc3       3              subsc3@test
132.2.2.5/32       SA     ip subsc4       3              subsc4@test
show ip dynamic-interface-prefix

Use to display the prefix for the names of dynamic IP shared interfaces.

Example
host1#show ip dynamic-interface-prefix
Dynamic Interface Prefix: dyn 
show ip forwarding-table slot

Use to display details on the routing table for a specific line module, including the memory used by each virtual router configured on the line module and free memory available on the module.

The Load Errors field records any failed routing table distribution attempt as an error. Attempts can fail for many reasons during normal operation; a failed attempt does not necessarily indicate a problem. It is normal to see many Load Errors per day.

If the Status field does not indicate Valid, then the routing table distribution has failed constantly for that VR. It is normal and appropriate behavior for the Status field to indicate Valid while the Load Error field increases daily.

Field descriptions

Free Memory - amount of routing table memory free on the line module, in kilobytes

Virtual Router - name of the virtual router(s) configured on the line module

Memory (KB) - amount of routing table memory consumed by the virtual router, in kilobytes

Load Errors - count of errors made while loading the routing table on the line module

Status - indicates whether the routing table for the virtual router is valid

Example
host1#show ip forwarding-table slot 9
Free Memory = 3,166KB
  Virtual Router      Memory       Load Errors     Status
                      (KB)
----------------     ---------    -------------    --------
   vr1                 4128              0          Valid
   vr2                 3136              0          Valid
   vr3                 2256              0          Valid
   vr4                 1512              0          Valid
 default               1024              0          Valid
-----------------------------------------------------------
show ip interface

Use to display the current state of all IP interfaces or the IP interfaces you specify.

The default is all interface types and all interfaces.

Field descriptions

interface - interface type and interface specifier

interface status - status of the interface

line protocol - status of the line protocol

Description - text description or alias if configured for the interface

Link up/down trap - status of SNMP link up/down traps on the interface

Internet address - IP address of the interface

IP Statistics Rcvd:

local destination - frames with this router as their destinations

hdr errors - number of packets containing header errors

addr errors - number of packets containing addressing errors

unkn proto - number of packets received containing unknown protocols

discards - number of discarded packets

IP Statistics Frags:

reasm ok - number of reassembled packets

reasm req - number of requests for reassembly

reasm fails - number of reassembly failures

frag ok - number of packets fragmented successfully

frag req - number of frames requiring fragmentation

frag fails - number of packets unsuccessfully fragmented

IP Statistics Sent:

generated - number of packets generated

no routes - number of packets that could not be routed

discards - number of packets that could not be routed that were discarded

ICMP Statistics Rcvd:

errors - error packets received

dst unreach - packets received with destination unreachable

time exceed - packets received with time-to-live exceeded

param probs - packets received with parameter errors

src quench - source quench packets received

redirect - receive packet redirects

echo req - echo request (PING) packets

echo rpy - echo replies received

timestamp req - requests for a timestamp

timestamp rpy - replies of timestamp requests

addr mask req - mask requests sent

addr mask rpy - mask replies sent

ICMP Statistics Sent:

errors - error packets sent

dst unreach - packets sent with destination unreachable

time excd - packets sent with time-to-live exceeded

param probs - packets sent with parameter errors

src quench - source quench packets sent

redirect - send packet redirects

timestamp req - requests for a timestamp

timestamp rpy - replies to timestamp requests

addr mask req - address mask requests

addr mask rpy - address mask replies

In Received Packets, Bytes - total number of packets and bytes received on the IP interface

Unicast Packets, Bytes - unicast packets and bytes received on the IP interface; link-local received multicast packets (non-multicast-routed frames) are counted as unicast packets

Multicast Packets, Bytes - multicast packets and bytes received on the IP interface which are then multicast-routed are counted as multicast packets

In Forwarded Packets, Bytes - packets and bytes forwarded into an output IP interface

In Total Dropped Packets, Bytes - total number of packets and bytes that were dropped on the interface; sum of all the drop reasons indented below this field

In Policed Packets - packets discarded on a receive IP interface due to token bucket limiting

In Invalid Source Address Packets - packets discarded on a receive IP interface due to invalid IP source address (sa-validate enabled)

In Error Packets - packets discarded on a receive IP interface due to IP header errors

In Discarded Packets - packets discarded on the ingress interface due to a configuration problem rather than a problem with the packet itself

In Fabric Dropped Packets - packets discarded on a receive IP interface due to internal fabric congestion

Out Forwarded Packets, Bytes - total number of packets and bytes forwarded out the IP interface

Unicast Packets, Bytes - unicast packets and bytes forwarded out the IP interface

Multicast Routed Packets, Bytes - multicast packets and bytes forwarded out the IP interface

Out Requested Packets, Bytes - packets and bytes requested to be forwarded out an IP interface

Out Total Dropped Packets, Bytes - total number of packets and bytes that were discarded on the egress interface; sum of all the drop reasons indented below this field

Out Scheduler Drops Committed Packets, Bytes - packets and bytes dropped by the scheduler even though they had a committed traffic contract

Out Scheduler Drops Conformed Packets, Bytes - packets and bytes dropped by the scheduler even though they conformed to the traffic contract

Out Scheduler Drops Exceeded Packets, Bytes - packets and bytes dropped by the scheduler because they exceeded the contract

Out Policed Packets - packets discarded on the egress interface due to rate limiting

Out Discarded Packets - packets discarded on the egress interface due to a configuration problem rather than a problem with the packet itself

Out Fabric Dropped Packets - packets dropped due to internal fabric congestion

Example 1
host1#show ip interface detail FastEthernet 0/0
FastEthernet0/0 is up, line protocol is up
  Description: boston00 fast ethernet interface
  Link up/down trap is disabled                    
  Internet address is 1.1.1.2/255.255.255.0
IP statistics:
  Rcvd:  0 local destination
         0 hdr errors, 0 addr errors
         0 unkn proto, 0 discards
  Frags: 0 reasm ok, 0 reasm req, 0 reasm fails
         0 frag ok, 0 frag creates, 0 frag fails
  Sent:  31656835 generated, 0 no routes, 0 discards
ICMP statistics:
  Rcvd:  0 errors, 0 dst unreach, 0 time exceed
         0 param probs, 0 src quench, 0 redirect,
         0 echo req, 31656816 echo rpy
         0 timestmp req, 0 timestmp rpy
         0 addr mask req, 0 addr mask rpy
  Sent:  0 errors, 0 dst unreach, 0 time excd
         0 param probs, 0 src qnch, 0 redirect
         0 timestamp req, 0 timestamp rpy
         0 addr mask req, 0 addr mask rpy
In Received Packets 246220, Bytes 344624800
    Unicast Packets 246162, Bytes 344621410
    Multicast Packets 58, Bytes 3390
In Forwarded Packets 245464, Bytes 343566400
In Total Dropped Packets 756, Bytes 1058400
    In Policed Packets 756
    In Invalid Source Address Packets 0
    In Error Packets 0
    In Discarded Packets 0
    In Fabric Dropped Packets 0
  Out Forwarded Packets 117, Bytes 87297
    Unicast Packets 117, Bytes 87297
    Multicast Routed Packets 0, Bytes 0
  Out Requested Packets 117, Bytes 87297
  Out Total Dropped Packets 0, Bytes 0
    Out Scheduler Drops Committed Packets 0, Bytes 0
    Out Scheduler Drops Conformed Packets 0, Bytes 0
    Out Scheduler Drops Exceeded  Packets 0, Bytes 0
    Out Policed Packets 0
    Out Discarded Packets 0
    Out Fabric Dropped Packets 0
If you are losing packets because of fabric congestion, you can use the In Fabric Dropped Packets and Out Fabric Dropped Packets statistics to help determine the location of the bottleneck. Both statistics count the same thing—the same packets dropped because of fabric congestion—but in different directions.

At any given time, the total number of packets dropped in the fabric for all interfaces in the chassis is equal to the sum of all In Fabric Dropped Packets for all interfaces in the chassis, which equals the sum of all Out Fabric Dropped Packets for all interfaces in the chassis.

Packets not dropped for another listed reason are considered to have been dropped in the fabric. The system calculates In Fabric Dropped Packets by subtracting the total number of inbound packets dropped for all other reasons from the In Total Dropped Packets number. The system calculates Out Fabric Dropped Packets by subtracting the total number of outbound packets dropped for all other reasons from the Out Total Dropped Packets number.

The system calculates In Total Dropped Packets by subtracting In Forwarded Packets from In Received Packets. The system calculates Out Total Dropped Packets by subtracting Out Forwarded Packets from Out Received Packets. These statistics are reported as traffic is moving through the system. It is possible to get false statistics based on packets being forwarded and/or received after polling and based on which of the statistics is reported first. For example, In Forwarded Packets could be reported as greater than In Received Packets. Rather than displaying In Total Dropped Packets as a negative value, the command displays it as the sum of all drop reasons other than fabric drops; fabric drops are reported as 0, but might actually be nonzero. If you halt traffic, the In Total Dropped Packets and Out Total Dropped Packets values are always correct.

show ip interface shares

Use to display information about shared IP interfaces.

If you specify an IP interface specifier, the command displays information only for that interface and any shared IP interfaces associated with it.

Field descriptions

Interface - interface specifier or name of the interface

IP-Address - IP address associated with the interface

Status - operational state of the interface

Protocol - state of the protocol running on the interface

Virtual Router - virtual router in which the interface is configured

Example 1
host1#show ip interface shares brief 
Interface        IP-Address         Status    Protocol   Virtual Router
null0            255.255.255.255/32  up         up
fastEthernet0/0  10.13.5.17/24       up         up
loopback100      202.1.1.1/24        up         up
atm4/0.1         10.1.1.1/24         up         up
ip si0           Unnumbered          up         up        vr-a 
ip si1           Unnumbered          up         up        vr-b:vrf-1  
Example 2
host1#show ip interface shares brief atm 4/0.1 
Interface        IP-Address         Status    Protocol   Virtual Router
atm4/0.1         10.1.1.1/24         up         up
ip si0           Unnumbered          up         up        vr-a 
ip si1           Unnumbered          up         up        vr-b:vrf-1 
Example 3 - for a description of the following fields, see the show ip address command
host1#show ip interface shares atm 4/0.1   
atm4/0.1 is up, line protocol is up
  Network Protocols: IP
  Unnumbered Interface on loopback100
  ( IP address  202.1.1.1 )
  Operational MTU = 1500  Administrative MTU = 0
  Operational speed = 155520000  Administrative speed = 0
  Discontinuity Time = 0
  Router advertisement = disabled
  Administrative debounce-time = disabled
  Operational debounce-time    = disabled
  Access routing = disabled
  Multipath mode = hashed
  In Received Packets 120, Bytes 12000
    Unicast Packets 60, Bytes 6000
    Multicast Packets 60, Bytes 6000
  In Policed Packets 0, Bytes 0
  In Error Packets 0
  In Invalid Source Address Packets 0
  Out Forwarded Packets 101, Bytes 5252
    Unicast Packets 101, Bytes 5252
    Multicast Routed Packets 0, Bytes 0
  Out Scheduler Drops Committed Packets 0, Bytes 0
  Out Scheduler Drops Conformed Packets 0, Bytes 0
  Out Scheduler Drops Exceeded  Packets 0, Bytes 0
  Out Policed Packets 0, Bytes 0
ip si0 is up, line protocol is up
  Network Protocols: IP
  Virtual Router vr-a
  Layer 2 interface atm4/0.1
  Unnumbered Interface on loopback100
  ( IP address  202.1.1.1 )
  Operational MTU = 1500  Administrative MTU = 0
  Operational speed = 155520000  Administrative speed = 0
  Discontinuity Time = 0
  Router advertisement = disabled
  Administrative debounce-time = disabled
  Operational debounce-time    = disabled
  Access routing = disabled
  Multipath mode = hashed
  In Received Packets 0, Bytes 0
    Unicast Packets 0, Bytes 0
    Multicast Packets 0, Bytes 0
  In Policed Packets 0, Bytes 0
  In Error Packets 0
  In Invalid Source Address Packets 0
  Out Forwarded Packets 101, Bytes 5252
    Unicast Packets 101, Bytes 5252
    Multicast Routed Packets 0, Bytes 0
  Out Scheduler Drops Committed Packets 0, Bytes 0
  Out Scheduler Drops Conformed Packets 0, Bytes 0
  Out Scheduler Drops Exceeded  Packets 0, Bytes 0
  Out Policed Packets 0, Bytes 0
ip si1 is up, line protocol is up
  Network Protocols: IP
  Virtual Router vr-b:vrf-1
  Layer 2 interface atm4/0.1
.
.
.
  Out Policed Packets 0, Bytes 0
Example - You can also display statistics for shared IP interfaces with the show ip interface command:
host1#show ip interface ip si0
ip0 is up, line protocol is up
  Network Protocols: IP
  Layer 2 interface atm4/0.1
  Unnumbered Interface on loopback100
  ( IP address  202.1.1.1 )
  Operational MTU = 1500  Administrative MTU = 0
  Operational speed = 155520000  Administrative speed = 0
  Discontinuity Time = 0
  Router advertisement = disabled
  Administrative debounce-time = disabled
  Operational debounce-time    = disabled
  Access routing = disabled
  Multipath mode = hashed
  In Received Packets 0, Bytes 0
    Unicast Packets 0, Bytes 0
    Multicast Packets 0, Bytes 0
  In Policed Packets 0, Bytes 0
  In Error Packets 0
  In Invalid Source Address Packets 0
  Out Forwarded Packets 101, Bytes 5252
    Unicast Packets 101, Bytes 5252
    Multicast Routed Packets 0, Bytes 0
  Out Scheduler Drops Committed Packets 0, Bytes 0
  Out Scheduler Drops Conformed Packets 0, Bytes 0
  Out Scheduler Drops Exceeded  Packets 0, Bytes 0
  Out Policed Packets 0, Bytes 0
show ip profile

Use to display information about a specific IP profile.

Field descriptions

IP profile - profile name

IP address - IP address and subnet mask of the interface or none if the interface is unnumbered

Unnumbered interface - specifier for the unnumbered interface or none if the interface is numbered

Router - router name

Directed Broadcast - enabled or disabled

ICMP Redirects - enabled or disabled

Access Route Addition - enabled or disabled

Source-Address Validation - enabled or disabled

Ignore DF Bit - enabled or disabled

Administrative MTU - MTU size

Example
host1#show ip profile foo
IP profile : foo
IP address                 : none
Unnumbered interface       : none
Router                     :
Directed Broadcast         : Enabled
ICMP Redirects             : Disabled
Access Route Addition      : Enabled
Source-Address Validation  : Enabled
Ignore DF Bit              : Disabled
Administrative MTU         : 0 
show ip protocols

Use to display configured protocols.

Field descriptions

For BGP:

Redistributing - protocol to which BGP is redistributing routes

Default local preference - local preference value

IGP synchronization - status of IGP synchronization: enabled, disabled

Always compare MED - status of multiexit discrimination: enabled, disabled

Router flap damping - status of route dampening: enabled, disabled

Administrative Distance - external, internal, and local administrative distances

Neighbor Address - IP address of the BGP neighbor

Neighbor Incoming/Outgoing update distribute list - number of the access list for outgoing routes

Neighbor Incoming/Outgoing update prefix list - number of the prefix list for incoming or outgoing routes

Neighbor Incoming/Outgoing update prefix tree - number of the prefix tree for incoming or outgoing routes

Neighbor Incoming/Outgoing update filter list - number of filter list for incoming routes

Routing for Networks - network for which BGP is currently injecting routes

For IS-IS:

System Id - 6-byte value of the system

IS-Type - routing type of the router: Level 1, Level 2

Distance - administrative distance for IS-IS learned routes

Address Summarization - aggregate addresses defined in the routing table for multiple groups of addresses at a given level or routes learned from other routing protocols

Routing for Networks - network for which IS-IS is currently injecting routes

For OSPF:

Router ID - OSPF process ID for the router

Distance - administrative distance for OSPF learned routes

Redistributing - protocol to which OSPF is redistributing routes

Address Summarization - aggregate addresses defined in the routing table for multiple groups of addresses at a given level or routes learned form other routing protocols

Routing for Networks - network for which OSPF is currently injecting routes

For RIP:

Router Administrative State - RIP protocol state. Enable means that it is allowed to send and receive updates. Disable means that it may be configured but it is not allowed to run yet.

System Version - RIP versions allowed for sending and receiving RIP updates. The system version is currently set to RIP1, which sends RIP version 1 but will receive version 1 or 2. If the version is set to RIP2, the system will send and receive version 2 only. The default is configured for RIP1.

Update interval - current setting of the update timer (in seconds)

Invalid after - current setting of the invalid timer (in seconds)

hold down time - current setting of the hold down timer (in seconds)

flushed interval - current setting of the flush timer (in seconds)

Filter applied to outgoing route update - access list applied to outgoing RIP route updates

Filter applied to incoming route update - access list applied to incoming RIP route updates

Global route map - route map that specifies all RIP interfaces on the system

Distance - value added to RIP routes added to the IP routing table. The default is 120.

Interface - interface type on which RIP protocol is running

Redistributing - protocol to which RIP is redistributing routes

Routing for Networks - network for which RIP is currently injecting routes

Example
host1#show ip protocols
Routing Protocol is "bgp 100"
  Redistributing: ospf
  Default local preference is 100
  IGP synchronization is enabled
  Always compare MED is disabled
  Router flap damping is disabled
  Administrative Distance: external 20 internal 200 local 200
  Neighbor(s):
    Address 1.1.1.1
    Outgoing update distribute list is 2
    Outgoing update prefix list is efg
    Incoming update prefix tree is abc
    Incoming update filter list is 1
  Routing for Networks:
    192.168.1.0/24
Routing Protocol is "isis isisOne"
  System Id: 0000.0000.0011.00  IS-Type: level-1-2
  Distance: 115
  Address Summarization:
    None
  Routing for Networks:
    fastEthernet0/0
Routing Protocol is "ospf 1" with Router ID 192.168.1.151
  Distance is 110
  Redistributing: isis
  Address Summarization:
    None
  Routing for Networks:
    192.168.1.0/255.255.255.0 area 0.0.0.0
Routing Protocol is "rip"
  Router Administrative State: enable
  System version RIP1: send = 1, receive = 1 or 2
  Update interval: 30 seconds
  Invalid after: 180  seconds
  hold down time: 120 seconds
  flushed interval: 300 seconds
  Filter applied to outgoing route update is not set
  Filter applied to incoming route update is not set
  No global route map
  Distance is 120
  Interface         Tx   Rx   Auth
  fastEthernet0/0   1    1,2  none
  Redistributing: ospf
  Routing for Networks:
    192.168.1.0/255.255.255.0 
show ip redistribute

Use to display configured route redistribution policy.

Field descriptions

To - protocol that routes are distributed into

From - protocol that routes are distributed from

status - redistribution status

route map number - number of the route map

Example
host1#show ip red
To ospf, From static is enabled with route map 4
To ospf, From connected is enabled with route map 3
show ip route

Use to display the current state of the routing table, including routes not used for forwarding.

You can display all routes, a specific route, best route to a resolved domain name, all routes beginning with a specified address, routes for a particular protocol (BGP, IS-IS, OSPF, or RIP), locally connected routes, internal control routes, static routes, or summary counters for the routing table.

Field descriptions

Type - protocol type

Prefix - IP address prefix

Length - prefix length

Next Hop - IP address of the next hop to the route, whether it is a local interface or another router

Dist - administrative distance for the route; see Table 2-4

Met - number of hops

Intf - interface type and interface specifier

Example 1
host1#show ip route
Protocol/Route type codes:
  I1- ISIS level 1, I2- ISIS level2,
  I- route type intra, IA- route type inter, E- route type external,
  i- metric type internal, e- metric type external,
  O- OSPF, E1- external type 1, E2- external type2,
  N1- NSSA external type1, N2- NSSA external type2
  Prefix/Length    Type    Next Hop       Dist/Met   Intf
  -------------    ----    --------       --------   ------
  172.16.2.0/24     Bgp     192.168.1.102   20/1       fastEthernet0/0
  10.10.0.112/32    Static  192.168.1.1     1/1        fastEthernet0/0
  10.1.1.0/24       Connect 10.1.1.1        0/1        atm3/0.100
Example 2
host1#show ip route static
Protocol/Route type codes:
  I1- ISIS level 1, I2- ISIS level2,
  I- route type intra, IA- route type inter, E- route type external,
  i- metric type internal, e- metric type external,
  O- OSPF, E1- external type 1, E2- external type2,
  N1- NSSA external type1, N2- NSSA external type2
 Prefix/Length  Type   Next Hop   Dist/Met  Intf
 -------------  ----   --------   --------  --------------
10.10.0.112/32  Static 192.168.1.1  1/1     fastEthernet0/0
Example 3
host1#show ip route summary
5 total routes, 720 bytes in route entries
0 isis routes
0 rip routes
1 static routes
1 connected routes
0 bgp routes
0 ospf routes
3 other internal routes
0 access routes
0 internally created access host routes
Last route added/deleted: 0.0.0.0/0 by StaticLow
At THU MAR 09 2000 05:22:49 UTC 
Example 4
host1#show ip route all
Protocol/Route type codes:
  I1- ISIS level 1, I2- ISIS level2,
  I- route type intra, IA- route type inter, E- route type external,
  i- metric type internal, e- metric type external,
  O- OSPF, E1- external type 1, E2- external type2,
  N1- NSSA external type1, N2- NSSA external type2
  Prefix/Length      Type     Next Hop          Dist/Met    Intf
  -------------      ----     --------          --------    ------
  0.0.0.0/0        Static  192.168.1.1      1/1        fastEthernet0/0

1.1.1.1/32       I2-E-i  192.168.1.105    115/10     fastEthernet0/0

6.6.6.0/24       Static  192.168.1.1      1/1        fastEthernet0/0

6.33.5.0/24      Static  0.0.0.0          1/1        loopback2

8.8.8.0/24       I2-E-i  192.168.1.105    115/10     fastEthernet0/0

9.9.9.9/32       I2-E-i  192.168.1.105    115/10     fastEthernet0/0

10.0.0.0/8       I2-E-i  192.168.1.105    115/10     fastEthernet0/0

10.10.0.156/32   Static  192.168.1.1      1/1        fastEthernet0/0

11.1.1.1/32      I2-E-i  192.168.1.105    115/10     fastEthernet0/0

11.11.11.12/32   I2-I-i  192.168.1.105    115/10     fastEthernet0/0

22.2.0.0/16      I2-I-i  92.168.1.105     115/10     fastEthernet0/0

34.0.0.0/8       I2-E-i  192.168.1.105    115/10     fastEthernet0/0

172.20.32.0/24   Static  192.168.1.1      1/1        fastEthernet0/0

174.20.32.0/24   I2-I-i  192.168.1.105    115/20     fastEthernet0/0

176.20.32.0/24   Connect 176.20.32.1      0/1        loopback1

192.168.1.0/24   Connect 192.168.1.214    0/1        fastEthernet0/0

201.1.1.0/24     I2-E-i  192.168.1.105    115/10     fastEthernet0/0

201.2.1.0/24     I2-E-i  192.168.1.105    115/10     fastEthernet0/0

201.3.1.0/24     I2-E-i  192.168.1.105    115/10     fastEthernet0/0

202.1.1.1/32     I2-E-i  192.168.1.105    115/10     fastEthernet0/0

207.1.1.0/24     I2-E-i  192.168.1.105    115/10     fastEthernet0/0
show ip route slot

Use to display the interface and next hop for an IP address in the routing table of a line module.

slotNumber - number of slot containing the line module for which the information is displayed

ipAddress - IP address to look up in the routing table

A next hop is displayed only for protocols where ARP is used to resolve the addresses, such as for FastEthernet, GigabitEthernet, bridged Ethernet over ATM, and so on.

Field descriptions

IP address - address reachable via the interface

Interface - interface type and specifier associated with the IP address; displays "Local Interface" if a special interface index is present in the routing table for special IP addresses, such as broadcast addresses

Next Hop - IP address of the next hop router to reach the IP address; displays "---" if no next hop is associated with the IP address

Example 1
host1#show ip route slot 6 10.10.0.231
IP address     Interface            Next Hop
------------   ----------------     ------------
10.10.0.231    fastEthernet 6/0     10.10.0.231
Example 2
host1#show ip route slot 9 90.248.1.2
IP address     Interface            Next Hop
------------   ----------------     ------------
90.248.1.2     serial9/23:2         ---
Example 3
host1#show ip route slot 9 90.249.255.255
IP address     Interface            Next Hop
------------   ----------------     ------------
90.249.255.255 Local Interface      ---
show ip static

Use to display the status of static routes in the routing table.

You can specify an IP mask that filters specific routes.

Field descriptions

Prefix - IP address prefix

Length - prefix length

Next Hop - IP address of the next hop

Met - number of hops

Dist - administrative distance of the route; see Table 2-4

Tag - tag value of the route

Intf - interface type and interface specifier

Example
host1#show ip route static
Prefix/Length:  Next Hop:     Met:  Dist: Tag:  Intf:
10.2.0.0/24     192.168.1.1   1     1     0     ethernet6/0
10.2.1.0/24     192.168.1.1   1     1     1     ethernet6/0
172.31.1.48/32  172.18.2.2    1     1     0     atm5/1.1
show ip tcp statistics

Use to display TCP statistics.

Field descriptions

TCP Global Statistics Connections:

attempted - number of outgoing TCP connections attempted

accepted - number of incoming TCP connections accepted

established - number of TCP connections established

TCP Global Statistics Rcvd:

total pkts - total number of packets received

in-sequence pkts - number of packets received in sequence

bytes - number of bytes received

chksum err pkts - number of checksum error packets received

authentication err pkts - number of authentication error packets received

bad offset pkts - number of bad offset packets received

short pkts - number of short packets received

duplicate pkts - number of duplicate packets received

out of order pkts - number of packets received out of order

TCP Global Statistics Sent:

total pkts - total number of packets sent

data pkts - number of data packets sent

bytes - number of bytes sent

retransmitted pkts - number of packets retransmitted

retransmitted bytes - number of bytes retransmitted

TCP Session Statistics

Local addr - local address of the TCP connection

Local port - local port number of the TCP connection

Remote addr - remote address of the TCP connection

Remote port - remote port number of the TCP connection

State - current state of the TCP connection

Authentication - authentication status of the TCP connection

TCP Session Statistics Rcvd:

total pkts - total number of packets received on the TCP connection

in-sequence pkts - number of packets received in sequence on the TCP connection

bytes - number of bytes received on the TCP connection

chksum err pkts - number of checksum error packets received on the TCP connection

bad offset pkts - number of bad offset packets received on the TCP connection

short pkts - number of short packets received on the TCP connection

duplicate pkts - number of duplicate packets received on the TCP connection

out of order pkts - number of packets received out of order on the TCP connection

TCP Session Statistics Sent:

total pkts - total number of packets sent on the TCP connection

data pkts - number of data packets sent on the TCP connection

bytes - number of bytes sent on the TCP connection

retransmitted pkts - number of packets retransmitted on the TCP connection

retransmitted bytes - number of bytes retransmitted on the TCP connection

Example
host1#show ip tcp statistics
TCP Global Statistics:
  Connections: 7358 attempted, 4 accepted, 7362 established
        0 dropped, 14718 closed
  Rcvd: 75923 total pkts, 53608 in-sequence pkts, 3120303 
bytes
        0 chksum err pkts, 0 authentication err pkts, 0 bad 
offset pkts
        0 short pkts, 0 duplicate pkts, 0 out of order pkts
  Sent: 82352 total pkts, 44404 data pkts, 657095 bytes
        34 retransmitted pkts, 487 retransmitted bytes
TCP Session Statistics:
  Local addr: 0.0.0.0, Local port: 23
  Remote addr: 0.0.0.0, Remote port: 0
  State: LISTEN Authentication: None
  Rcvd: 4 total pkts, 0 in-sequence pkts, 0 bytes
        0 chksum err pkts, 0 bad offset pkts, 0 short pkts
        0 duplicate pkts, 0 out of order pkts
  Sent: 0 total pkts, 0 data pkts, 0 bytes
        0 retransmitted pkts, 0 retransmitted bytes
  Local addr: 192.168.1.250, Local port: 23
  Remote addr: 10.10.0.77, Remote port: 2170
  State: ESTABLISHED Authentication: None
  Rcvd: 61 total pkts, 34 in-sequence pkts, 41 bytes
        0 chksum err pkts, 0 bad offset pkts, 0 short pkts
        0 duplicate pkts, 0 out of order pkts
  Sent: 64 total pkts, 45 data 
  Local addr: 192.168.1.250, Local port: 23
  Remote addr: 10.10.0.77, Remote port: 2170
  State: ESTABLISHED Authentication: None
  Rcvd: 61 total pkts, 34 in-sequence pkts, 41 bytes
        0 chksum err pkts, 0 bad offset pkts, 0 short pkts
        0 duplicate pkts, 0 out of order pkts
  Sent: 64 total pkts, 45 data pkts, 2304 bytes
        0 retransmitted pkts, 0 retransmitted bytes
 Local addr: 192.168.1.250, Local port: 23
  Remote addr: 192.168.1.139, Remote port: 1038
  State: ESTABLISHED Authentication: None
  Rcvd: 295 total pkts, 159 in-sequence pkts, 299 bytes
        0 chksum err pkts, 0 bad offset pkts, 0 short pkts
        0 duplicate pkts, 0 out of order pkts
  Sent: 281 total pkts, 210 data pkts, 3089 bytes
        0 retransmitted pkts, 0 retransmitted bytes
show ip traffic

Use to display statistics about IP traffic.

You can use the ipTraffic log to show consumable IP traffic to the SRP module; the traffic is filterable per router and IP interface. You can show ICMP, TCP, and UDP traffic with the icmpTraffic, udpTraffic, and tcpTraffic logs.

Field descriptions

IP Statistics Rcvd:

router Id - router ID number

total - number of frames received

local destination - frames with this router as their destination

hdr errors - number of packets containing header errors

addr errors - number of packets containing addressing errors

unkn proto - number of packets received containing unknown protocols

discards - number of discarded packets

IP Statistics Frags:

reassembled - number of reassembled packets

reasm timed out - number of reassembled packets that timed out

reasm req - number of requests for reassembly

reasm fails - number of reassembly failures

frag ok - number of fragmented packets reassembled successfully

frag fail - number of fragmented packets reassembled unsuccessfully

frag creates - number of packets created by fragmentation

IP Statistics Sent:

forwarded - number of packets forwarded

generated - number of packets generated

out disc - number of outbound packets discarded

no routes - number of packets that could not be routed

routing discards - number of packets that could not be routed and were discarded

IP Statistics Route:

routes in table - number of routes in the routing table

ICMP Statistics Rcvd:

total - total number of ICMP packets received

errors - number of error packets received

dst unreach - number of packets received with destination unreachable

time exceed - number of packets received with time-to-live exceeded

param probs - number of packets received with parameter errors

src quench - number of source quench packets received

redirects - number of receive packet redirects

echo req - number of echo request (PING) packets

echo rpy - number of echo replies received

timestamp req - number of requests for a timestamp

timestamp rpy - number of replies of timestamp requests

addr mask req - number of mask requests sent

addr mask rpy - number of mask replies sent

ICMP Statistics Sent:

total - total number of ICMP packets sent

errors - number of error packets sent

dest unreach - number of packets sent with destination unreachable

time excd - number of packets sent with time-to-live exceeded

param prob - number of packets sent with parameter errors

src quench - number of source quench packets sent

redirects - number of send packet redirects

echo req - number of echo request (ping) packets

echo rpy - number of echo replies received

timestamp req - number of request for a timestamp

timestamp rpy - number of replies to timestamp requests

addr mask req - number of address mask requests

addr mask rpy - number of replies to address mask requests

UDP Statistics Rcvd:

total - total number of UDP packets received

checksum - number of checksum error packets received

no port - number of packets received for which no ERX application listener was listening on the destination port

UDP Statistics Sent:

total - total number of UDP packets sent

errors - number of error packets sent

TCP Global Statistics Connections:

attempted - number of outgoing TCP connections attempted

accepted - number of incoming TCP connections accepted

established - number of TCP connections established

dropped - number of TCP connections dropped

closed - number of TCP connections closed

currently established - number of TCP connections currently established

TCP Global Statistics Rcvd:

total pkts - total number of TCP packets received

in-sequence pkts - number of packets received in sequence

bytes - number of bytes received

chksum err pkts - number of checksum error packets received

authentication err pkts - number of authentication error packets received

bad offset pkts - number of packets received with bad offsets

short pkts - number of short packets received

duplicate pkts - number of duplicate packets received

out of order pkts - number of packets received out of order

TCP Global Statistics Sent:

total pkts - total number of TCP packets sent

data pkts - number of data packets sent

bytes - number of bytes sent

retransmitted pkts - number of packets retransmitted

retransmitted bytes - number of retransmitted bytes

OSPF Statistics - provides statistics on OSPF

IGMP Statistics - provides statistics about queries, reports sent or received

ARP Statistics - not supported for this version of the system

Example
host1#show ip traffic
IP statistics: Router Id: 172.31.192.217
  Rcvd:  97833 total, 171059 local destination
  0 hdr errors, 0 addr errors
         167 unkn proto, 0 discards
   Frags: 4 reassembled, 30 reasm timed out, 8 reasm req
         0 reasm fails, 145 frag ok, 0 frag fail
         290 frag creates
 Sent:  15 forwarded, 25144 generated, 0 out disc
         0 no routes,0 routing discards
  Route: 57680 routes in table
    0 timestamp req, 0 timestamp rpy
        0 addr mask req, 0 addr mask rpy
ICMP statistics:
  Rcvd: 561 total, 0 errors, 15 dst unreach
        0 time exceed, 0 param probs, 0 src quench
        0 redirects, 0 echo req, 0 echo rpy
        0 timestamp req, 0 timestamp rpy
        0 addr mask req, 0 addr mask rpy
  Sent: 463866 total, 0 errors, 163676 dest unreach
        0 time excd, 0 param prob, 0 src quench
        20 redirects, 463846 echo req, 0 echo rpy
        0 timestamp req, 0 timestamp rpy
        0 addr mask req, 0 addr mask rpy 
UDP Statistics:
  Rcvd: 93326 total, 0 checksum errors, 90610 no port
  Sent: 0 total, 0 errors
TCP Global Statistics:
  Connections: 7358 attempted, 4 accepted, 7362 established
        0 dropped, 14718 closed
Rcvd: 75889 total pkts, 53591 in-sequence pkts, 3120283 
bytes
        0 chksum err pkts, 0 authentication err pkts, 0 bad 
offset
        0 short pkts, 0 duplicate pkts, 0 out of order pkts
  Sent: 82318 total pkts, 44381 data pkts, 656321 bytes
        34 retransmitted pkts, 487 retransmitted bytes
OSPF Statistics:
IGMP Statistics:
ARP Statistics:
show ip udp statistics

Use to display UDP statistics.

Example
host1#show ip udp statistics
UDP Statistics:
  Rcvd: 39196 total, 0 checksum errors, 29996 no port
  Sent: 210 total, 0 errors
show profile brief

Use to list all profile names.

Field descriptions

profile - profile name

Example
host1#show profile brief
Profile : 
foo
trill
profile4
show route-map

Use to display the configured route maps.

The displayed information includes the instances of each access list such as match and set commands.

Example
host1(config)#route-map westford permit 10
host1(config-route-map)#match community 44
host1(config-route-map)#set local-pref 400
host1(config-route-map)#exit
host1(config)#exit
host1#show route-map westford
route-map 1, permit, sequence 10
  Match clauses:
    match community 44
  Set clauses:
    set local-pref 400

To Display	Command
Access lists	show access-list show ip as-path-access-list
ARP	show arp
General IP information	show ip
IP addresses	show ip address
Community lists	show ip community-list
Prefix for the names of dynamic IP shared interfaces	show ip dynamic-interface-prefix
Routing table	show ip forwarding-table slot
Interfaces	show ip interface
Shared IP interfaces	show ip interface shares
Subscriber interfaces	show ip demux interface
Protocols	show ip protocols
Redistribution policies	show ip redistribute
Routes	show ip route
Interfaces and next hops	show ip route slot
Static routes	show ip static
TCP statistics	show ip tcp statistics
Traffic	show ip traffic
UDP statistics	show ip udp statistics
Profiles	show ip profile
Route maps	show route-map

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