Monitoring IP Shared Interfaces

Purpose

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.

Action

To display a brief summary of status and configuration information for all IP interfaces and their associated shared IP interfaces:

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

To display a brief summary of status and configuration information for the specified IP interface and its associated shared IP interfaces:

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

To display all status and configuration information for the specified IP interface and its associated shared IP interfaces:

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

To display all status and configuration information for a specific shared IP interface:

host1#show ip interface shares 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

Meaning

Table 19 lists the show ip interface shares command output fields.

Table 19: show ip interface shares Output Fields

Field Name	Field Description
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
Network Protocols	Network protocols configured on this interface
Layer 2 interface	Layer 2 interface to which the shared IP interface is associated
Unnumbered Interface	Specifier for the unnumbered 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
Administrative debounce-time	Configured debounce behavior, enabled or disabled. If enabled, indicates time in milliseconds that the router waits before generating an up or down event in response to a state change in the interface. If the state changes back before the debounce timer expires, no state change is reported.
Operational debounce-time	Current debounce behavior, enabled or disabled. If enabled, indicates time in milliseconds that the router waits before generating an up or down event in response to a state change in the interface. If the state changes back before the debounce timer expires, no state change is 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 for any of the following reasons: exceeding the token bucket limit, exceeding the rate limit, a drop action in a policy, discarded MAC validation packets, a destination address lookup failure, or when the destination address is an IP interface that has a route configured to the null 0 interface.
In Error Packets	Number of packets received with errors
In Invalid Source Address Packets	Packets received with invalid source address (for example, spoofed packets)
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

Monitoring IP Shared Interfaces

Purpose

Action

Meaning

Related Documentation