# Monitoring VRF Interfaces

#### Purpose

Display information about the interfaces associated with VRFs.

#### Action

To display information about the interfaces associated with the specified VRFs:

    host1#show ip interface vrf vpn1
    null0 is up, line protocol is up
      Network Protocols: IP
      Internet address is 255.255.255.255/255.255.255.255
      Broadcast address is 255.255.255.255
      Operational MTU = 1500  Administrative MTU = 0
      Operational speed = 100000000  Administrative speed = 0
      Discontinuity Time = 0
      Router advertisement = disabled
      Administrative debounce-time = disabled
      Operational debounce-time    = disabled
      Access routing = disabled
      Multipath mode = hashed

    atm4/0.77 is up, line protocol is up
      Network Protocols: IP
      Internet address is 7.8.7.7/255.255.255.0
      Broadcast address is 255.255.255.255
      Operational MTU = 9180  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 0, Bytes 0
        Unicast Packets 0, Bytes 0
        Multicast 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

To display brief information about the interfaces associated with the VRFs:

    host1#show ip interface vrf vpn1 brief
    Interface              IP-Address     Status Protocol Description
    null0                  255.255.255.255  up         up
    atm4/0.77              7.8.7.7          up         up

#### Meaning

Table 95 lists the show ip interface vrf command output fields.

Table 95: show ip interface vrf Output Fields

Field Name | Field Description
--- | ---
Network Protocols | Type of network protocol configured
Broadcast address | IP address of the subnet
interface | Interface type and interface specifier
interface status | Status of the interface
Protocol Description | Status of the protocol
line protocol | Status of the line protocol
Link up/down trap | Status of SNMP link up/down traps on the interface
Internet address | IP address of the interface
Operational MTU | Actual MTU for the interface
Administrative MTU | Configured MTU for the interface
Operational speed | Actual speed
Administrative speed | Configured speed
Discontinuity Time | Value of sysUpTime the last time the integrity of the interface statistics was compromised
Router advertisement | Whether routes are advertised; enabled or disabled
Administrative debounce-time | Configured debounce behavior, enabled or disabled. 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 | When enabled, an access route is installed to the host on the other end of the interface
Multipath mode | Algorithm used for ECMP: hashing of destination address and source address, or round-robin
In Received Packets, Bytes | Total number of packets and bytes received on an IP interface Unicast—Number of unicast packets and bytes received on an IP interface Multicast—Number of multicast packets and bytes received on an IP interface
In Policed Packets, Bytes | Number of packets and bytes discarded on a receive IP interface because of token bucket limiting
In Error Packets | Number of packets discarded on a receive IP interface because of IP header errors
In Invalid Source Address Packets | Number of packets discarded on a receive IP interface because of invalid IP source address (sa-validate enabled)
Out Forwarded Packets, Bytes | Number of packets and bytes forwarded out an IP interface Unicast—Number of unicast packets and bytes forwarded out an IP interface Multicast—Number of multicast packets and bytes forwarded out an IP interface
Out Scheduler Drops Committed Packets, Bytes | Number of committed packets and bytes dropped because of out queue threshold limit
Out Scheduler Drops Conformed Packets, Bytes | Number of conformed packets and bytes dropped because of out queue threshold limit
Out Scheduler Drops Exceeded Packets, Bytes | Number of exceeded packets and bytes dropped because of out queue threshold limit
Out Policed Packets, Bytes | Number of packets and bytes discarded on a forwarding IP interface because of token bucket limiting

#### Related Documentation

- show ip interface vrf