# Monitoring Virtual Routers

Use the show virtual-router, the show configuration virtual router , and show aaa domain-map commands to display virtual router and user-domain-to-virtual-router mapping information. Use the show ip forwarding table command to display information about memory usage by virtual routers.

show aaa domain-map

- Use to display the mapping between user domains and virtual routers.
- The following keywords have significance when used as user domains:
  - none—All client requests with no user domain name are associated with the virtual router mapped to the none entry
  - default—All client requests with a domain present that has no map are associated with the virtual router mapped to the default entry
- Example

      host1#show aaa domain-map
      Domain: boston; virtual-router: default

      Tunnel Tunnel Tunnel Tunnel Tunnel  Tunnel   Tunnel  Tunnel
       Tag    Peer  Source  Type  Medium Password   Id    Hostname
      ------ ------ ------ ------ ------ --------  ------ --------
      31     <null> <null> l2tp   ipv4   <null>    <null> <null>

               Tunnel
      Tunnel   Server     Tunnel
       Tag      Name    Preference
      ------   ------   ----------
      31       <null>   2000

- See show aaa domain-map.

show configuration

- Use to display configuration information for the virtual routers configured on your router.
- You can create a configuration script from the output by saving it as a file with the .scr extension.
- You can exclude information about a particular type of interface.
- 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 Command-Line Interface, for details.
- Example

      host1#show configuration virtual-router default
      virtual-router default
      ip domain-lookup
      ip name-server 10.2.0.3
      ip domain-name "junipercom.com"
      !
      host f 10.10.0.129 ftp anonymous null
      interface null 0
      !
      interface fastEthernet 0/0
       ip address 192.168.1.155 255.255.255.0
      !
      ip route 0.0.0.0 0.0.0.0 192.168.1.1
      no ip multicast-routing
      !
      mpls rsvp profile default
      mpls ldp profile default
      !
      rtr 1
       type echo protocol ipIcmpEcho 10.5.0.200 source fastEthernet0/0
       frequency 1
       samples-of-history-kept 5
       timeout 10000
      !

- See show configuration.

show ip forwarding-table slot

- Use to display the memory used by each VR configured on a line module and free memory available on the line module.
- Field descriptions
  - Free Memory—Amount of memory free on the line module, in kilobytes
  - Virtual Router—Name of the virtual routers configured on the line module
  - Memory (KB)—Amount of memory consumed by the VR, in kilobytes
  - Load Errors—Counts errors made while loading the routing table on the line module
  - Status—Indicates whether the routing table for the VR is valid
- Example

      host1#show ip forwarding-table slot 9
      Free Memory = 14,328KB
        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
      -----------------------------------------------------------

- See show ip forwarding-table slot.

show virtual-router

- Use to display the virtual routers and VRFs configured on your router.
- Use the summary keyword to display only the total number of virtual routers and the total number of VRF instances.
- Use the detail keyword to display the status of the routing protocols configured for each virtual router.
- Use the summary keyword with the detail keyword to display the number of VRF instances for each virtual router.
- Use the output filtering feature of the show command to include or exclude lines of output based on a text string you specify. See Command-Line Interface, for details.
- Example 1

      host1#show virtual-router
      Virtual Router : default
      Virtual Router : vr1
                       VRF : eastern
                       VRF : western
                       VRF : northern
                       VRF : southern
      Virtual Router : vr2
                       VRF : eastern
                       VRF : western
                       VRF : northern
                       VRF : southern
      Virtual Router : vr3
                       VRF : eastern
                       VRF : western
                       VRF : northern
                       VRF : southern

- Example 2

      host1#show virtual-router detail
      Virtual Router : default
                              Ip:     Present
                              Ipv6:   Not Present
                              Mgtm:   Not Present
                              Mgtmv6: Not Present
                              Bgp:    Not Present
                              Isis:   Present
                              Ospf:   Not Present
                              Pim:    Not Present
                              Rip:    Not Present
                              Igmp:   Not Present
                              Mld:    Not Present
                              Dvmrp:  Not Present
      Virtual Router : vr1
                              Ip:     Present
                              Ipv6:   Not Present
                              Mgtm:   Present
                              Mgtmv6: Not Present
                              Bgp:    Not Present
                              Isis:   Present
                              Ospf:   Present
                              Pim:    Present
                              Rip:    Not Present
                              Igmp:   Not Present
                              Mld:    Not Present
                              Dvmrp:  Not Present

- Example 3

      host1#show virual-router summary detail
      Virtual Router default                          VRF Count: 0
      Virtual Router vr1                              VRF Count: 4
      Virtual Router vr2                              VRF Count: 4
      Virtual Router vr3                              VRF Count: 4

      Total VR Count: 4
              VRs with    VRFs Count: 3
              VRs without VRFs Count: 1
      Total VRF Count: 12
      Total Count    : 16

- See show virtual-router.