Friday, March 26, 2010

Monitoring Virtual Routers

Use the show 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       l2tp   ipv4        

             Tunnel
    Tunnel   Server     Tunnel
     Tag      Name    Preference
    ------   ------   ----------
    31          2000

show configuration virtual-router

  • 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 you specify. See Chapter 2, 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
     cr-ldp
    !
    rtr 1
     type echo protocol ipIcmpEcho 10.5.0.200 source fastEthernet0/0
     frequency 1
     samples-of-history-kept 5
     timeout 10000
    !

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
    -----------------------------------------------------------

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.
  • You can use the output filtering feature of the show command to include or exclude lines of output based on a text string you specify. See Chapter 2, 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