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# Creating Virtual Routers for the CMTS Device (SRC CLI)

You need to add a virtual router object called default to the CMTS device.

Use the following configuration statements to add a virtual router:

`

shared network device name virtual-router name {
  sae-connection [ sae-connection ...];
  snmp-read-community snmp-read-community ;
  snmp-write-community snmp-write-community ;
  scope [ scope ...];
  local-address-pools local-address-pools ;
  static-address-pools static-address-pools ;
  tracking-plug-in [ tracking-plug-in ...];
}

`

To add a virtual router:

1. From configuration mode, access the configuration statements for virtual routers. You must specify the name of a device with lowercase characters. In this sample procedure, pcmm_dtr is the name of the router and default is the name of the virtual router.
   `
   user@host# edit shared network device pcmm_dtr virtual-router default
   `
2. Specify the addresses of SAEs that can manage this router. This step is required for the SAE to work with the router.
   `
   [edit shared network device pcmm_dtr virtual-router default]
   user@host# set sae-connection [ sae-connection ...]
   `

   To specify the active SAE and the redundant SAE, enter an exclamation point (!) after the hostname or IP address of the connected SAE. For example:

   `
   [edit shared network device pcmm_dtr virtual-router default]
   user@host# set sae-connection [sae1! sae2!]
   `
3. (Optional) Specify an SNMP community name for SNMP read-only operations for this VR.
   `
   [edit shared network device pcmm_dtr virtual-router default]
   user@host# set snmp-read-community snmp-read-community
   `
4. (Optional) Specify an SNMP community name for SNMP write operations for this virtual router.
   `
   [edit shared network device pcmm_dtr virtual-router default]
   user@host# set snmp-write-community snmp-write-community
   `
5. (Optional) Specify service scopes assigned to this virtual router.

   See Configuring Service Scopes (SRC CLI).

   `
   [edit shared network device pcmm_dtr virtual-router default]
   user@host# set scope [ scope ...]
   `
6. (Optional) Specify the list of IP address pools that a CMTS virtual router currently manages and stores.

   If you are using assigned IP subscribers along with the network information collector (NIC), you need to configure either a local or static address pool so that the NIC can resolve the IP-to-SAE mapping.

   `
   [edit shared network device pcmm_dtr virtual-router default]
   user@host# set local-address-pools local-address-pools
   `
7. (Optional) Specify the list of IP address pools that a CMTS VR manages but does not store.

   If you are using assigned IP subscribers along with the NIC, you need to configure either a local or static address pool so that the NIC can resolve the IP-to-SAE mapping.

   `
   [edit shared network device pcmm_dtr virtual-router default]
   user@host# set static-address-pools static-address-pools
   `
8. (Optional) Specify the plug-ins that track interfaces that the SAE manages on this virtual router.
   `
   [edit shared network device pcmm_dtr virtual-router default]
   user@host# tracking-plug-in [ tracking-plug-in ...]
   `
9. (Optional) Verify your configuration.

       [edit shared network device pcmm_dtr virtual-router default]
       user@host# show
       sae-connection [ 10.14.39.2 10.10.5.30 ];
       snmp-read-community ********;
       snmp-write-community ********;
       scope POP-Westford;
       local-address-pools "10.25.8.0 10.25.20.255";
       tracking-plug-in rksPlugin;

#### Related Topics

- Adding Objects for CMTS Devices (SRC CLI)
- Configuring CMTS-Specific RKS Plug-Ins (SRC CLI)
- Associating Security Names with a Community

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