VSM-CCA-XP

The VSM-CCA-XP MDA offers a hybrid mode for simplified provisioning and a high capacity VSM when inserted on IOM cards. The complete forwarding path bandwidth (in this case 25 Gb/s) is available, allowing single conversations up to 25 Gb/s on a single MDA.

A VSM-CCA-XP has two ports, port x/x/1 and port x/x/2, which are internally connected. Configuration is very similar to a physical loop-back port using Ethernet hybrid ports with dot1Q encapsulation. The use of the Ethernet VLAN tag connects the SAPs.

The following constraints apply to the configuration of the VSM-CCA-XP:

The following is an example configuration for an MDA provisioned as a VSM-CCA-XP MDA.

*A:PE-1>config>card# info
----------------------------------------------
        card-type iom3-xp-c
        mda 1
            mda-type m10-1gb-xp-sfp
            no shutdown
        exit
        mda 2
            mda-type vsm-cca-xp
            no shutdown
        exit
        no shutdown
----------------------------------------------
*A:PE-1>config>card# exit all
*A:PE-1# show mda
===============================================================================
MDA Summary
===============================================================================
Slot  Mda   Provisioned Type                            Admin     Operational
                Equipped Type (if different)            State     State
-------------------------------------------------------------------------------
1     1     m10-1gb-xp-sfp                              up        up
      2     vsm-cca-xp                                  up        up
===============================================================================
*A:PE-1#

The following is an example VSM-CCM-XP configuration for ports:

    port 1/2/1
        ethernet
        exit
        no shutdown
    exit
    port 1/2/2
        ethernet
        exit
        no shutdown
    exit

Port and Ethernet QoS parameters may be configured as they are for a physical port. The Ethernet on VSM-CCA-XP has a reduced set of features. For example, dot1Q is the only supported encapsulation. LACP cannot be configured on LAGs using the port.

The ports may be used directly by service SAP in the case of a single loop back. If resiliency is required, or more capacity is needed, a LAG can be configured.

The following is an example configuration for LAG on a single VSM-CCA-XP MDA:

    lag 1
        mode hybrid
        encap-type dot1q
        port 1/2/1 // VSM-CCA-XP
        no shutdown
    exit
    lag 2
        mode hybrid
        encap-type dot1q
        port 1/2/2 // VSM-CCA-XP
        no shutdown
    exit

The following is an example for a VPLS service equivalent using the LAG port:

  vpls 121 customer 1 create
     stp
         shutdown
     exit
     sap lag-1:1001 create // Connect using VLAN Tag 1001
     exit
     no shutdown
     ...
 exit

The following is an example for an IES service equivalent to the configuration:

 ies 122 customer 1 create
     interface "Loopback" create
         address 10.1.1.1/24
         sap lag-2:1001 create
             ingress
                qos 3
             exit
             egress
                 qos 1010
             exit
         exit
     exit
     ...
     no shutdown
exit