Configuring G.8031 protected Ethernet tunnels

Ethernet tunnel configuration can include at most two paths. Other considerations include:

• A path contains one member port and one control-tag (backbone VLAN ID/BVID)

• If the operator wants to replace an existing member port or a control-tag, the whole path needs to be shutdown first. The alternate path is activated as a result keeping the traffic interruption to a minimum. Then the whole path must be deleted and re-created. To replace an existing member port or control tag, the whole path needs to be shutdown first. The alternate path is activated as a result keeping traffic interruption to a minimum. Then the whole path must be deleted, the alternate path precedence modified to primary before re-creating the new path.

• The Ethernet tunnel inherits the configuration from the first member port. The following port-level configuration needs to be the same between member ports of an Ethernet tunnel:

  • config>port>ethernet>access>{ingress|egress}>queue-group

  • config>port>ethernet>egress-scheduler-policy

  • config>port>access>egress>pool

  • config>port>ethernet>dot1q-etype

  • config>port>ethernet>qinq-etype

  • config>port>ethernet>pbb-etype

  • config>port>ethernet> mtu

• The operator can update these port parameters only if the port is the sole member of an Ethernet tunnel. This means that in the example below, the operator needs to remove port 1/1/4 and port 1/1/5 before being allowed to modify 1/1/1 for the above parameters.

eth-tunnel 1
        — path 1
            — member 1/1/1
        — path 2
            — member 1/1/4
    — eth-tunnel 2
        — path 1
            — member 1/1/1
    —      path 2
        —     member 1/1/5

The following example shows eth-tunnel configuration output:

    — port 1/1/1
        — ethernet
            — encap-type dot1q
    — port 2/2/2
        — ethernet
            — encap-type dot1q
        — 
    — config eth-tunnel 1
        — path 1
            — member 1/1/1
            — control-tag 100
            — precedence primary
            — eth-cfm
                — mep 51 domain 1 association 1
                — ccm-enable
                — low-priority-defect allDef
                — mac-address 00:AE:AE:AE:AE:AE
                — control-mep
                — no shutdown
        — no shutdown
        — path 2
            — member 2/2/2 
            — control-tag 200
    — eth-cfm 
        — mep
            — mep 52 domain 1 association 2 direction down
            — ccm-enable
            — low-priority-defect allDef
            — mac-address 00:BE:BE:BE:BE:BE
            — control-mep
            — no shutdown
    — no shutdown