MC-LAG multihoming for native PBB

This section describes a configuration example for BEB C configuration considering the following assumptions:

CLI syntax:

service pbb
        — source-bmac ab-ac-ad-ef-00-00
    port 1/1/1
        — ethernet
            — encap-type qinq
    lag 1
        — port 1/1/1 priority 20
        — lacp active administrative-key 32768
    redundancy
        — multi-chassis
            — peer 10.1.1.3 create
                — source-address 10.1.1.1
                — mc-lag
                    — lag 1 lacp-key 1 system-id 00:00:00:01:01:01 
                    — system-priority 100
                    — source-bmac-lsb use-lacp-key 
    service vpls 100 bvpls
        — sap 2/2/2:100 // bvid 100 
        — mac-notification
            — no shutdown
    
    service vpls 101 bvpls
        — sap 2/2/2:101 // bvid 101
        — mac-notification
            — no shutdown
    // no per BVPLS source-bmac configuration, the chassis one (ab-ac-ad-ef-00-00) is used
    
    service vpls 1000 ivpls
        — backbone-vpls 100
        — sap lag-1:1000 //automatically associates the SAP with ab-ac-ad-ef-00-01 (first 36 bits from BVPLS 100 sbmac+16bit source-bmac-lsb)
    
    service vpls 1001 ivpls
        — backbone-vpls 101
        — sap lag-1:1001 //automatically associates the SAP with ab-ac-ad-ef-00-01(first 36 bits from BVPLS 101 sbmac+16bit source-bmac-lsb)