MC LAG ex4600 - Setup problems

Hi

Im having issues setting up MC LAG on a pair of ex4600 with the recommended release code D40.

I have the following topology:

link xe-0/0/23 is used exclusively for the ICCP traffic

and ae0 is the ICL for the data plane.

from ex4600 PE1 on left side

[ multi-chassis ]
multi-chassis-protection 10.1.1.2 {
    interface ae0;
}

[interfaces irb ]
arp-l2-validate;
unit 3999 {
    family inet {
        address 10.1.1.1/30;
    }
}

[interfaces ae0]
description "EtherChannel between ex4600 ICL";
mtu 9216;
aggregated-ether-options {
    link-speed 10g;
}
unit 0 {
    family ethernet-switching {
        interface-mode trunk;
        vlan {
            members [ 10-16 18 20 30 40 50-51 55 60-65 70 80-83 90-91 100 111 114 117 120 123 150-151 279 350 1000 ];
        }
    }
}

[ interfaces xe-0/0/23 ]
description "ICCP Link to ex4600 xe-0/0/23";
mtu 9216;
unit 0 {
    family ethernet-switching {
        interface-mode trunk;
        vlan {
            members ICCP-Vlan;
        }
    }
}

I originally had the multi-chassis protection link as xe-0/0/23.

When I connect the client with both links, everything looks ok but I am getting traffic looping.

and errors like:

Jan 17 00:21:19  rtaggtmp01 l2ald[1735]: L2ALD_FREE_MAC_FAILED: ERROR:FwdE:0x9bffd00 EFlag:0x1802101f RGID:0001  AEID:0006  SERVICE-ID:01 UNIT:00 PEERID:16843018MAC: 08:5b:0e:72:4d:ae moved: already in RMAC List
Jan 17 00:21:21  rtaggtmp01 l2ald[1735]: L2ALD_FREE_MAC_FAILED: ERROR:FwdE:0x9c22000 EFlag:0x1802101f RGID:0001  AEID:0006  SERVICE-ID:01 UNIT:00 PEERID:16843018MAC: 08:5b:0e:78:23:bc moved: already in RMAC List
Jan 17 00:21:40  rtaggtmp01 l2ald[1735]: L2ALD_FREE_MAC_FAILED: ERROR:FwdE:0x9c1c100 EFlag:0x1802101f RGID:0001  AEID:0006  SERVICE-ID:01 UNIT:00 PEERID:16843018MAC: 08:5b:0e:72:4d:ae moved: already in RMAC List

Reading docs last night it states that the protection link should be the ICL, Which I understand to be the ae0 interface.

thus indicated in the code above.

I shutdown the interface on second ex4600 towards the client

then enabled mc-ae on the ae6 on primary ex4600.

the first ex4600 complains that protection link is not configured.

so questions are:

1.  Which link should be the multi-chassis protection link, the ICCP link xe-0/0/23 or the ICL ae0?

2.  As this client is not ONLY attached to the ex4600 pair and there is RSTP running in the network, what if anything needs to be done?  I saw some comments about having to set the bridge ID to be the same?

3.  Is anything else wrong with the config?

thanks