Dual Homing layer 2

[Amouna]

Hello,
Please currently i'm looking for implementing a solution dual homing for the uplinks between the optical line networks (OLT) and two equipements Metro ethernet (ME).
Between OLT and ME, it's a layer 2 so we use only Vlans to send the traffic of differents service, we don't use any address IP.
In the network IP of ME, we use the protocols OSPF, BGP, MPLS.
Please, how to configure the solution dual homing between the routers ME and OLT? which protocols can i need  to ensure the redunduncy, to switch the traffic on the backup link in the case of the failure of the master link and to detect the failure of the link or the node?
Thank you in advance.

[andre.ortega]

Probably you will have to let STP take care of it (I'm supposing that ME and your OLT doesn't allow stacking or any kind of virtualization).
If your switches and OLTs would support stack, then you could configure LACP.

[Amouna]

 Thank you for your answer.

But please could you help me by giving me an example of config about STP in the case of dual homing between OLT and two different equipements ME?

In the OLT, we use a VLAN for ADSL,a VLAN for voice and VLAN for IPTV.

[andre.ortega]

Is there a connection between MEs?

If yes, you would have two connections from OLT (to ME1 and ME2), with trunk configured. Also a trunk between MEs.

STP takes care of it automaticaly (only one connection will be active at time).

Important: configure the same type of STP on MEs and OLT, and make ME1 root bridge, with ME2 backup root bridge.

[Amouna]

Thanks for your help Andre . I will try this config and if i find some problems, i'll post it.

[andre.ortega]

Ok... I can't be more specific because I don't know your topology and your OLT either.

If it is the case, mark the answer as helpful.