Question about SONET
Hi all,
Since I've never seen a working SONET configuration, routers with PoS interfaces, etc, i was wondering, how are routers connected to the SONET ring.
Say, 5 routers at different locations are connected with their PoS interfaces to ADMs and then directly to SONET ring. So how do they appear to each other? As i understand even on this ring topology, routers appear as they are on point to point interfaces. But how does that work? Do the interfaces belong to same shared subnet or is it different subnet for each connection.
Thx for hlp
Since I've never seen a working SONET configuration, routers with PoS interfaces, etc, i was wondering, how are routers connected to the SONET ring.
Say, 5 routers at different locations are connected with their PoS interfaces to ADMs and then directly to SONET ring. So how do they appear to each other? As i understand even on this ring topology, routers appear as they are on point to point interfaces. But how does that work? Do the interfaces belong to same shared subnet or is it different subnet for each connection.
Thx for hlp
Comments
So for 5 routers connected to sonet ring i would need 10 subnets for full mesh? The pos interface gets divided to subinterfaces?
There are several ways to do it. For a point to point circuit we will go with PPP like kryolla pointed out straight to the router. If we want a ring we will drop the SONET onto an ONS/Nortel device and do ethernet handoff to the routers. You then use your dot1q subinterfaces. Its just a transport technology and you can run different L2 encapsulations over it.
POS is point to point just like serial interface you might be able to run FR idk, if you want multi-access then you would do what networker suggested and have an ethernet drop off