[31685] in North American Network Operators' Group
Unequal WAN bandwidth-balancing question.
daemon@ATHENA.MIT.EDU (Roland Dobbins)
Sat Oct 7 13:36:09 2000
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Date: Sat, 07 Oct 2000 10:31:22 -0700
From: Roland Dobbins <rdobbins@netmore.net>
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I've a client who have a T1 and want to add a 100mb/sec microwave link
to my POP (Fast Ethernet-to-microwave bridge). They've one router, a
36xx, with both Fast Ethernet and an internal Cisco DSU. The microwave
portion is a breeze, but other aspects are giving me pause.
At my POP, I have a Catalyst 5509 doing MPLS with a 7206 as the MLS-RP.
The 7206 has a serial interface, and already has an external DSU plugged
into it. The 7206/Catalyst combo is part of my OSPF backbone, area 0.
What's the best way to set up load-balancing across these unequal
links? I've done OSPF with unequal paths using multiple routers, same
with EIGRP, but I'm unsure whether OSPF and/or EIGRP will support seeing
two distinct interfaces in the same router or router/switch combo as
being distinct neighbors. With EIGRP, it's possible to load-balance
unequal paths so that no traffic goes through the higher-cost path
unless/until the lower-cost path goes down; does this work if both paths
happen to be attached to the same router?
I have total control of both routers, so I have no problem making the
customer's router a stub area in my OSPF IGP, or in letting their router
participate in EIGRP.
Any advice/comments/pointers would be greatly appreciated.
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Roland Dobbins <rdobbins@netmore.net> // 818.535.5024 voice
