I'm weighing the pros/cons of using MLPPP vs dual BGP links over 2
synchronous serial lines attached to an NM-4T in a Cisco 3640. The serial
lines have different bandwidths - one serial line will be running at 8
Mbps and the other will be 4 Mbps. Both serial lines terminate on the
same router at the remote end. The routers will use BGP to pass routes
(BGP on the multilink interface if using MLPPP).
The MLPPP method seems simpler as there would be only a single BGP peering
link. However, docs suggest MLPPP adds quite a bit of overhead. How much
extra overhead would MLPPP add to the 3640 cpu load?
Will multipath BGP work even though there is no MPLS-VPN or VRF
configured on either router?
Will a single traffic flow be able to utilize the full aggregate 12 Mbps
of bandwidth if using multipath BGP?
Which method would recover more quickly or tolerate the loss of one of the
links?
Antonio Querubin
808-545-5282 x3003
e-mail/xmpp: t...@lava.net
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