[c-nsp] Improve Convergence Times
Greene, Patrick
PatrickGreene at spherion.com
Thu Jan 11 08:58:28 EST 2007
Thanks in advance for you advice.
I have 2 Cisco 7600's each with an OC-3 to a carrier's MPLS cloud. I am
running BGP as my EGP and OSPF as my IGP. I redistribute my BGP into
OSPF. I only have about 10 routers in my OSPF backbone area. I have
set it up to run all traffic through one OC-3 as a primary and the other
as failover using MED and Local-Pref. On the carrier side, BGP
Fast-Failover is configured in the event the carrier has an outage. My
problem is, when I fail my primary OC-3 interface, it takes 10-12
seconds for OSPF to pick up the failure and hence traffic is being
dropped out to the WAN. What can I do to improve this convergence?
Thank You,
Patrick
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