08-25-2008 07:47 AM - edited 03-03-2019 11:15 PM
Are there any special considerations when designing a WAN with OSPF that includes nodes that have RTT's around 200-300ms? Will that amount of delay cause issues?
Thanks,
--Brandon
08-25-2008 08:18 AM
Thus the RTT cause by congestion, unstable link, or distance?
The first two will have bad effect in OSPF.
I don't see any problem if the RTT is cause by the distance. However, large RTT may cause false timeouts and transmissions.
http://ieeexplore.ieee.org/Xplore/login.jsp?url=/iel5/8594/27233/01210163.pdf?arnumber=1210163
08-25-2008 08:58 AM
In this case the high RTT is due to distance, New York - Hong Kong. I'm designing a new network with an OSPF core across a VPLS mesh network. I'll have sites in London, Hong Kong, and New York. Do you think this will cause any issues?
08-25-2008 06:37 PM
I usually use BGP for long distance, and use OSPF for short distance.
08-26-2008 05:57 AM
Since I have no working knowledge of BGP, I'm very very hesitant to try and implement that. I'm just curious if 200-300ms of latency between the two most distant nodes will cause any problems with OSPF.
Thanks again,
--Brandon
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