[nsp] relevance of ibgp in private mobile transit backbones?
padma krishnaswamy
kri234@hotmail.com
Sun, 08 Sep 2002 18:19:18 +0000
<html><div style='background-color:'><DIV>Hi-</DIV>
<DIV>a question that i hope is not too off topic for this list.</DIV>
<DIV>The convention (to transmit BGP acquired routes cross network) is to use IBGP in transit nets. IBGP is chosen to spare the IGP-related complications caused by needing to carry large numbers of BGP routes if an IGP were used to do so , and not IBGP. </DIV>
<DIV>If the scenario is one where </DIV>
<DIV>1) the number of BGP routes at each border gateway may be much lower than for the commercial internet</DIV>
<DIV>2)the transit network consists of relatively mobile nodes -thus making tcp meshes rather tricky to maintain-</DIV>
<DIV> </DIV>
<DIV>what scales (total no of routes across all border routers) is it worth considering an IGP such as OSPF to carry BGP routes across the transit net?</DIV>
<DIV> </DIV>
<DIV>thanks </DIV>
<DIV><BR>Padma Krishnaswamy</DIV>
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