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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Where is the edge of the Internet?
here is the scenario u have a bgp A ---ospf-B - bgpC router setup what will u do on ospf -B ? coz transit traffic can flow thru it... "careful selection"... :o) well that way u can fill every hole .. no end to it... and it generates good jobs :o) but what i was trying to say to Valdis....was that u cant just "blindly" drop packets in the core whose source doesnt have a route...for eg ospfB is a problem in the above ----- Original Message ----- From: Martin <[email protected]> To: <[email protected]> Sent: Wednesday, November 06, 2002 11:32 AM Subject: Re: Where is the edge of the Internet? $author = "alok" ; > > you can't if its a valid internet address...can you? depends on what you mean by "valid". - does "valid" = any 32 bit dotted quad? - does "valid" = any IP not in 1918 space? - does "valid" = any IP that the routing table has an entry for? - does "valid" = packets from this IP came in the interface i would send packets out of to reach that IP? > but that isnt the case here is it...some of ur internal core > routers may not have every router running bgp, so what do u do for such > scenarios..u default route it to a bgp router....im missing your point..... "loose" RPF on routers without full tables makes little sense. you choose where to filter carefully and avoid the pitfalls you keep raising... marty -- "No GUI for you! Use lynx!!!, Come back, One year!" /avant
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