Atanu Ghosh wrote: > Hi, > > This behaviour is correct. > > Interfaces of type broadcast and NBMA will elect a DR and BDR if there > are enough neighbours. In this case only the DR and BDR need to form > full adjacencies with all neighbours, the other neighbours will stay in > the 2-Way (TwoWay) state. > Thanks for that info, that makes sense. Before asking my next question: I did read through the rfc, but don't see any reason for links to be stuck in the Exchange state. However, after leaving it overnight, it's still like that. The connection between the routers is an emulated 128kbps sat link (1.5seconds round-trip), and it drops packets occassionally (or more often if sent pkts at rates above 128kbps). This sat acts like an ethernet bridge to other routers connected to it. Maybe there is some retransmit logic that isn't quite right?
If I restart Xorp a few times, it will eventually come up with all in 'full' state (on router 12, which appears to be the master) . I see hellos from the nodes in Exchange state, so it seems they should be able to communicate. [EMAIL PROTECTED] lanforge]# tcpdump -n -i 2.16.2 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on br0, link-type EN10MB (Ethernet), capture size 96 bytes 09:04:32.113138 IP 99.1.1.12 > 224.0.0.5: OSPFv2, Hello, length: 68 09:04:32.493651 IP 99.1.1.11 > 224.0.0.5: OSPFv2, Hello, length: 68 09:04:32.506866 IP 99.1.1.10 > 224.0.0.5: OSPFv2, Hello, length: 68 09:04:32.541082 IP 99.1.1.2 > 224.0.0.5: OSPFv2, Hello, length: 68 09:04:32.911437 IP 99.1.1.6 > 224.0.0.5: OSPFv2, Hello, length: 68 5 packets captured 10 packets received by filter 0 packets dropped by kernel This is for router '2'. [EMAIL PROTECTED] lanforge]# xorpsh Welcome to XORP on lf1016-55 [EMAIL PROTECTED]> show ospf4 neighbor Address Interface State ID Pri Dead 99.1.1.12 2.16.2/2.16.2 Exchange 127.1.0.12 128 38 99.1.1.10 2.16.2/2.16.2 TwoWay 127.1.0.10 128 39 99.1.1.11 2.16.2/2.16.2 Exchange 127.1.0.11 128 39 99.1.1.6 2.16.2/2.16.2 TwoWay 127.1.0.6 128 39 99.1.1.9 2.16.2/2.16.2 TwoWay 127.1.0.9 128 34 99.1.1.3 2.16.2/2.16.2 TwoWay 127.1.0.3 128 37 10.1.2.1 1.2.2/1.2.2 Full 127.1.0.1 128 34 10.2.3.3 2.3.2/2.3.2 Full 127.1.0.3 128 35 10.2.4.4 2.4.2/2.4.2 Full 127.1.0.4 128 32 10.2.5.5 2.5.2/2.5.2 Full 127.1.0.5 128 37 10.2.6.6 2.6.2/2.6.2 Full 127.1.0.6 128 38 10.2.9.9 2.9.2/2.9.2 Full 127.1.0.9 128 33 10.2.10.10 2.10.2/2.10.2 Full 127.1.0.10 128 38 [EMAIL PROTECTED]> quit [EMAIL PROTECTED] lanforge]# Here is the 'show ospf neighbor' for router '12': Welcome to XORP on lf1016-55 [EMAIL PROTECTED]> show ospf4 neighbor Address Interface State ID Pri Dead 99.1.1.3 12.16.12/12.16.12 Full 127.1.0.3 128 34 99.1.1.10 12.16.12/12.16.12 Full 127.1.0.10 128 34 99.1.1.2 12.16.12/12.16.12 Exchange 127.1.0.2 128 34 99.1.1.11 12.16.12/12.16.12 Full 127.1.0.11 128 34 99.1.1.6 12.16.12/12.16.12 Full 127.1.0.6 128 34 99.1.1.9 12.16.12/12.16.12 Full 127.1.0.9 128 31 10.1.12.1 1.12.12/1.12.12 Full 127.1.0.1 128 30 10.9.12.9 9.12.12/9.12.12 Full 127.1.0.9 128 39 10.10.12.10 10.12.12/10.12.12 Full 127.1.0.10 128 33 10.11.12.11 11.12.12/11.12.12 Full 127.1.0.11 128 33 10.12.13.13 12.13.12/12.13.12 Full 127.1.0.13 128 34 10.12.14.14 12.14.12/12.14.12 Full 127.1.0.14 128 33 10.12.15.15 12.15.12/12.15.12 Full 127.1.0.15 128 34 [EMAIL PROTECTED]> Thanks, Ben -- Ben Greear <[EMAIL PROTECTED]> Candela Technologies Inc http://www.candelatech.com _______________________________________________ Xorp-hackers mailing list [email protected] http://mailman.ICSI.Berkeley.EDU/mailman/listinfo/xorp-hackers
