My configuration scripts and output is located at the bottom of this email:
I have two bridges operating in paralle. One will fail over to the other after about 30 seconds (which is longer than I have configured it to take). On the eth0 side is a Cisco Catalyst 5500 that is out of my controll, but the admin group from this "switch" configured STP on the two ports I have my brdiges connected to. On the eth1 side is a 3com 3300 switch that is running a default configuration from the most part. My two questions are: 1)Why does it take so long to fail over? 2)What is this crap in the kernel log of the root bridge (It does not seem to stop (repeats every 1 sec )): Oct 26 13:23:21 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:21 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:22 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:22 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:23 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:23 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:24 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:24 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:25 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:25 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:26 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:26 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:27 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:27 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:28 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:28 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:29 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:29 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:30 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:30 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:31 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:31 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:32 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:32 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:33 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:33 testnt-19 kernel: br0: topology change detected, propagating Oct 26 13:23:34 testnt-19 kernel: br0: received tcn bpdu on port 1(eth0) Oct 26 13:23:34 testnt-19 kernel: br0: topology change detected, propagating Configuration script: root bridge: /sbin/brctl addbr br0 /sbin/brctl setbridgeprio br0 0 /sbin/brctl sethello br0 1 /sbin/brctl setmaxage br0 4 /sbin/brctl setfd br0 4 /sbin/brctl addif br0 eth0 /sbin/brctl addif br0 eth1 /sbin/ip addr add 0.0.0.0 dev eth0 /sbin/ip addr add 0.0.0.0 dev eth1 /sbin/ip link set eth0 up /sbin/ip link set eth1 up /sbin/ip addr add 128.210.62.209/24 broadcast 128.210.62.255 dev br0 /sbin/ip link set br0 up /sbin/ip route add default via 128.210.62.1 non - root bridge: /sbin/brctl addbr br0 /sbin/brctl sethello br0 1 /sbin/brctl setmaxage br0 4 /sbin/brctl setfd br0 4 /sbin/brctl addif br0 eth0 /sbin/brctl addif br0 eth1 /sbin/ip addr add 0.0.0.0 dev eth0 /sbin/ip addr add 0.0.0.0 dev eth1 /sbin/ip link set eth0 up /sbin/ip link set eth1 up /sbin/ip addr add 128.210.62.212/24 broadcast 128.210.62.255 dev br0 /sbin/ip link set br0 up /sbin/brctl setfd br0 2 /sbin/ip route add default via 128.210.62.1 output from 'brctl showstp br0': root: br0 bridge id 0000.00104b27bf4c designated root 0000.00104b27bf4c root port 0 path cost 0 max age 4.00 bridge max age 4.00 hello time 1.00 bridge hello time 1.00 forward delay 4.00 bridge forward delay 4.00 ageing time 300.00 gc interval 4.00 hello timer 0.22 tcn timer 0.00 topology change timer 0.46 gc timer 1.22 flags TOPOLOGY_CHANGE TOPOLOGY_CHANGE_DETECTED eth0 (1) port id 8001 state forwarding designated root 0000.00104b27bf4c path cost 100 designated bridge 0000.00104b27bf4c message age timer 0.00 designated port 8001 forward delay timer 0.00 designated cost 0 hold timer 0.11 flags eth1 (2) port id 8002 state forwarding designated root 0000.00104b27bf4c path cost 100 designated bridge 0000.00104b27bf4c message age timer 0.00 designated port 8002 forward delay timer 0.00 designated cost 0 hold timer 0.10 flags non - root: br0 bridge id 8000.00104b291b83 designated root 0000.00104b27bf4c root port 2 path cost 100 max age 4.00 bridge max age 4.00 hello time 1.00 bridge hello time 1.00 forward delay 4.00 bridge forward delay 2.00 ageing time 300.00 gc interval 4.00 hello timer 0.00 tcn timer 0.00 topology change timer 0.00 gc timer 1.99 flags TOPOLOGY_CHANGE eth0 (1) port id 8001 state blocking designated root 0000.00104b27bf4c path cost 100 designated bridge 8000.00503ea8dc3d message age timer 1.30 designated port 8253 forward delay timer 0.00 designated cost 19 hold timer 0.00 flags eth1 (2) port id 8002 state forwarding designated root 0000.00104b27bf4c path cost 100 designated bridge 0000.00104b27bf4c message age timer 0.57 designated port 8002 forward delay timer 0.00 designated cost 0 hold timer 0.00 -- Mike Cannon Infrastructure Systems Administrator Management Information Purdue University 1061 Freehafer Hall (FREH) West Lafayette, IN 47907-1061 office phone: 765.494.6357 office fax: 765.496.1380 email: [EMAIL PROTECTED] _______________________________________________ Bridge mailing list [EMAIL PROTECTED] http://www.math.leidenuniv.nl/mailman/listinfo/bridge
