Date: Thu, 16 Dec 2010 16:17:52 -0800 From: Rudy <crapsh@monkeybrains.net> To: freebsd-net@freebsd.org Subject: unicast flooding on bridge0 and odd DUP! ICMP packets Message-ID: <4D0AAC30.1090202@monkeybrains.net>
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I am having issues when I add 3 vlans (all off of em1) to bridge0. [1] when I ping ips on 2 of the 3 vlans, I get a redirect from localhost and then a dup # ifconfig bridge0 10.7.0.1/16 # ping 10.7.1.31 (which lives on vlan714) PING 10.7.1.31 (10.7.1.31): 56 data bytes 36 bytes from localhost (127.0.0.1): Redirect Host(New addr: 10.7.1.31) Vr HL TOS Len ID Flg off TTL Pro cks Src Dst 4 5 00 0054 af97 0 0000 3f 01 b6e4 10.7.0.1 10.7.1.31 64 bytes from 10.7.1.31: icmp_seq=0 ttl=64 time=286.316 ms 64 bytes from 10.7.1.31: icmp_seq=0 ttl=64 time=286.350 ms (DUP!) # ping 10.7.1.5 (which lives on vlan7) PING 10.7.1.5 (10.7.1.5): 56 data bytes 64 bytes from 10.7.1.5: icmp_seq=0 ttl=64 time=5.160 ms 64 bytes from 10.7.1.5: icmp_seq=1 ttl=64 time=3.392 ms 64 bytes from 10.7.1.5: icmp_seq=2 ttl=64 time=6.250 ms So, what would possible cause my localhost to spit out the redirect? (the route is the same for both IPs: arana-zebra> sh ip route 10.7.1.5 Routing entry for 10.7.0.0/16 Known via "connected", distance 0, metric 1, best * directly connected, bridge0 arana-zebra> sh ip route 10.7.1.31 Routing entry for 10.7.0.0/16 Known via "connected", distance 0, metric 1, best * directly connected, bridge0 [2] When putting live traffic on the links, I saw a lot of unicast traffic going over the wire. I had 'PRIVATE' set on all bridge members. Is anyone running a bridge with 50 vlan members? Do you see any unicast flooding? (I added "switchport block unicast" to the vlan egree points on the switches -- going to wifi antennas.) My goal: set up dhcpd router with a big pool -- spanning all the vlans -- but keeping the vlan traffic separate (hence the PRIVATE on the bridge members). Rudy
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