unicast flooding on bridge0 and odd DUP! ICMP packets

[Rudy]

How much of the vlan/bridge stuff is off-loaded to the ethernet card? 
Would chaning out my em0 for an igb0 affect uni-cast flooding in any way?

Rudy


On 12/16/2010 04:17 PM, Rudy wrote:
>
> 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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