[Bridge] Bridge Woes...

[Jothis T.V]

Hi Chris,

Just wanted to ensure some basic points here.

1. Can the laptop ping the router OR any other machine in the subnet
128.171.103.0/24?
2. Also, hope that you have set the gateway of the laptop as 128.171.103.1.

regards,
Jothis


On 10/5/06, Chris U <chris.uyehara at gmail.com> wrote:
>
> Hi List,
>
> I have setup a bridge labeled br0. br0 has an ip address assigned to it.
> My network looks something similar to this...
>
> |--------------------|         |--------------------|
> |------------------|
> |      laptop        |         |      bridge        |               |
> router       | | 128.171.103.10/24  |->(eth1) | 128.171.103.11/24
> |(eth0)  ---->  | 128.171.103.1/24 | | statically assignd |         |
> statically assignd |               | tested / working |
> |--------------------|         |--------------------|
> |------------------|
>
> Now for the PROBLEM! The bridge can access IP's outside of the subnet via
> eth0 of the bridge, ie - pinging 128.171.1.1, 128.171.3.13, 64.233.167.99.
> The laptop cannot ping the previously listed IPs. The only thing the lapt=
op
> can ping is 128.171.103.11. It's very odd... I tried running tcpdump on
> the bridge. From the bridge I could see the laptop pinging the bridge but=
 I
> couldn't see the laptop pinging any other IPs. So basically I have a brid=
ge
> that's not really working but the bridge utils show that its working... a=
ny
> help would be greatly appreciated!
>
> (The laptop works when taken off the bridge and connected to the router,
> the iptables default policy is ACCEPT and the rules are FLUSHED.)
>
> Thanks for taking time to read this!
>
> ###brctl show br0
> bridge name     bridge id               STP enabled     interfaces
> br0             8000.001372fc8436       no              eth0
>                                                         eth1
>
> ###brctl showstp br0
> br0
>  bridge id              8000.001372fc8436
>  designated root        8000.001372fc8436
>  root port                 0                    path cost
> 0
>  max age                  19.99                 bridge max age
> 19.99
>  hello time                1.99                 bridge hello time
> 1.99
>  forward delay            14.99                 bridge forward delay
> 14.99
>  ageing time             299.95
>  hello timer               0.03                 tcn timer
> 0.00
>  topology change timer     0.00                 gc timer
> 7.97
>  flags
>
>
> eth0 (1)
>  port id                8001                    state
> forwarding
>  designated root        8000.001372fc8436       path cost
> 100
>  designated bridge      8000.001372fc8436       message age timer
> 0.00
>  designated port        8001                    forward delay timer
> 0.00
>  designated cost           0                    hold timer
> 0.00
>  flags
>
> eth1 (2)
>  port id                8002                    state
> forwarding
>  designated root        8000.001372fc8436       path cost
> 100
>  designated bridge      8000.001372fc8436       message age timer
> 0.00
>  designated port        8002                    forward delay timer
> 0.00
>  designated cost           0                    hold timer
> 0.00
>  flags
>
>
>
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>
>
>
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