Two 3825s won't talk to each other
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Posted by BigDaveKelly@googlemail.com on July 10, 2008, 6:23 am
Please log in for more thread options other. Interface GigabitEthernet0/0/0 (A HWIC-1GE-SFP with a 1000Base-T SFP) on each router is connected to the other with a tested straight cable - changing it to crossover makes no difference. router1: interface GigabitEthernet0/0/0 description Connection to router2 ip address 10.0.0.1 255.255.255.252 negotiation auto router2: interface GigabitEthernet0/0/0 description Connection to router1 ip address 10.0.0.2 255.255.255.252 negotiation auto And a bit of output showing the line is up: router1#show ip interface brief | include 0/0/0 GigabitEthernet0/0/0 10.0.0.1 YES manual up down router2#show ip interface brief | include 0/0/0 GigabitEthernet0/0/0 10.0.0.2 YES manual up down Now the problem - neither router can ping each other, and even though I believe these should show up as connected routes, they do not: router2#show ip route | include 10.0.0 router2# router1#show ip route | include 10.0.0 router1# Can anyone let me know if there's anything else I can provide that will help, or ideally tell me what I'm doing wrong? | |||||||||||||||||||||||||||||||||||||
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Posted by Trendkill on July 10, 2008, 7:32 am
Please log in for more thread options First, I think you need a crossover (unless its a switch module in the router). Second, have you tried hard-setting the speed/duplex? | |||||||||||||||||||||||||||||||||||||
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Posted by BigDaveKelly@googlemail.com on July 10, 2008, 9:01 am
Please log in for more thread options > > We have two 3825s, and I'm struggling to get them to talk to each
> > other. Interface GigabitEthernet0/0/0 (A HWIC-1GE-SFP with a > > 1000Base-T SFP) on each router is connected to the other with a > > tested straight cable - changing it to crossover makes no > > difference. > First, I think you need a crossover (unless its a switch module in the
> router). Second, have you tried hard-setting the speed/duplex? As above, I've tried both a crossover and a straight cable. The interfaces should be able to do Auto MDIX so work with a straight cable. The speed/duplex can't be hard set on the HWIC-1GE-SFP - both are set to negotiation auto by requirement. | |||||||||||||||||||||||||||||||||||||
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Posted by Trendkill on July 10, 2008, 9:09 am
Please log in for more thread options On Jul 10, 9:01=A0am, "BigDaveKe...@googlemail.com"
> > > We have two 3825s, and I'm struggling to get them to talk to each
> > > other. =A0Interface GigabitEthernet0/0/0 (A HWIC-1GE-SFP with a > > > 1000Base-T SFP) on each router is connected to the other with a > > > tested straight cable - changing it to crossover makes no > > > difference. > > First, I think you need a crossover (unless its a switch module in the
> > router). =A0Second, have you tried hard-setting the speed/duplex? >
> As above, I've tried both a crossover and a straight cable. =A0The > interfaces should be able to do Auto MDIX so work with a straight > cable. > > The speed/duplex can't be hard set on the HWIC-1GE-SFP - both are set > to negotiation auto by requirement. add 'media-type rj45' to the interface configs. | |||||||||||||||||||||||||||||||||||||
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Posted by BigDaveKelly@googlemail.com on July 10, 2008, 9:23 am
Please log in for more thread options > > The speed/duplex can't be hard set on the HWIC-1GE-SFP - both are set
> > to negotiation auto by requirement. > add 'media-type rj45' to the interface configs.
I'm afraid not; that's another command that's not available on this interface. Thanks for your suggestions! Keep 'em coming! | |||||||||||||||||||||||||||||||||||||
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> other. =A0Interface GigabitEthernet0/0/0 (A HWIC-1GE-SFP with a
> 1000Base-T SFP) on each router is connected to the other with a
> tested straight cable - changing it to crossover makes no
> difference.
>
> router1:
> interface GigabitEthernet0/0/0
> =A0 description Connection to router2
> =A0 ip address 10.0.0.1 255.255.255.252
> =A0 negotiation auto
>
> router2:
> interface GigabitEthernet0/0/0
> =A0 description Connection to router1
> =A0 ip address 10.0.0.2 255.255.255.252
> =A0 negotiation auto
>
> And a bit of output showing the line is up:
>
> router1#show ip interface brief | include 0/0/0
> GigabitEthernet0/0/0 =A0 =A0 =A0 10.0.0.1 =A0 =A0 =A0YES manual up
> =A0 =A0 =A0down
>
> router2#show ip interface brief | include 0/0/0
> GigabitEthernet0/0/0 =A0 =A0 =A0 10.0.0.2 =A0 =A0 =A0YES manual up
> =A0 =A0 =A0down
>
> Now the problem - neither router can ping each other, and even though
> I
> believe these should show up as connected routes, they do not:
>
> router2#show ip route | include 10.0.0
> router2#
>
> router1#show ip route | include 10.0.0
> router1#
>
> Can anyone let me know if there's anything else I can provide that
> will help, or ideally tell me what I'm doing wrong?