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i have a 2821 ISR with a HWIC-4ESW installed and a firewall running ospf on the end of one of the switch ports

the switchport is assigned to a vlan and the vlan interface has an ip

my problem

the switchport is layer 2 and won't see the firewall, i can't even see a mac-address! the line is up as is the protocol so figure its a config problem

i've tried setting the firewall interface in the same vlan number - no joy

i need ospf to run between the firewall and the router - has anyone any idea of what i can do

i think there's a compatibility problem with the HWIC-4ESW and may need another L3 card - can i get one for the 2821?

thanks to anyone taking the time to reply



This should have no problem communicating. Can you try to provide the following:

1. show diag

2. show run int fa x/x >> the switchport connecting to the firewal.

3. sho run inter vlan x >> the vlan created for the port connecting to the firewall.

4. Is the interface vlan up/up? You mentioned the l2 port but was the interface vlan up/up?

Did you try pinging from 2821 to the firewall's interface ip address, the interface connecting to the L2 port.

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