Gateway mac on switch

[suthomas1]

Hello All,

We have this vlan 1215 on switches. These were newly created.
There are no access ports assigned against them yet , but they do have trunks on them.

The gateway for this resides on a firewall and the trunk through it has been enabled for above vlan 1215. But we still can't get any arp entries for this new vlan on the switches.

is this normal? If not, whats possibly stopping us seeing the mac address of its gateway
on the switches.

below is output from vlan database for it. the individual ports are part of the po groups.

1215 T23_Apps                        active    Po2, Po19, Po1002, Po1001
                                                Eth1/19, Eth1/14,Eth152/1/17,                                               
                                                Eth151/1/19,

Appreciate all help. Thanks in advance.

[Jon Marshall · Accepted solution]

If that is the management vlan for your L2 switches then you can ping the firewall and you should see an entry.

If this is not the management vlan thenyou will only see an arp entry on any L3 switches.

And you won't see that until something arps for the IP of the firewall.

If you were running a dynamic routing protocol between the L3 switch and the firewall you should see one but otherwise you will have to wait until you attach an end device that uses the firewall as it's default gateway.

Or you could ping between the L3 switch and firewall and then you should see an entry.

Jon