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mac in two fdb's

mac in two fdb's

christopher_mad
New Contributor
I have a combination of 460/440s in my network. We have a data(computer) vlan and a phone vlan. Create vlan data tag 60 Create vlan phone tag 61 Conf vlan phone add port 4:21 tagged Conf vlan data add port 4:21 untagged configure lldp port 4:21 advertise system-capabilities configure lldp port 4:21 advertise vendor-specific med capabilities configure lldp port 4:21 advertise vendor-specific med power-via-mdi configure lldp port 4:21 advertise vendor-specific dot1 vlan-name vlan Phone configure lldp port 4:21 advertise vendor-specific med policy application voice vlan Phone dscp 46 When I plug in the phone it will get DHCP for a phone ip-address but the mac for that phone will show up in the fdb for both the data vlan and phone vlan. Is this the expected result? I would assume that we don’t want all the data packets coming down to the phone. Slot-1 # show fdb | include 4:21 c4:64:13:01:02:7d Data(0060) 0010 d m 4:21 c4:64:13:01:02:7d Phone(0061) 0043 d m 4:21 .1 # show iparp | include c4:64:13:01:02:7d VR-Default 10.208.48.99 c4:64:13:01:02:7d 2 NO Phone 61 55
6 REPLIES 6

Paul,

this is how it works in our network.

Johan Hendrik System Architect Audax

BrandonC
Extreme Employee
Hi Christopher,

This looks like it is normal behavior. I would expect the phone's MAC to show up in both VLANs, since it is acting as a switch to pass the PCs data.

-Brandon
GTM-P2G8KFN