SG500 showing the same MAC address on more than one port?
My ISP has been help me solve a problem that we had with an interaction between our SG500 battery on HP customer premises equipment.
I have the stack of SG500 divided into two VIRTUAL LANs. 8-port VLAN11 and the rest on VLAN1. Both are of VLAN native, not marked so they will carry only the traffic for their own VLAN with no mixing. I also route between these VLANs on the stack.
VLAN11 switch ip: 10.76.20.20
IP switch VLAN1: 10.1.1.1
I took a port for each VLAN and plugged into the HP PSI switch, where he adapt VLANS separated which then connect to a remote data center through an MPLS.
Here's the question: the SG500 seems to have mac address base on two HP PSI switch ports. This disrupts the HP switch, and I end up having packets to fall into a black hole. This is the output of the switch from HP showing mac based battery SG500 goods between ports in seconds:
HP # display the address mac 8843e1-af7085
Status and counters - Address-Table - 8843e1-af7085
MAC address: 8843e1-af7085
Located on the Port: 15
HP # display the address mac 8843e1-af7085
Status and counters - Address-Table - 8843e1-af7085
MAC address: 8843e1-af7085
Located on the Port: 11
Any idea what's going on here? It's as if the SG500 uses the MAC even for both its IP addresses.
Thank you!
Hi Dani, the only MAC address announced by SX300/500 series should be the Mac system if you show on the SX500 mac address table, you should see the MAC even for both VLAN. I don't know why, is to confuse the HP switch unless it does not correctly between switches vlan tag.
-Tom
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Tags: Cisco Support
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