HSRP and VLANs on a Cisco 3750
Posted on 2007-10-15
I have VLANs set up on 2 Cisco 3750s (3750A and 3750B). The VLANs are running HSRP. I have two Radware switches (an active and a standby) each with a VLAN defined with 2 ports. Port 1 on the Radware master goes to port 1 on 3750A and port 2 on the same VLAN goes to port 2 on 3750B. Port 1 on the Radware backup device goes to port 1 on 3750B and port 2 goes to port 2 on 3750B.
The problem is that when I disconnect port 1 or port 2 on the Radware BACKUP device, the Cisco 3750 fails over. I think I can understand why the Cisco would fail over if the cable I pulled from the BACKUP device was actually connected to the ACTIVE Cisco device. But even when I disconnect a cable from the BACKUP Radware device from the STANDBY Cisco device, the STANDBY Cisco device takes over and becomes the ACTIVE device.
What am I missing??
Thanks in advance