This is just an attempt of mine to reach out to the Cisco Networking community to see if others have been experiencing this particular problem. I've recently purchased (2) 48 port versions of the 3550-EMI. Units were inter-connected via fiber Gigabit Ethernet ports creating a physical loop (Switch A G01=>Switch B G02 & Switch A G02=>Switch B G01). The switches fail detect loop, both assume root bridge roles, and VLAN1 (only VLAN1!!!) goes into loop. Other non-native create VLANs behave properly (i.e. detect loop, determine root bridge, and block one port in physical loop). VLAN1 will go into a loop straight out of the box with no special configs.
I have experienced the same problem, but had to get around the issue by configuring some other switches to get the job done that evening. I am going to that customer site tomorrow (20th August 2002 @ 09.00 BST) and will be trying the 3550 equipment again. The 3550 G12 switch that I had problems with was running 12.1.9.EA1 IOS. I will get back to you soon. Please update me if you have any other information.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
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