We're deploying a number of CE500's as part of my client's migration to Cisco switches. However, I am having some issues with trunking or port security (just can't pin point the problem), in that there are cases when two PCs can't see each other even if they're on the same VLAN but connected to different switches. Probably an example is a better way of explaining my problem.
1. I have two CE500 switches and two PCs in a lab environment.
2. I then configured a new VLAN on both switch named VLAN2. The VLAN ID is "2".
3. I configured all access ports to "Desktop" and made them members of VLAN2 on both switches.
4. Configured the Gigabit uplink ports to "Switch" and their native VLAN to "1". Connected the two switches using the uplink port.
5. I configured both PCs to be on the same subnet and connected one PC to each switch.
6. Performed continuous ping on both PCs to verify that they can see each other. Ping is successful.
7. Removed PC1 from SW1 and plugged it on an access port on SW2. Ping dies. Replace PC1 on SW1 and ping resumes.
8. I again put PC1 on SW2 and ping dies. I then remove and reinsert the uplink cable and the ping between workstations resume.
9. If I move either PCs to any port on the same switch, ping is successful. However, if I move any of the two PCs to another switch, ping dies and would only resume if I unplug and plug the uplink port (or if I reload any of the two switches).
Oh yeah, port security is set to default (LOW).
Configuring such on an IOS switch was a breeze. These CE500s are giving me a headache.
I hope someone can give me a clue on what's going on.