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Community Member

3524XL needs help

Network Topology:

One 6509 IOS trunk with five 3524XL-EN with fibre channels. Each 3524XL access one Vlan which is created in 6509.

Each 3524XL port connects to a layer 2 switch.

Syndrome:

One of 3524XL with vlan 102 showed the follow log:

Nov 1 10:02:13.892: %LINK-4-ERROR: FastEthernet0/21 is experiencing errors

Nov 1 10:03:14.807: %LINK-4-ERROR: FastEthernet0/21 is experiencing errors

Nov 1 10:04:44.999: %LINK-4-ERROR: FastEthernet0/2 is experiencing errors

Nov 1 10:09:27.702: %LINK-4-ERROR: FastEthernet0/21 is experiencing errors

Nov 1 10:10:28.533: %LINK-4-ERROR: FastEthernet0/21 is experiencing errors

Nov 1 10:11:28.819: %LINK-4-ERROR: FastEthernet0/21 is experiencing errors

Nov 1 10:12:47.896: %LINK-4-ERROR: FastEthernet0/21 is experiencing errors

Nov 1 10:14:59.848: %LINK-4-ERROR: FastEthernet0/21 is experiencing errors

Nov 1 10:16:04.999: %LINK-4-ERROR: FastEthernet0/1 is experiencing errors

When I use "debug ethernet-controller address" command, the follow log showed.:

Nov 1 10:19:11.726: Add address 00d0.b788.1c37, on port 35 vlan 100

Nov 1 10:19:13.407: Delete address 0090.272e.d265, on port 35 vlan 103

Nov 1 10:19:13.816: Add address 0003.47f9.d2cf, on port 35 vlan 101

Nov 1 10:19:16.170: Add address 0090.272f.1113, on port 35 vlan 105

Nov 1 10:19:16.547: Delete address 00d0.b780.80a0, on port 35 vlan 100

Nov 1 10:19:18.115: Add address 00a0.c98e.3d2a, on port 35 vlan 101

Nov 1 10:19:21.591: Delete address 0050.ba1c.fbbc, on port 35 vlan 101

Nov 1 10:19:21.785: Add address 00a0.c984.84a7, on port 35 vlan 100

Nov 1 10:19:23.198: Add address 0090.272f.10b7, on port 35 vlan 100

Please help me to solve this error, thank you very much.

2 REPLIES
Bronze

Re: 3524XL needs help

It looks like there is a known looping issue while trunking with the 3500XL switches.

To avoid this problem, shut down all the ports that you want to trunk before configuring them for trunks. Once you finish all the trunk configuration, unshut all the ports.

Community Member

Re: 3524XL needs help

Sure this problem, Thank you very much.

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