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I had this same problem, but the command would only work on switches that were a certain OS version. I dont' remember what that version was, but if the switch won't take the command I think that you are out of luck.

See if this helps: http://www.rpi.edu/~jonesp2/err-disabled.htm

I had a problem with a 3550-12G similar to what you are experiencing. We went through a time where the gig ports would go up and down for no real aparent reason. It turns out that Spanning-Tree wasn't configured properly. Make sure that you configure STP and pick where you want the Root to...

First off I would like to say that the switch does not put ports in administratively shutdown mode on its own. The switch will err-disable ports or block traffic via STP on ports but not shut them down. What I suspect is happening is that at one point you shut the port down, wrote the config...

I've been reading these posts about err-disabled ports, and nobody seems to be giving an accurate solution. I've have ports that go err-disabled every day. Removing things like STP, and port security are not a solution. Here are some very useful commands when troubleshooting err-disabled...

Issue a show vtp status and check to make sure the configurations match. Make sure everything is running the same vtp version. Also check the configuration revision number on the client switches. If you have manually changed the vlan database the configuration reversion may be higher on the...

I have a orinoco/lucent AP-1000 that I have lost the password to. Does anyone have a good link to a password recovery procedure? I've found the procedure for Forced Reload, but I found it confussing. It doesn't tell me how to connect to the AP after I've blown everything away. Any help would...

You need to shutdown inte vlan 1 and bring up inte vlan 2. SWA(config)#inte vlan 1 SWA(config)#no ip address SWA(config)#shutdown SWA(config)#inte vlan 2 SWA(config)#ip add x.x.x.x x.x.x.x SWA(config)#no shutdown That should work. If you want to check just enter show inte vlan 2 from the...

If you want to see why the port is disabled issue: show interface status err-disabled To enable the port you need to first shutdown the port then no shutdown the port. There are also ways to change the settings for the err-disable criteria. PJ

I am using gigastack modules in the gig ports to stack the switches. When you use these modules they are running at 1000-half.

I currently use MRTG to graph all of the interfaces on some of the switches here, but would like to create a couple of graphs that only show collisions on a couple of ports. Has anyone tried to use MRTG to graph collisions on the gigabit ports of a 2950G?

I had a problem a while back where I couldn't get a cisco switch to talk to a lucent switch via 1000SX. As it turned out the lucent didn't support autonegotiation on the GBIC ports, but the Cisco requires it. Might be the cause..hopefully not though.

I was going to try this, but cisco has gotten ride of the handy debug commands that show this. I was also searching for new commands that act like debug ethernet-controllers addr but couldn't find them.

We have been expereinceing a wierd problem between a 3550 and a 2950G. Both switches are running 12.1(11)EA1 and are connected via LX gbics at 1 gig. Every so often the 3550 reports %ETHCNTR-3-LOOP_BACK_DETECTED and shuts down the interface connected to the 2950G. I can't find any other...

I talked with someone in a new group and they brought a few things to my attention. The hardware version of the sx card in the lucent doesn't support auto negotiation. The gigabit ports on the cisco use auto negotiation. There is no way to set the speed but you can say "speed...

I was running into this problem on some lower end switches as it got towards the end of the file. When using Secure CRT you can add line send delays, and character send delays. I fiddled around with these and got it to work consistantly. It depends on the speed of the machine.

I'm trying to connect the gigabit ports on a cisco 6500 and lucent p550 together but it isn't working. The card on the lucent P550 is a M5502-1000LX-F. I have it connected via MM fiber to a LX gbic in the 6500. When I connect the two I can get link on the Lucent but nothing on the Cisco...

I haven't made any changes to the default configuration on the lucent side. On the cisco 2950 I set storm control limits and enabled the port. I also set the interface for switchport mode access interface GigabitEthernet0/1 switchport mode access storm-control broadcast level 20.00 10.00...

Just wanted to say thanks. I was mainly an observer and saw all of the suggestions which helped. I used the Cisco Press book and transcender exams. I don't think that the transcender exam are as good as they could be. Its a good tool to become familar with taking a test on the computer, but...

I'm having a similar problem. I tried connecting a P550 with a 5504 1000-SX card (or something like that) to a cisco 2950G. When I connect two cisco 2950's together they work great. When I try connecting that cisco to the p550 all I get is link on the p550 side. Nothing on the cisco. Does...