Other Network Architecture Subjects

A user connected a 16 port switch into his desk port and the bpdu settings on the port changed state to errdisable. I've since changed the settings removing spanning-tree portfast and spanning-tree bpduguard enable and despite typing shutdown follow...

Hello, I have a switch core 6509 with SUP720 module.Now it appearing error message with show log commands " Nov 8 07:26:50: %SCHED-DFC1-2-SEMUNLOCK: L2 Aging Task attempted to unlock semaphore owned by Unknown.-Traceback= 203F16AC 206F53A4 206F4EA0 ...

I have two 6509s to be configured as ditribution switch and I am looking for a proper way to inter-connect these 2 gigabit interfaces 9/15 and 9/16 on switch A and 9/15 - 9/16 on switch B.I had the 2 gigabit interfaces configured as switch port and r...

Hi All;I have a c2600 router with System image file is "flash:c2600-i-mz.123-24.bin running, i'm trying to configure subinterfaces on the device however the device doesn't give me the option to enter the encapsulation or ISL commands hence i can't ...

We are changing from the DELL 6224 layer-3 to a Cisco 4948 layer-3. Are their any compatibility issues with the two devices, we will be using vlans, tagged and untagged.Thanks

I have a 3560 and trying to downgrade the ios from 12.2.35.se5 to 12.2.25.seb5gettting this error message =================================================Error: The image in the archive which would be used to upgradeError: system number 1 does not s...

What year was RSPAN introduced into the catalyst line? Are there are technical papers available showing this?Thanks

A contractor used a flash drive to copy a new IOS image into flash; however, I cannot get the second image to boot - a 'boot flash:[file]' command had no effect after reboot.3560#sh flashDirectory of flash:/ 2 drwx 192 Feb 28 1993 19:09:...

Yesterday a gigabyte port of 3750 catalyst switch was down suddenly, I did a shut and no shut and this port retrieve connection. Now, I am researching what happened and I can see in show interfaces output of this port the following:Hardware is Gigabi...

I have a couple of switches running catOS and I now have a third that was just installed running IOS. Is there an IOS equiv of the switch address on interface Sc0? A managment IP of any type?Also should probably mention the catOS switches are runnin...

Hi, all4506 L3 port G5/25-26, there are lot of input errors, 0 outputthese two ports are set channel to 3560, 3560 ports are ok, no any errors.I checked the duplex and speed, all of ports are auto (4506 and 3560)********************************** 104...

Hi all, can anyone tell me the command for natting to the outside interface address for all my internal users internet access, i know on my router its ip nat inside source list 1 interface dialler1 overload.what is the command on the asa for this ?th...

I have been trying with little success to reset the switch identity type in CiscoWorks from a "Cisco 3750 Stack" to a "Cisco 3750-24ts". Every time it is modified, after a few seconds the type switches back to the "stack" type. I have even tried re...