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I am attempting to stop ssh to any IP on my switches accept the loopback address. I have created a few different access lists and applied them as an access-class on the vty lines, but this just locks me out of the switch all together.  Here is the is...

jmhouse96 by Beginner
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Used with a WS-C3850-24T-L Catalyst Switch, is the L-C3850-24-L-S license (C3850-24 LAN Base to IP Base Electronic RTU License) a one-time purchase or does it require periodic renewals? If renewals are required, what is the frequency?

LAS1 by Beginner
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On a closed network, I can't gain access to a newly added server by way of Vshpere web browser login. I used wire shark to determine that I am sending a hello but not getting a response. When I directly connect I have no problem, but can't connect ac...

abarb002 by Beginner
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MT-Test-01#copy flash1: tftpSource filename []? c2960x-universalk9-mz.150-2.EX5Address or name of remote host []? filename [c2960x-universalk9-mz.150-2.EX5]?%Error reading flash:c2960x-universalk9-mz.150-2.EX5 (Is a directory) ...

I am getting the following error on all my 9300 switches, but none of my other models... %AAA-3-SERVER_INTERNAL_ERROR: Switch 1 R0/0: sessmgrd: Server ';(null)';: No server stats to increment access accept count! I know it has something to do with ra...

lb123 by Beginner
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Hello.I've got a CISCO IE 4010-16S12P. I need to configure a link with PRP redundancy. (gi25-gi28 interfaceses must be used). I have a wire connection, so GLC-TE 30-1475-01 SFP modules have been bought. Problem is the switch doesn't respond to this m...

Please can you tell me when performance monitoring for Jitter/packet loss will be supported on Cat 9300/9400/9500 (and Cat 3850) IOS-XE switches?Performance Monitoring (PerfMon) remains in the unsupported feature list for Cat 9k even in 16.11.x. (See...

roward by Beginner
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Hi all,   When trying to find out the reason of a crash on a router or due to another reason on an IOS-XE device, I was able to view the tracelog files of the different processess of the router (fman, hman, and so on) using the more command: more boo...

Hi all, Since yesterday, we're having this weird issues that switch ports are going to err-disable due to exceed arp packets:We're seeing these logs:2:10:42 PM  33821 Mar 3 14:10:41.456: %PM-4-ERR_RECOVER: Attempting to recover from arp-inspection er...

Hi All, I have been reading up on UDLD and one of the primary use cases of using this protocol is to prevent L2 loops if a link becomes unidirectional. Does UDLD have any advantages on a routed ports or should this used on L2 ports only? Thanks

dm2020 by Beginner
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