08-19-2024 06:18 AM
I have a switch stack that I have to clear the arp and mac table every morning for some certain users to be able to work. Has anyone had these issues or know of a bug for the version of code I am on? I know this isn't a lot of info but as soon as I started working on the issue I had a hunch and applied the fix to get users up and working quickly before I was able to grab any info.
This is a switch stack of 3 and is deployed as our access layer.
08-19-2024 06:23 AM
before you clear arp see if IP or MAC appear in other port
also you run any 802.1x ?
MHM
08-19-2024 06:43 AM
- I would advice that you setup a syslog server on the particular stack and examine the logs received daily
(or with quicker intervals) , for instance
because there is good chance that the real cause is something else.
+ In the same context you may also examine traffic on it's upload links for it with network management tools , to
see that you don't have any network storms , loops , broadcast , .... maliciously induced or not.
Have a setup where you have an online view of traffic usage at all times.
+ If nothing can be found consider upgrading to https://software.cisco.com/download/home/284795740/type/280805680/release/15.2.7E10
also an advisory release , and check if that can help.
M.
08-19-2024 12:37 PM - edited 08-19-2024 12:40 PM
Hello @William Foster ,
post a show version
show version | inc image
show switch
to get better help for example to make a bug search we would need some more info
Edit:
forgive me I have just seen that the version is in the subject
15.2.7E4
as already suggested some more info you are using also 802.1X or port security , DHCP snooping and so on would be very helpful to understand your scenario.
Hope to help
Giuseppe
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