Switching

Hello,We upgraded TLSv1.1 on our Cisco WS-C2960L-48PS-LL to TLSv1.2. Upon doing so, our Web Console we used to previously manage the switch, was no longer accessible.  We checked and found http and https was still enabled and flash:/html is the corre...

I am planning on rebooting both the supervisor sup2T modules in our 6509E core switch.  I want to do this with little to no downtime.  My supervisor modules are running 15.1(2)SY2 software on both.  the redundancy are configured to use SSO.  What com...

Hi All,We did a one to one config migration from Cisco 6807 with Supervisor C6800-SUP6T to Cisco 9606R with Supervisor 2.After the migration we encountered traffic disruption within the network. Along with that we continuously received the log  "PORT...

Hi, we have configured netflow on Catalyst 9300 switch, but seems it does not send traffics to Solarwinds. We have configured NTA for this switch. But solarwinds never receive any netflow traffics. Below is the netflow config on C9300. Can someone pl...

Hello,Has anyone ever tried xFSU and fast reload?I have been experiencing with the 2 features, but so far it is a hit and miss.The command "show xfsu eligibility" always show that the switch is eligible for xFSU.So far, xFSU with a 9300L stack does n...

We are currently planning an upgrade of our cat9500-484YC switches. The switches are running SVL between them and current running version is IOS-XE 16.12.1We are planning to upgrade it to IOS-XE 17.15.x.The current ROMMON Bootldr version is 16.12.1 a...

Hi friends, Please suggest the appropriate storm control level configuration for both Catalyst(9k) and Nexus(9k) switches. Up to what level can switches function without any issue? Didn't find any recommended or best practice documents.Thanks

Hi all,I’m following the white paper “NextGen DCI with VXLAN EVPN Multi-Site Using vPC Border Gateways” (https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/whitepaper-c11-742114.html) to interconnect 4 legacy data c...

CISCO C9500 32C has no uplink ports, so is the case like it cannot be used in access or Distribution layer? Also, Is it necessary that   Uplink ports must be always SFP ports? ( Since we have to use fibre optic cable for uplinking)  

Switches - MS software versions MS 18.1.8.1 changelogImportant alertsMS130-24(P) switches will reboot twice during the upgrade process when transitioning to MS 18.1.8 (or later) from MS 18.1.7 or earlier. This behaviour is expected, and is not indica...

Hello team, Can the DAD link be 1G or 10G? thanksCharles 

Important alertsMS130-24(P) switches will reboot twice during the upgrade process when transitioning to MS 18.1.8 (or later) from MS 18.1.7 or earlier. This behavior is expected, and is not indicative of a problem.New feature highlightsGroup Policy A...

A number of years ago when we rolled out our 3650 switches we encountered the issue with ipdt (ip device tracking) which sends out fake arp requests with a source of 0.0.0.0 that seem to upset industrial automation devices like HMIs (PanelViews) and ...