Switching

I tried to upgrade my cisco before and it stop booting up after i rebooted. Now whenever it boots with autoboot i see...*********************************************************** ** Welcome to Rom Monitor for WS-C4948-10GE System. ** Copyright (c) 2...

Dear all,We are having a setup in which a server is installed with ESXi type 1 hypervisor. The server has been connected to nexus 9K switch port for internet connectivity . We want to create multiple Virtual machines on a server and on each machine w...

Hi,some days ago we had a layer2 loop in our network and several switches announced the following messages:Jun 14 20:17:37.965 MESZ: %ETHCNTR-3-LOOP_BACK_DETECTED: Keepalive packet loop-back detected on GigabitEthernet0/1.Jun 14 20:17:37.965 MESZ: %P...

HiI wanted to share an issue I've had with OSPF and Catalyst 9300 switches. I would like to know if anyone else has seen this or not?We recently purchased 2 * Catalyst 9300-48UXM switches. Switch1 has C9300-NM-8X card installed and network advantage....

the sh flash give me the 846200832 bytes available (1011351552 bytes used)the total files length  is 495013974 not 1011351552.I removed an old bin file (about 500Mb) but  it looks like it hasn't been removedthe file does not appear in sh flash comman...

Dear All, We are having 4500 Cisco Core Sw. It seems some of the Uplinks are flapping and i dont exaclty know where its happening.can someone help how to troubleshoot this issue,

Dear All, can some advise the Backup plan for IPT Servers, im doing a Server level Backup, for the replication can i use Veeam Backup and Replication

I had faced a very strange situation, i have configured portfast and BPDU gaurd on access ports for the end points but my colleague mistakenly connect two ports on the same switch back to back. After that our whole network went down due to congestion...

Hello Community, I'm getting these logs in my VSS device: Feb 13 16:25:22.214 UTC: %MLSCEF-SW1_DFC1-4-FIB_SPACE_LIMIT: FIB Space limit reached, Some IPv4 Multicast routes may be absent from hardware tablesFeb 13 16:25:24.622 UTC: %MLSCEF-SW2_DFC6-4-F...

why is my cisco failing to boot?switch: bootboot: attempting to boot from [flash:cat9k_iosxe.17.03.01.SPA.bin]ERROR: failed to boot from flash:cat9k_iosxe.17.03.01.SPA.bin (Not Found)Please wait while the system restarts. 

Today when I console  one of our client's stacked switch, i found the following logs generating: *Feb 9 07:27:06.336: %PLATFORM_STACKPOWER-3-INVALID_TOPOLOGY: Invalid power stack topology observed by switch 2. More than four switches are connected in...