Hello, Cisco Community!I’m really happy to share that I’ll be hosting the Cisco Community Lab Series, a brand-new hands-on learning journey designed to help you build practical networking skills step by step.Every Thursday at 8 PM EST, I’ll post a ne...
Forum Posts
We have two switches that are stacked together with ONE stackwise cable. I now have another one that I would like to install to add redundancy.Can I install the cable without powering down the devices?Do I have to reload the switches to get them to ...
Resolved! Switched network
Hi everyone.I have this PKT file to troubleshoot. The first issue was that the switches trunk interfaces were missing the allowed vlan's ID which I corrected. Now the pc in VLAN 10 can ping the pc in VLAN 20. However pcs 30 cannot ping. I have compar...
Hi my new C9300L-24T-4G-A SFP module led won't blink during POST process. Status LEDs still work normally. I haven't plugged in the SFP module and checked the link's operation yet, but I think this is not normal. Does anyone have any suggestions for ...
Hi Guys, We are in the middle of a migration to the new core (9500) with VSL. We are just doing some redundancy tests and we would like to know if it is possible to always have switch 1 active as it recovers, like 9300 do with the stack. So we have: ...
Yeah, I think I did a no no.After the Nexus reboots it simply stays here; CISCO SWITCH Ver7.69 Switch G1 Device detected on 0:6:0 after 0 msecs Device detected on 0:1:1 after 0 msecs Device detected on 0:1:0 after 0 msecs MCFrequency 1333Mhz Reloca...
I have got SNTC-8X5XNBD with my new 9XXX switches. I was wondering if this means that i can open tickets with cisco in case i get issues? because when i tried to do so i was able to only open warranty tickets not even Severity 1 tickets?
Hello all. I have an issue I am trying to work out. I am still crawling when it comes to networking, so I hope this isn't a dumb question. I have a switch that is showing activity on it. It is flashing green. The other end of the cable goes into...
Resolved! Unicast flooding question
Hi all!Long time follower first time poster. I am having some trouble understanding the following topology attached. My general question is how is it possible that the standby HSRP router gets the return path traffic and is allowed to unicast flood t...
HI Community,I need assistance and guidance from my seniors that how should I configured HSRP between below scenarios.
So I bought a C9300-24UX-A for my homelab (not new). It came with a C9300-NM-4G and I also bought a C9300-NM-2Y (dual sfp28) however I cannot get either module to show up in suing "show inventory" and the 25gb module does not ever get a link with the...
Hi, Can I use GLC-LH-SMD and GLC-TE on CBS350-24XS ? In the datasheet, there is nothing to verify that I can use 1G modules on 10G ports. Thanks Debabrata
I have a 2960-S stack and I am unable to log in with SSH or Telnet. When I connect to the console I just get logs scrolling and when it comes up to the log in prompt if I am not fast enough the logs take over and it just keeps scrolling past it. I ...
Hello Guys, we have one 9500-16X and we need to upgrade its image from 16.12.4 to 17.9.4a. I am having one doubt that what steps required to upgrade its rommon? Currently rommon image is 16.12.2r and i found that to upgrade its rommon & image we need...
Resolved! Problem DHCP SNOOPING - ICMP Packets
We have a problem with 'IP DHCP SNOOPING', we have port on switch that it is connected a access control device, but, it doesn't work when we set port with 'ip dhcp snooping limit rate 10', we snifered mirroring this port in notebook with wireshark in...
Team,We have a requirement of configuring "lacp rate fast" on our Cisco switch. We understand that this is not recommended with SSO.In this case we are looking to configure this on a "N9K-C93360YC-FX2" switch. On these switch with no SUP failure capa...
