Switching

Hi ,   I've read your post on "Unable to change boot file on Cisco 3850 "   Have action your instruction and works well untill the switch reloads   I've attached the full upgrade in a txt file   Assistance would be greatly appreciated   Regards,Theod...

Hi Experts,   I dont see no service password-recovery command on ios 12.1 am I missing something? do we have a workaround?    Thanks,Jv

Hi,   Probably an easy question, but just wanted to find out if there is a way to lock down a Cellular interface to a GSM band to stop it constantly choosing bands which may have a stronger signal but a much slower speed. Using a Cisco 897 with dual ...

Trying to find out in what circumstances, why, would 2 trunk ports 'negotiate' the trunking protocol (ISL or dot1q)? From what I have read, if ISL and 802.1q are both supported, ISL is preferred  - so why negotiate? If only 802.1q is supported then t...

First off i want to say not a networking guy so sorry ahead of time.  Here is the situation i am facing.   Switch a  has a fiber line and an Ethernet line running to switch B.  We want to have both lines up and running in the case of the fiber line g...

Hi Community,   I have a situation where I need two hosts connected to a 2960G switch to send wire-speed broadcast traffic (all F's), between the two hosts.  The two hosts are the only devices on this isolated VLAN and there is no layer 3 interface f...

Hey all   I am having a problem with a 3850-24XS. All traffic stops for 3 pings then returns to normal. Running a constant ping from multiple endpoints on trunk connected switches to multiple ports reveals 3 ping timeouts every 5 - 45 minutes resulti...

Hi All   I have SFP LR type in core(X2-10G-LR) side and access switch side (SFP-10G-LR) but the fiber cable is MM om3.. can work with this case?   Thanks

  Hello,I set up a lab with a switch and a isp routeur connected to it. I can't ping internet from the switch but i can ping the router internal interface (192.168.1.1). set up: SW2960X   -------> ISP routeur ( no access to it, no modification can be...

Hi   Does the 250 Series switches support IP Source Guard feature? I'm looking at the SG250-10P specifically, but I don't see clearly anywhere if the switch has the required feature?

Hi, My English is bad.   I have 3 switches WS-C3850-24T   with sw version   " 03.06.06E0"with license permanet/lifetime of ipbase and lanbase.   I tried use "object-group ACL CLI" but it does not work.   I found this article bug:   https://bst.clouda...

I have C2960X with IOS Version 15.2(2)E6, from the show logging Oct 24 11:54:25.878: %SFF8472-5-THRESHOLD_VIOLATION: Gi1/0/52: Rx power high warning; Operating value:  -2.9 dBm, Threshold value:  -3.0 dBm. what is the advise for this isssue?