Ask Me Anything Event Welcome to the Cisco Community Ask Me Anything conversation. Submit your questions from Monday, November 4, 2024 through Friday, November 15, 2024. Our colleagues Rohit Chopra, Vaibhav Aggarwal, Anuraag Majumdar, Saquib Zeya...
Forum Posts
Resolved! Voice VLAN on EtherChannel
We have a policy where ALL client-facing ports have a voice VLAN configured, even if there's no phone on the link. This is to allow at-will movement of phones from anywhere on-campus, to anywhere else on-campus. I work at a university, there's more...
Hello all, I'm looking for anyone with an access to 7301 hardware (POST) troubleshooting docs? I've received two decomm 7301s for the lab, and one is failing what seems to be a POST test. It fails to bring the status led to amber/green, however all f...
Hello All,From few days we are facing MAC flapping issue between both core and distribution switches in our DC network. Now we are using Cisco-3850 on Core netwrok and Cisco-2960 switches using in distribution and access network. So could you please ...
Resolved! TCP Communication/Transmission Graph
The sender increases the congestion window gradually and slighly in tcp communication. Which means as time elapses, the amount of data should be increasing slightly and gradually. BUT, if the sender detects the packet loss, the sender would cut the c...
Hello Guys, I have received a call complaining an ip phone down and after checking the logs "phone worked again" I found this log on the 2960 switch...Controller port error, Interface Gi1/0/5: Power Controller reports power Imax error d...
Hello, I have a Cisco IE2000 with a SFP fibre module installed into port 1/9 the has a long run to a Cisco 3750 where this Trunk should form, but doesn't and the port says: FastEthernet1/9 is down, line protocol is down (notconnect). If we don't use...
How can I disable the USB port using commands?The cisco model is:P / N: WS-C3850-24T-S V07Switch Ports Model SW Version SW Image Mode------ ----- ---------- ---------- ----* 1 32 WS-C3850-24T 03.06.05E cat3k_caa-universalk9 INSTALLThe command "hw-mod...
Hi,Has anyone experienced the problem where a default interface command causes the module to reset?For instancedefault int e1/10 - 11The command above resets module 1.We are using version 6.2(16).TIAPF
Hi. I've searched online and looked at my CCNA book. I can't seem to find how many trunks can be created on Cisco 2960G switch. I logged into 2960 switch, and ran "switch#sh int trunk" and output indicates for port Fa0/17 is1-4094? My switch has 48 p...
Hello,It looks strange for me.The problem here is facing intermittent ping drops for management IP of Cisco switch 6500 running IOS. (separate vlan for management).Then it works automatically and do not get any error logs.But while not pinging,couldn...
I have a problem I urgently need help with. A new room needed an extension switch so I added one. This is the connection I have in my environment:6509 = running EIGRP. This is the distribution/core switch (collapsed core if you will). The DC/DHCP ser...
Resolved! help with cisco 887va and vodafone
hi allplease forgive my ignorance , i am very very new to cisco and i know nothing about it at all . The reason for this post is would like to use a cisco 887va to replace my vodafone crappy little hub with i use for my house , i the reason i want t...
HI, I recently have gotten a Cisco Catalyst 2960-S Series (WS-C2960S-24TS-L) and it appears to have the flash directory completely wiped. My issue is I can't seem to figure out how to upload a new ISO to it so it will finally boot, as the previous o...
My log buffer is 300000 bytes and would like to know a good configuration so I can see logs from previous days (at least a week ago) however the problem is there is a lot of log events due to denied ACL hits. Anyone have a good reccomendation?
Hello, We are facing an issue it seems with our data center design. The design is really simple and straight forward.We have 2 F5 Viprion chassis connected to the access layer in the data center. The access layer is hosted on N9K. The core is N7K.So ...
