Switching

how to see abnormal state when looping occur in spanning tree and it is very slow to type command and show result in telnet? when this occur, we are urgent to shutdown port to stop looping,  but it is very slow to type command and show result in teln...

Hello, Most of the switch ports(which is configured for data and voice together)  goes up & down after every few seconds. 031695: Sep 21 10:56:04.513 MEST: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/12, changed state to down0...

Good Morning I have a WSC4948 as my Core, where i have all my Vlans created, right now is working normal, with a gateway to my router 2901 Router 2901  interface GigabitEthernet0/1 network LAN ip address XX.XX.8.1 255.255.248.0 interface GigabitEt...

Hi,I have a stack of 3850 with version software  cat3k_caa-base.SPA.03.07.03E.pkg installed.During the test in lab I notice that if I power off the master switch the standby doesn't take the control but reboot , before the reload on the console i see...

Hi I'm creating a network design, I need to confirm if a SG300-10SFP with MGBLH1 transceivers will be able to connect to a 2960X using GLC-EX transceivers

The configuration manual for this device says for configuration to log in using the console.  When I begin the configuration I insert the new name and it asks for a password. It will not take any password, the cursor remains stationary no matter what...

What is mean by Per VLAN STP ? What is their role in STP?

I've read the post from 3 years past regarding this subject and the consensus was you must reboot the entire switch stack to upgrade ios, and this was ok because device connectivity is lost anyway even if you rebooted the switches individually. Howev...

I am curious if the Fan Modules and Power Supplies in the 4948E and 4948E-F are identical in nature except for the direction of the air flow in them? Essentially I'd like to take a stack of 4948E-F switches I have and convert them to 4948E switches b...

Hello, We have a WS-C3560E-12D which is experiencing intermittent issues (in particular every few months it complains of extreme temperatures on one particular slot (only a few of the slots are in use so difficult to know if they would also be affec...

Started getting alerts last night: %C4K_REDUNDANCY-2-HANDSHAKE_TIMEOUT_ACTIVE: The handshake messaging between active and standby has not yet started. I tried reseating the standby module (Sup V-10GE 10GE) but it would just come up in rommon. The ios...

Hi i need help regarding memory upgrade kit for C6880-X-LE chaises. I found PART ID for this kit ( C6880-X-LE-MEMKIT= ) but i was not able to find info is this kit is for internal memory or flash memory or storage memory ? Thanks in advance . Regard...