Switching

Team, When an ISR gets its information about the configuration server via bootstrap as a DNS name, but the resolved name leads to a non-responding configuration server, will the retries of the ISR include new DNS lookups or will it cache the first l...

Hi All, I have a issue with a 3650 constantly running at 100% cpu and I have been unable to resolve this. CTER3-3650#CTER3-3650#show proc cpu sortedCTER3-3650#sho procCTER3-3650#sho processes cpu sortCTER3-3650#sho processes cpu sorted | ex 0.0Core...

friends i was wondering if you can provide me some information on best practices and reasons for interVLAN to perform on a L3 switch or a router. why someone will do it on a switch or on a router and what are the best practices.

I have customer have nexus 7K and have line card SFP+ but he need Transceiver copper (10G Base-t ) , so there is any GBIC copper 10G Base-t(RJ-45) and what is the part number ?

Hello all, I have an interesting little mac address flapping issue. To set this up I will explain how the network is set up. Basically it is a hub and spoke with each access switch having two trunks back to the core. Spanning tree is blocking on one ...

We have currently a stack of 2 switches in production. ***************************************************************************** WS-C3750G-48TS 12.2(35)SE5 C3750-IPBASE-MWS-C3750G-48TS 12.2(35)SE5 C3750-IPBASE-M **********************************...

Hi, I've configured DHCP snooping on all of our User switches (3750X, 3850s). It works well , but there have been a couple fluky behaviors. One issue, and I can't be sure it is caused by the snooping, is a duplicate address error on laptops. but I'v...

Hi All, I hope a very quick and simple question. Do I need to power down my Catalyst 3750 Network Switch to plug in a SFP Transceiver Module Part #30-1410-02 into an empty Gigabit Port or can I pull into the switch on the fly? The switch is up and ...

Hello, I have a switch Model: WS-C3750-48PS-SIOS version: c3750-ipbasek9-mz.122-55.SE10.bin It continuosly resets. I downgrade to c3750-ipbasek9-mz.122-35.SE5.bin and stops the reboot. The equipment works properly  Anyone have any idea why this happe...

hi, since we installed our new POE switches in different point of services (C2960X Software (C2960X-UNIVERSALK9-M), Version 15.0 (2) EX5).Sometimes power is discovered on non POE devices..And do a reset on the interface..Generally these devices are U...

Hi everyone, a week ago a strange behavior happened on my network where an STP loop occured on two different spanning-tree vlan instances causing the isolation of 4 switchs at the same time (errdisable). Here's the log on PSW01, PSW02, BSW01, BSW02 (...