Switching

Discuss Catalyst brand switches with peers and experts.
cancel
Showing results for 
Search instead for 
Did you mean: 
cancel

Labels

Forum Posts

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...

switch 1 provision ws-c2960s-24pd-lswitch 2 provision ws-c2960s-48fpd-lswitch 4 provision ws-c2960s-48fpd-l                   Do I need to worry about this? or is there a way to make it number 3?Switch Ports Model              SW Version            S...

Everything I find says I have to enable BPDU filtering on an interface so that it will not errdisable when trunking a switch. This of course prevents me from dual homing a switch. Am I missing something? Is there a way to configure an interface on th...

              Hi All,                   Is there a way to confirm the cli commands inputted into a Nexus5k (NX-OS) Ver 4.1(3) N1(1), before copying it to start. The JunOS has a "commit check" command that will give a heads up if the commands you are ...

I have seen very strange behavior. The following two commands show different outputs...core2#sho mac address-table dynamic | in cc04     7  0009.0fbb.cc04   dynamic  Yes        150   Po10core2#sho mac address-table address 0009.0fbb.cc04Legend: * - p...

Difan Zhao by Level 5
  • 2296 Views
  • 16 replies
  • 0 Helpful votes

Recently one our 7606-S devices was unexpectly shutdown due to loss of power.  When this device returned online, all the OSPF neighbor adj started flapping.  Our debugs shows that the OSPF process is establishing a Full neighbor state with each neigh...

Tony by Level 1
  • 822 Views
  • 1 replies
  • 0 Helpful votes

We have a WS-C6506-E and We need to do an upgrade from SUP32 to SUP2T. Is there any documentation on how to do it and what are things that should be changed?* We have 3 cards WS-X6148A-GE-TX* We are adding 10 GIG card to the switch.

I have 2 Nexus 5548 connected by 2 links using SFP-10G-LR Gbics. All the ports are in protocol down state. I`ve already tested the cabling between the DCs - it is monomode and OK. Does anybody knows if it could be a N5K configuration parameter, softw...

Hi all,I am a newbie and would really appreciate it if someone can answer the following questions.1. How does it work if a packet is send from one network to another network and the MAC of destination if unknown? My understanding is the sender's netw...

ehope2014 by Level 1
  • 803 Views
  • 2 replies
  • 0 Helpful votes

Hi All,It just suddenly come into my mind, should we use a prefectly identical hardware to utilize FHRP such as HSRP, VRRP, or GLBP?Let say I have Catalyst 4500 with Supervisor A (Supervisor A supports GLBP for example), should I use the exact same s...

Hi all,I am an Unix administrator and we lost all account and password informations to connect on a Catalyst 3750 switch.Is there a way to connect to the switch (With a serial cable?) an to create a new account without losing the configuration ?Thank...

bbiessy92 by Level 1
  • 1094 Views
  • 4 replies
  • 0 Helpful votes

HI,I was recommended to start using vrf's to separate networks defined on my switches but I am not sure what is the added value of using vrf's.how is it different than having different vlans and controlling access with acl's? do all switches support ...

network770 by Level 1
  • 13117 Views
  • 8 replies
  • 0 Helpful votes