Switching

Hello - I'm very new to the Nexus OS and I am trying to setup multicast. I found out that you no longer need to enable multicast by doing "ip multicast-routing" that you would just need to do "feature pim". Now I'm trying to enable bidir, in CatOS th...

can CAB-C15-CBN be used with 4500x 32? and can it be ordered any longer in length?

I need to find compatible 1Gb Copper SFPs for the 2960S-48FPD-L.   According to this - https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/hardware/installation/guide_stack/2960SHIG/HIGOVERV.html#wp1250224   The only SFPs supported for th...

I just received a couple 3650 switches and have found that the model number when I do a "show version" from the CLI is not the same as the sticker on the outside of the unit.Show Version says it is a WS-C3650-48PDThe outside sticker says WS-C3650-48F...

  Hello, We have 4 Physical Data Centers in different continents, they're interconnected using IPSEC tunnels with BGP. Everysite site have 2-3 different ISP's and as we all know internet is a messy place where every minute is some action is happening...

hi all,would like to know if auto MDIX are on by default on newer switch. i'm sometimes kinda lazy to check the correct UTP cables and all our cables are usually straight ones. thanks!Switch(config-if)#mdix ?  auto  Enable automatic MDI crossover det...

Hi,   I have a 2901 router with a few IPsecs.  I have two servers (172.31.1.1 and 172.31.2.1).  All customers use these server IPs.  One customer cannot, however, so if from 172.15.0.1 or 172.15.0.2, and destination 192.168.1.1 or destination 192.168...

Hello everyone!   I work for an ISP and on access layer we use ring topology. We use rstp for l2 redundancy on access layer and REP(resilient ethernet protocol) on core/aggregation layers. To tunnel BPDU between edge switches in the access ring we us...

Hi,   We are using CISCO1941/K9 with Cisco IOS Software, C1900 Software (C1900-UNIVERSALK9-M), Version 15.4(3)M3, RELEASE SOFTWARE (fc2) and since three weeks it is having high CPU Usage   When doing show proces cpu sorted I always get ADJ background...

Hi all,   we have a WS-C2960G-48TC-L which often sends SNMP traps with high memory utilization (about 93%). When looking on the switch it looks ok to me: njnb-g3#sh mem                           Head      Total(b)         Used(b)       Free(b)    Low...

Hi   Can you suggest  a Cisco switch and a router that does not  make noise when in operation. At work we use the 2960 catalyst and i wish to buy a similar one for my labs. Any suggestions  for the router. Pricewise I would like the older switch/rout...

Hi,   I am experiencing an issue with PoE on Cat WS-C3850-48U switch interfaces. It was working good before, after few days when i connect an IP phone it is not powering on. I able to see that few ports on the same switch are functioning good and Acc...