Switching

Hi all, There used to be a certification section also, i couldnt see it so i am posting here, kindly guide me a little on my journey. I have 5+ years of working with cisco routers and switches but we dont work on all the technologies that are present...

  Hi,I am just wondering on how mismatched MTU sizes are handled in Layer-2 networks and also inside a particular switches internal architecture.Layer 2 devices do not do fragmentation in the even of MTU mismatch. is this because Layer 2 devices do n...

Hello,We are facing issue with mac address learnt from different port-channels, 1233267: Dec 27 11:28:44.833: %%MAC_MOVE-SW2_SP-4-NOTIF: Host XXXX.XXXX.XXXX in vlan 501 is flapping between port Po60 and port Po32Connectivity is like 6500 as core runn...

Hi All,I am getting the below messages on my Cisco 6500 series switches every 1min. The IOS version is 12.2(33)SXI6 & with SUP32-GE-3B%ILPOWER-7-DETECT: Interface Fa1/1: Power Device detected: Cisco PD%ILPOWER-7-DETECT: Interface Fa1/1: Power Device ...

Hi,We are having 3750 Stack switch as our edge switch. Here we are having some issues as low memory & itermediate High CPU utilization.For memory when we checked its shwoing maximum memory is allocated to DHCPD receive & ARP Input as followsProcessor...

Hello,I have connected router Cisco 2851 (Ge0/1= LAN, Ge0/0= WAN) and switch Cisco WS-C2950G-48-EI . On router LAN interface I would like to create 30 subinterfaces (every subinterface for one user) and this subinterfaces should be unnumbered to Ge0/...

    Hello Expert,I have faced a problem on POS interface,these are two interfaces back to back details:     POS at 7600 router:sh int PO3/0/0POS3/0/0 is up, line protocol is down   Hardware is Packet over Sonet  Description: STM4-To-1stCore-SH  Inter...

Hello,I have a Cisco 5548 Nexus switch with 10Gbase-SR interface transceiver. This interface is connected to Server chasis.The show interface transceiver details output shows High ++ alarm for Current. Additionally, i am getting output errors on this...

Hello,is it generally possible to connect another switch, such as a 3750 to a port of a fabric extenders?Many thanks.

dearskindly why the nexus 2k has 8 uplink ports ????My opinion and plz correct me ..... thats because the nexus 7k or 5k can be devided into 4 virtual devices  ( using vdc)and making 8 uplink ports in the 2k will allow us to use the extender for all ...

Hello friends!I'm trying to understand various vPC/Nexus failure scenarios and I'm not sure I understand the purpose of vPC auto-recovery.Suppose I have a pair of Nexus 7k's (n7k-1 and n7k-2) with a 3rd device dual-homed via a functional vPC.  If I p...

Hello,I have a Cisco Nexus Datacenter solution with this design:Every Nexus 5K is connected with every Nexus 2K with a Port-Channel and vPC.What is the best way,to keep the configurations of the nexus switches synchronous? I have no DCNM (Mgmt.-Tool)...

All,I currently have nexus 5Ks and 2ks interconnected and everything is working fine except L3 routing outside to another router. I can ping between SVI within the Nexus environment but I cannot ping a router that’s attach to the FEX port. Also do yo...