Switching

I have a Cisco Nexus 3064 that I am using as part of a flat network for the Lab. I have 30 Virtualization Servers(MS HyperV and VMware vSphere) connected to this switch and I want to enable jumbo frames. The Virtualization Servers are able to ping th...

I am working with the Nexus 9372TX  and utilizing the QSFP-40G-SR4 40gig to 10gig optics.  The documentation of the code version 7.0(3)I4(6) defines using the interface breakout command to split the interface and define the 4 10gig sub interfaces.  I...

Hi, I have 2960-CG switch showing error loading flash switch:Switch:Error loading "flash:c2950-i6q4l2-mz.121-12c.EA1.bin" Interrupt within 5 seconds to abort boot process. Boot process failed...how can we fix it without format OS.& how can i hard r...

Hi, I'm using a Cisco Catalyst 4948 switch with 2 optical SFP modules GLC-SX-MMD. What I'm getting is strange: When connecting the both optical modules with a fiber, the link of both ports is OK. But if I connect the ports to an other devices, compa...

Hi. We have completed our rollout of over 100 L2 switches. All of them have the exact config - except the obvious e.g. ip address etc. We have a direct connection for testing purposes from our offices to the core switches in DC to access all switche...

Hello all, I have two ASR routers that I use for my edge router.  Each router has one connection each to the same ISP on different routers from the ISP.  Each router is set up as a router on a stick with seven sub interfaces.  Each interface is a di...

Hi guys, This is KJ. I'd like to get a helping hand from you. How can I set L3 mode on C6500 switch ? Actually, I tested vlans using C6509. There are a Line card and a supervisor in C6509. 2 vlans(vlan 10 and vlan 20) set in a line card(Port 1-10 vl...

Hi, I have Cisco Catalyst 3560-C 12 ports, running version 15.2.2E6 I have installed a license using ftp. when I use the command show license - I see only 1 license. when I use the command show license all - I see the one I've installed. yet - I can'...

Hi !Is there any way to force the HSRP election process ? I want to change the Standby router (A) to become Active. I am changing the priority value on B to 10 , but it is not falling over to Router B ? Router A config standby 1 ip 10.10.27.1 Route...

Dear Concerned, Please see the below trace report. Herewith show all hop with same ASNs but whereas it should be shown every hop with different ASNs. Please feedback me if anyone knows reason. Router#traceroute 4.2.2.1Type escape sequence to abort...

Hi, I have two core switches in a single MST domain. These are connected to several other third party "spoke" L2 switches which run PVST. There are no loops. I have just seen this error which causes a blocked port for 6 mins. Core Switch 1%SPANTREE...