Switching

Hello,Just a quick question if you don't mind.We've got our switches and routers configured for using SSH only to be accessed on the vty lines.Here is an example:ip access-list extended SSH_ACCESS permit tcp 10.x.x.x 0.0.127.255 any eq 22line vty 0 2...

Hello, I am trying to non-disruptively reduce the number of VLANs on a Nexus 7000 switch. The underlying problem is that our contiguous IP space is split into many small subnets, each on its own VLAN, and ip access-lists are used for packet filtering...

Hi there,We have 4 Nexus 7010 in two different Data Centers. One pair is running NX-OS release 5.1.3 but the other pair is running NX-OS release 4.1.2.Now, we need to reallocate one fiber module from one of the pairs to the other. Do somebody knows i...

Guys,Not sure what I'm missing, however, I'm unable to bring a fiber interface up on two switches to trun. Below is the information from running conifig and show int. One swtich is at int gi0/1 and the other at int gi0/3. The link will be configured ...

I can't seem to find the definitive answer for this.I've asked around and some people say the ESW 500 series (but that looks gui based to me) as well as WS-CE500G-12TC (but this looks gui based as well).I want to force myself to practice more IOS com...

HiI've come a cross a client with a number of independent L3 switches (no HSRP/VRRP groups) with "ip helper-address" statements on similar VLAN's.My queries are:-1. Will this generate lots of duplicate DHCP request packets on the server VLAN - is thi...

A few weeks ago I was called to help with a switch crash. There was a running stack of 4 3750 switches with ios c3750-ipbasek9-mz.122-35.SE2.bin. It crashed when adding a new 3750 to the stack. The stack keeps crashing until the new switch was discon...

Dear Experts,We are assinged 192.168.0.1 IP in our Win 2K3 server to communication with connected nodes with same series from 192.168.0.2 to 254at our different departments in our organization.But now problem is this ip seires is over no any ip to as...

Hi,Some time ago I mis-placed (I think) an issue I have regarding DDNS on VRF'ed interfaces.Hardware: Cisco 881 SEC with IOS Version 15.0(1)M4To not duplicate my disussion here, please have a look at https://supportforums.cisco.com/message/3299803Any...

I currently connect all of my VM hosts to stacks of cisco WS-C3750G-24T-S (24 port 3750G switches) . All of the physical interfaces on the VM hosts participate in port-channels that live on the cisco 3750 stacks. The port channel count of 48 on the 3...

Hi,I am trying to understand if I may make use of eFSU to upgrade from a modular (non-installed) ios to a standard ios without having to break the vss and reboot both unit at once?Any help is appreciated.Thanks.

Hi,I"m connecting all 8 ports on one WLC 5508 to my Nexus 7018.  What port channel mode do I need to configure on the ethernet ports on the Nexus?Thank You