Switching

Hello,I'm trying to build a typology similar to my work in GNS3, I'm using routers with the NM-16ESW module for 16 switch ports.  Anyway I'm trying to get the host on the VLAN 90 switch an IP address via DHCP but it's having none of it. Core 1 and 2 ...

Hello, I just have one little question :Is it possible to link a HP switch (pro curv 4204vl) and a Cisco switch (2960G) with a fiber-optic link ?And of course, each of them use a transceiver of the brand of its manufacturer Thanks in advanceBest Rega...

Can someone help me please? I have EEM configured on cisco 3560 switch. The configuration is below. I want that switch inform me through email when device with particilular IP address become unavailable. For some reason this configuration is not good...

Is there anyway to recover startup config in the NVRAM from Cisco 1801 that has faulty power supply? It literally does not boot up. No LED alias dead.How to replace the power (inbuilt power I assume).  Thanks 

Right now  WS-C4506-E is having current as IOS cat4500e-ipbase-mz.122-46.SG.bin.I just need to know if there are any challenges in upgrade the IOS of modular switch from 12.x ipbase to 15.x entservicesk9.If there are any challenges, then any possible...

Hi everyone, I'm trying to make my DWDM-XFP-C to work in my CRS-1 at wavelength 55 but the port keeps reporting a wrong wavelength when I do the show controller command: RP/0/RP0/CPU0:Lab1#show controller dwdm0/2/0/1 opticsMon Aug  4 17:22:04.659 UTC...

Hi all, I have two switches connected in cross-3750X stack into a single SW 6500., But I get the following error appears.18w2d: %SW_MATM-4-MACFLAP_NOTIF: Host 0012.950a.9952 in vlan 10 is flapping between port Gi5/0/46 and port Gi6/0/44What can i do?...

When enabling VTP vlan punning on the VTP server and using the trunk allow command on trunk ports should all vlans still sync to the vtp clients? Is there any way to prevent this? My VTP server has a large list of vlans and I would like only the vlan...

Hello. I currently have a stack of 3750G switches that have the IP base image. I have a scenario where I need to implement policy based routing which requires the ip services or EMI image. My question is do all switches in the stack need the same ima...

Hi..on IOS versions higher than 12.2(50) on Cisco 3560G-48TS I get this error/traceback, when I reach a certain number of Access-lists group'ed to "interface vlan", and the ACL inserted in the TCAM reaches acl label #128 (can be seen with : Show plat...

Hi All, I understand that if I dual homed two Fex 2248s to two parent Cisco 5548UP switches that I can still use port-channels from my hosts connecting to the Fex 2248s. I also understand that with dual homed Fex I can attached devices with a single ...

We've got a number of 3750 switches across our network and at our colo. These switches are a mix of 24 and 48 port, some FE and some GiB, most are stacked but a few use a X-over cable. My question is, what's the best settings for the devices we have ...