Switching

On out 3760 and 3560's we are getting multiple interface resets on the GBICs linking the idf switches to the MDF (3750) What can we do to see the cause of these resets? THe logs do not seem to be sharing much.Thanks,John

Is there any reason why this command wouldn't work on a 3560 ip-base switch?C3560-24#test cable-diagnostics tdr interface fastEthernet 0/10% TDR test is not supported on interface Fa0/10Here is the config of the interface.interface FastEthernet0/10 s...

On Sunday, 12/7 we had two WS-C3750-48PS-S in a stack fail. Both are rebooting continuously. We replaced both switches and on Tuesday, 12/9 one of the two new switches failed, this time with what appears to be a failed power supply. The only recent c...

What does this command do exactly?

I am building a qos policy based on port ranges. I'm i correct in saying that RTP (range 16384 32768) is the voice bearer port and should be given dscp ef and RTCP,H225,H323,H245,SCCP are all singal protocols and should be give af31. If not what port...

Hi all, when we talk about qos, is things like priority queing / and say prioritizing certain dscp traffic a different thing ?also what is the difference between EF and AF ?Many thanksCarlCan anyone tell me this ?

Hi,Anyone know how to find such a server. We cannot find any mac address that's associated with the DHCP server. We tried sniffing nothing.We cannot yet use dhcp snooping because of an issue toh bootp that we stil use besides dhcp.thx,Marc

Hi,Posting on this forum, I guess i don't need to explain what Iperf is used for...For those who don't, it's a freeware that allows you to measure network bandwidth. Mostly, I use it when my telco company installs a new link. This tool will assure ...

Hi All!!!I have various range VLANs for various tasks. But my partners have owners range VLANs different from me.Can I do replacement vlan on C3560/C3400 series.i.e. I get some VLANs from uplink (XX for example) and translate it into VLAN YYWith best...

We run cat4500-ENTSERVICESK9-M), Version 12.2(40)SG on Cisco 4510Rs.And ccasionally i see CPU spikes of up to 80% for a few minutes and sometimes loss of connectivity to layer 3 addresses on the switches.It has in the past caused brief losses in laye...

Hi,I am still struggling trying to configure port forwarding on our CISCO 2811 Router as mentioned previously LAN, Switching and Routing: Port Forwarding (static PAT) not working.Anyone had similar experience and can shine some light how I go about c...