Switching

Hi..We supplied Catalyst 6509 our customer site recently.but We got the problem, the problem is that the supervisor didn't come up, still remained rommon mode. the log like below:Testing lower main memory - data equals addressTesting lower main memor...

I am going to change the configuration on the local area network to vtp version 3. Would I just use the vtp version 3 command on the server which is a 6509, and then visit each switch and change it to vtp version 3? Am I on the right path or is the...

Hi,The goal of my lab is to test and prove the effect of QoS between a central site and a remote site. It simulates the case of a customer where I have to configure QoS. The link between the central site and the remote site is normaly a SDSL 2 Mb/s, ...

My CatOS image got corrpupted and now I'm trying to boot off the flash card but after I specify the location of the image..it decompresses but gets stuck at boot slot0:.....binI've tried putting a new image on the flash card but it doesnt work..I wou...

Seeing a strange issue on some cat4500s. Trunking to other switches using the GBIC on the supervisor works fine, but trunking on any copper ports has issues and frequently does not work.Attached sh tech, sh mod and port configuration. The switch th...

HiI have strange problem with ports of my Cisco 4507R-E switch. Sometimes is happened when I look in my CUCM 6.1 to see that one or more phones are not registered. I telnet to 4507R switch to see status of port where IP Phone is connected show ip int...

I am trying to find a dhcp rogue server on a 3750. I am suspecting that the device is connected to a couple of switch stacks. I tried to use the dhcp snooping option but i cant see the table being build. I dont run dhcp pool on switches, I use ip hel...

I have a 2811 with IOS Advanced Security and without AIM card. The Cisco 2800 Series supports IPSec Digital Encryption Standard (DES), TripleDES (3DES), Advanced Encryption Standard (AES) 128, AES 192, and AES 256cryptology without consuming an AIM s...

whey I apply qos settings to the hardware queues in say a 3650 or 6500, are they used all the time, i.e is voice always sent first in the priority queue or is it only when port is congested like in llc or cbwfq?

I have a server that shared the ethernet port for the NIC and the IPMI. I want to associate a vlan (10) to IPMI and use the native vlan 1 for the NIC. I use a 2960G switch, the ports are configured in mode trunk and nonegotiate.The IPMI configured in...

Hi all, it is correct that say http is an application layer protocol, but does each and every application that is networked have its own tcp port number ? and why do they have a port number ?