Switching

Hi there,There are 2 common vlan attacks:1. switch spoofing2. double taggingMy question is: when the switch gets a double tagged frame doesn't it consider the frame an error and drops it? Even more, does the Switch permit tagged frames as native vla...

How to change the IP address for the switch? Will it affect anythings after changing the IP address?

How to create the different vlan on cisco switch and open certain port for them to communicate to each other?For example, let vlan 120 communicate with vlan 140 through port 168?

3640 router version 12.3We have most of our machines on a class C network. We have a DMZ setup with static NAT addresses. We are running low on the class C network IP addresses so would like to transition to NAT overload (PAT). The commands I am usin...

When a C3560 SDM is set to "desktop routing"; the 'show SDM prefer' output indicates that the given features are supported for 8 routed interfaces. What is the impact to the switch if more than 8 interfaces are configured for routing? Are the listed...

Dear Folks,We are going to migrate Telecom NW.We have existing Campus NW with 2 CORE in redundant and load sharing ( 2 MSFCs in each ).And for Telecom NW we purchased 2 More core SW ( 1 MSFC in each ).So should we go for different NW for Telecom and ...

We want to activate RTSP on two VLANs, 3 and 100, we are going to unite two new Alteon 2424-SSL. Can I leave in the rest of VLANs of the switchs PVSTP +? Do as I can configure this mixed configuration? The switchs are: Catalyst 6506 With 720-3B. Cata...

What are the available options for converting a fiber cable with an SC connector to cat5?

What are the drawbacks in your opinions of using a consumer-type switch(linksys, netgear) as a "lowest layer" switch. "Lowest layer" meaning that I have another switch connected to a fiber backbone and I would use this consumer switch to connect to ...

I have seen an extended access list entry in 2 different forms:access-list 100 permit tcp any any eq telnetand then like the next one with 'any' at the end of the statementaccess-list 100 permit tcp any eq telnet anyKind of curious, why the 'any' at ...

Hi all, "On a 3550 switch what image do i need to upgrade a SMI switch to an EMI? Is it as simple as loading it onto a TFTP server and pushing the image across (obviously if there's enough memory) or do i have to squeeze out the flash, etc, etc. What...

Hi everybody,Had a bit of an issue yesterday - I was running etherchannel in the lab and decided to convert the ports back to ordinary trunk ports. After issuing the no port-channel and various switchport commands, i saw that there were no flashing ...

whats the tcp intercept function

I'm using standalone web authentication on my Catalyst 3750. How can I disable the automatic MAC check?Thanks.