Switching

We can read the following statement in the CCNA Intro book:One interesting fact about Ethernet CSMA/CD logic is that collisions should be detected within the first 64 bytes of a frame.My question:What is it in the first 64 byte of any frame that the ...

I find myself in uncharted territory here and hope that you can help...I have a customer that owns a building and rents the individual offices to independent business owners. He has two T1's coming in to the building and feeds two separate circuits....

Hello,can I have some information on why ethernet packet should be at least 64 bytes?Thank you.

I need to enable portfast on about 100 switches in different buildings. What is the fastest way. Even if I could do a whole switch at once.thanks

Hi all, are eigrp neighbours directly connected routers ? and how come rip/igrp dont have neighbours, what benefit does this have ?

We are preparing to incorporate UDLD and Loopguard into our infrastructure, and are wondering if anyone can give advise as to UDLD normal or UDLD Aggressive. It seems that UDLD normal, barring any initial miswiring (misconnected ports), will do noth...

hello all,I have a 6509 switch running Software 8.2(2) with 2 sup modules.i am looking for a command that will show all the ip addresses that are mapped to all the ports on the switch. Does such a command exist at all? Thanks in advance.

hello i am a total newb and am having trouble with a lan. i have posted this on another site but nobody seems to know the trouble. here is the link... please can someone point me in the right direction. thankshttp://www.networking-forum.com/viewtopic...

We have number of WS-X6748-GE-TX modules on number of 6513 switches. all switches run SUP720 CATOS 8.2-2.What happens is that the ports on WS-X6748-GE-TX module often lost connectivity to the servers. It usually drops for 2-15 sec and happens for 1-2...

Hi Experts,I'm experimenting with stacking two catalyst 3750's ver 12.2(25)SEE1 and 12.2(25)SEB4. The 12.2(25)SEE1 became the stack master and overwrote code on my ver SEB4 switch. Is there a way to get my original IOS version and codes back onto m...

I think we are over subscribing the ports on our WS-X6548-GE-TX= (Catalyst 6500 48-port fabric-enabled 10/100/1000 Module) line cards in our 6509. This 6509 is the access layer for our servers which are being migrated from 100MB connections to gig c...

Hi,I read that although the root bridge election process is automatic you should manualy select a primary root bridge and a secondary root bridge because you could have an access switch acting as the root instead of a more powerful equipment.Is there...

Hi, with the following the switch is working perfectly with what ever i configured in Cisco ACS....aaa new-modelaaa authentication login default group tacacs+ enable localaaa authentication enable default group tacacs+ enableaaa authorization exec de...