why we need stackable switch 3750

krishnakomiti · ‎02-08-2008

why we need stackable switch 3750..instead of stackable i will go for many switches seprately...Is it make difference...

rgodden · ‎02-08-2008

Having worked on other vendors 'stack crap' i gave a deep sigh when Cisco followed suit, stacks give customers no end fun and games when units need swopping , stack cables wearing out if you insert them too many times.

Cisco seems to be following other vendors in other ways , just look at how difficult the website has become to use recently.

Edison Ortiz · ‎02-08-2008

Connecting the switches via a stack cable provides inter-switch connection speed up to 32Gbps on the 3750 and 64Gbps on the 3750E.

Connecting the switches via the front uplink ports, provides inter-switch connection speed up to 8Gbps (assuming you were to etherchannel 8 ports).

Stackable provides single point of management and IP address conservation. When you stack the switches, all members of the stack are display under a single management interface.

Non-Stackable switches need to have independent management address (wasting IP address space) and you have to telnet from one switch to the other while troubleshooting.

Spanning-Tree: with stackable solution, there isn't an issue with SPT on inter-switch connections.

HTH,

__

Edison.

Joseph W. Doherty · ‎02-08-2008

Besides all the good stuff Edison notes, there's other L3 advantages of stacking a pair of 3750s vs. keeping them separate.

As one router, instead of two, shrinks the network topology which is often good.

If there multi-device edge VLANs, unicast flooding can be avoided by using one stacked router vs. a separate pair.

Instead of having an edge L2 device with uplinks to two routers, and all the issues of using both paths, you can etherchannel the dual links to different stack members.