[c-nsp] Jumbo Frames Support on Datacenter Switches

[Ramcharan, Vijay A]

Google search for "4900 data sheet" 
First link goes to a product page for 4900 series switches 

Review data sheets
Catalyst 4948, 4948 10G, 4948E, 4928, 4900M
Jumbo frame support on all ports 

If in doubt, contact Cisco TAC or your local Cisco sales representative.

The 4500 series switches are not comparable to the 4900 switches. 4900
series are targeted for datacenter use; 4500 is not. 

Vijay Ramcharan 
 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Bulleri, Carlos
Sent: Tuesday, August 24, 2010 10:21 AM
To: 'cisco-nsp at puck.nether.net'
Subject: [c-nsp] Jumbo Frames Support on Datacenter Switches


We currently have a 4500 switch with a SupII+ on our Datacenter and all
our server farm is ran through it. I'm trying to redesign our
Architecture to add multiple path to  gain some redundancy so I'm trying
to replace the one switch with 2 switches directly mounted on the server
rack.

I'm looking at the 4900 series as a possibility, I like the capacity and
throughput as well as the power redundancy options available, but I have
a question in regards to Jumbo Frame support. The 4500 series will only
support Jumbo frames on non-blocking ports. This limits the amount of
ports available and I need to enable this feature on a larger amount of
ports to increase performance on  our iSCSI storage device. I've found
no documentation on the 4900 series in regards to jumbo frame support
and I've even found some references indicating that they have the same
limitation as their 4500 series predecessors.

Has anyone successfully implemented Jumbo Frames on a 4900 series?
Should I be looking on a different line of switches all together??



Thanks!!

Carlos.



_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/