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2948G Layer 2 - GBICs..

twaite
Level 1
Level 1

We have a client that wishes to use 3 WS-C2948Gs (L2s) connected to each other. The first will be connected using a fiber GBIC, with the other GBIC port used to connect to the 2nd 2948G in the middle, which then connects to the 3rd and final 2948G. We would use the WS-5484 (fiber) to connect everything.

Here is our question. Someone told us that the 2948G which uses the CAT4000 IOS, does routing only on the GBIC ports. That did not make sense to us, as we assumed the GBIC ports would be on the same switching fabric as the 48 10/100s.

The client is wishing to use the 2948 due to the cost/per port as opposed to other 48-port switches.

Lastly, if anyone knows, does the 2948G accelerate connection when connected to other Cisco switches, or is it just straight 10/100 (excluding the GBICs)?

1 Reply 1

ankurbhasin
Level 9
Level 9

HI,

2948G-L2 is a pure layer 2 switch so no chance of routing. It only use CATOS and not IOS. that is true that it belongs ot cat4000 family but routing is only possible is 2948g-L3 swtch or cat4000 sup2+ and above.

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2948/index.htm

This link is for gbic port configuration:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2948/inst_gd/05modcnf.htm

Lastly :

The Catalyst 2948G, 2948G-GE-TX, and 2980G switches are designed for high-performance, high-density wiring-closet applications

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2948/inst_gd/01intro.htm

HTH

Ankur

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