How to connect a Cat 3550 PWR with Cat 2948G

Unanswered Question
Apr 17th, 2008
User Badges:

Hi, I want to connect a 2948G Switch with 3550 PoE switch together.

-2948G Switch (ver. 120-7.wx5.15a.bin)

3 Vlans

-3550 PWR PoE (122-25.SEE2)

3 Vlans

connected to internet


I want servers with diff. subnet connected on both switches to ping each other and to access internet too.

Pls. suggest a method with commands.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)


You need to configure VTP for VLAN management between the switches, you need a trunk between the 2 switches. You need to configure layer 3 interfaces on the 3550 to handle the interVLAN IP traffic or pass this up to a router with ethernet sub-interfaces. You need to configure a default gateway for your internet traffic.


maddox-mp Sun, 04/20/2008 - 19:45
User Badges:


Unfortunately CAT 2948G cannot do trunking , only bridging , L3 (using BVI Interfaces)and also does encap dot1q, and Vlan's.

See the following link to find out how limited is :

Knowing all the above how can we configure the connectivity between CAT 2948G and CAT 3550 PWR (knowing that is already connected to Internet) . Only servers/workstation connected to 2948G cannot connect to Internet.

Thanks for your help in advance.




This Discussion