I have recently been asked to replace 2 x 4908 core switches and replace them with 2 x 3750G-12S fibre switches as the new cores. The requirement was to configure the new switches the same as the old 4908's but unfortunately the config will not work on the 3750g switches. The 4908's used not 5 Vlans (1,10,20,30,999), Bridge IRB, Bridge-groups, subinterfaces and BVI interfaces. Im now in the situation where I have not configured core switches before and would appreciate any help possible with the configs. All 12 ports are gig SFP fibre ports.
The manager has now decided he is happy to reconfigure the entire network from a blank canvas and I now have the job of configuring the network from the core up, which for a CCNA is quite a job!
Please can someone advise me on the best configuration for the core using the 2 x 3750G-12S switches.