Catalyst 4006 w/supIII to 3640 router connection

[uhtechee]

What is the best way to accomplish this? I have only GB modules in the 4006. I am having an issue with port speed/duplex. Gigabit ports can only be auto or 1000/full, correct? So how do I connect the 4006 to FE fiber modules on the 3640 (I don't think this is possible)? If not then does that mean that I have to buy FE for the 4006? Is there a problem with auto-negotiating between the 4006 and the 3640? Will this cause performance issues?

[efrahim]

Depending on what type of module you have, if you have only 1000X modules then it won't connect to the FE ports but if you have 10/100/1000 module then it should be OK.

Here is the datasheet for the cat4000 for your ref.

http://www.cisco.com/en/US/products/hw/switches/ps4324/products_data_sheets_list.html

[uhtechee]

I have the 48 port gig module that is 10/100/1000BASE-T. The service provider who owns the 3640 is going to send a 10/100BASE-T FE module that I can connect to but I still will have to auto-negotiate to establish a connection. Will this affect my performance? What is the best way to connect the 3640 to the 4006? How do most folks connect FE to Gigabit Ethernet?Thank you for the info.

[scorpions]

you can't connect the 4006 GBIC to the FE fiber module on 3640.