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Catalyst Uplink cable type

murali.rao
Level 1
Level 1

Hi We have a Cisco 3750 catalyst switch acting as L3 core with GLC-T= 1000BASE-T SFP modules.We have 3560 access switches with GLC-T= 1000BASE-T SFP modules.

What kind of Cat 5(or 6)cables we need to use to connect the access switch to the core using GLC-T= modules??

Usually we use cross cables to connect between switches.

Will straight cables also work???

Regds

Murali

2 Replies 2

spremkumar
Level 9
Level 9

Hi

you can make use of Category 5, 5e, or 6 unshielded twisted pair (UTP) cable for the same with RJ-45 type connector for connecting the same..

regds

Hello,

in addition to the other post, check if your ports support the ´mdix auto´ command, which enables the ports to automatically detect a straight or crossover cable, hence making it insignificant which one you use.

Check this info from CCO:

You can use the mdix auto interface configuration command in the CLI to enable the automatic medium-dependent interface crossover (Auto-MDIX) feature. When the Auto-MDIX feature is enabled, the switch detects the required cable type for copper Ethernet connections and configures the interfaces accordingly. Therefore, you can use either a crossover or a straight-through cable for connections to a copper 10/100, 10/100/1000, or 1000BASE-T SFP module port on the switch, regardless of the type of device on the other end of the connection.

The Auto-MDIX feature is enabled by default on switches running Cisco IOS Release 12.2(18)SE or later. For releases between Cisco IOS Release 12.1(14)EA1 and 12.2(18)SE, the Auto-MDIX feature is disabled by default. For configuration information for this feature, see the switch software configuration guide or the switch command reference.

HTH,

GP