Switching

Has anyone had any issues with CAT6 cabling with the EX switches?

I have a client who has had an office refurbishment and installed CAT6 cabling. Since then they have had problems with ports bouncing. The cabling company have been asked to come back in and retest but the results came back clear. 

The VC is made up of a number of nodes consisting os a EX4500 RE and some EX4200s. Ports bounce across all members of the EX4200s. The EX4500 is connected to only fibres and has displayed no bounces.

I would look for an equipment, rack, and/or cabling grounding fault.

It should work.

Cable Specification for 10GBASE-T Network Ports and 10GBASE-T Expansion Module Ports
Ports on Switches IEEE Cable Standard Cable Standard Specification Maximum Reach Frequency (MHz) Additional Information
10GBASE-T network ports and 10GBASE-T expansion module ports Class E/ CAT 6 Unshielded Twisted Pair (UTP) ISO/IEC TR 24750 / TIA TSB-155-A 180 ft (55 m) 1–250 CAT 6 cables are defined to perform at frequencies up to 250 MHz and are sensitive to alien crosstalk. To use such cables to connect to 10GBASE-T ports, you must ensure that the cable installation is tested and is certified for 500 MHz as per TIA TSB-155 standard.
Class E/ CAT 6 Shielded Twisted Pair (STP) ISO/IEC TR 24750 / TIA TSB-155-A 328 ft (100 m) 1–250
Class EA/ CAT 6A ISO/IEC 11801:2002 Amendment 1 / ANSI TIA-568-C.2 328 ft (100 m) 1–500
Class F/ CAT 7 ISO/IEC TR24750 328 ft (100 m) 1–600
Class FA/ CAT 7A ISO/IEC 11801:2002 Amendment 1 328 ft (100 m) 1–1000

From the above table we could find that the EX4550  A 10GBASE-T can be converted as a VC port and also supported the CAT 7 cable with the above specification on the interfaces.

Reference link is below:
http://www.juniper.net/documentation/en_US/release-independent/junos/inf ormation-products/pathway-pages/ex-series/ex4550/ex4550.html
http://www.juniper.net/documentation/en_US/release-independent/junos/top ics/reference/specifications/cable-ex4550-network.html

ok thanks