06-19-2003 03:10 PM - edited 03-02-2019 08:16 AM
I have a pair of Cat4006 switches in the datacenter that I just installed with the 48-port 10/100/1000 BASE-T blades. These things are beautiful!
A problem I'm having, though, is that I can't seem to set the ports into full-duplex gigabit mode. I can set them into full-duplex if they're running 100Base-TX just fine.
For example, do a "show run" and I see something like:
interface GigabitEthernet4/25
description RWC-DB-03-P
switchport access vlan 302
speed 1000
spanning-tree portfast
!
If I try to set it:
rwc-swc-i-3#conf t
Enter configuration commands, one per line. End with CNTL/Z.
rwc-swc-i-3(config)#int gig4/25
rwc-swc-i-3(config-if)#duplex full
Gigabit port is restricted to full duplex
rwc-swc-i-3(config-if)#exit
the running configuration doesn't show that it's full duplex. Also, if I do a "show int gig4/25", it seems to indicate that the port is in full duplex mode.
rwc-swc-i-3#sho int gig4/25
GigabitEthernet4/25 is up, line protocol is up (connected)
...
Full-duplex mode, link type is autonegotiation, media type is T
output flow-control is unsupported, input flow-control is unsupported, 1000Mb/s
input flow-control is off, output flow-control is off
Link type autonegotiation? What gives?
--Peter
Solved! Go to Solution.
06-19-2003 03:54 PM
Gig interfaces are always full duplex.
2.7-4507-a(config)#interface gigabitEthernet 3/1
2.7-4507-a(config-if)#speed 1000
2.7-4507-a(config-if)#duplex full
Gigabit port is restricted to full duplex
2.7-4507-a(config-if)#speed 100
2.7-4507-a(config-if)#duplex full
2.7-4507-a(config-if)#speed 10
2.7-4507-a(config-if)#duplex half
2.7-4507-a(config-if)#
06-19-2003 03:54 PM
Gig interfaces are always full duplex.
2.7-4507-a(config)#interface gigabitEthernet 3/1
2.7-4507-a(config-if)#speed 1000
2.7-4507-a(config-if)#duplex full
Gigabit port is restricted to full duplex
2.7-4507-a(config-if)#speed 100
2.7-4507-a(config-if)#duplex full
2.7-4507-a(config-if)#speed 10
2.7-4507-a(config-if)#duplex half
2.7-4507-a(config-if)#
06-20-2003 02:01 PM
Peter if you don't mind the question. What type of 4006 do you have? I have a few of them on my network and I have only seen them with the Cat OS.. I.E. Set commands.. not the Native "conf t" commands. Please correct me if I am wrong.
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