I have very poor performance in my Cisco 3524XL switch. There are 24 RJ-45 10/100 ports and 2 FDDI ports. I've attached 2 servers to the FDDI ports, both running at 1000Mbits/s and full duplex. On the RJ-45 ports i have 24 Mac stations connected in various speeds/duplex. Generally i have G3 Mac's and G4 Mac's.
The Mac's have very bad performance to the FDDI ports. Seems like there are timeouts and stuff. All the Mac clients have been complaining. The reason why we run some of the stations in half duplex only is that it runs much better for some reason. The Mac stations are running against the FDDI ports but we have an uplink through the FastEthernet0/24 port. I'm also getting error messages in the console about duplex mismatches:
1. duplex mismatch on GigabitEthernet 0/1 (not full duplex), with cisco2950-1 FastEthernet0/1 (full duplex)
2. duplex mismatch on GigabitEthernet 0/1 (not full duplex), with cisco2950-2 FastEthernet0/1 (full duplex)
3. duplex mismatch on GigabitEthernet 0/1 (not full duplex), with cisco 3524 FastEthernet0/24 (full duplex)
These error messages are repeated all the time. I've set the ports on all uplinks so they aren't autonegotiating. and the cisco 2950's aren't connected to the 3524 where these error messages appear.
Anyone have any ideas?
My Cisco 3524 config is:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
!
!
no spanning-tree vlan 1
ip subnet-zero
!
!
!
interface FastEthernet0/1
duplex full
speed 100
!
interface FastEthernet0/2
duplex full
speed 100
!
interface FastEthernet0/3
duplex half
speed 100
!
interface FastEthernet0/4
duplex half
speed 100
!
interface FastEthernet0/5
duplex half
speed 100
!
interface FastEthernet0/6
description KRISTIAN
!
interface FastEthernet0/7
duplex half
speed 100
!
interface FastEthernet0/8
duplex half
speed 100
!
interface FastEthernet0/9
duplex half
speed 100
!
interface FastEthernet0/10
duplex half
speed 100
!
interface FastEthernet0/11
duplex half
speed 100
!
interface FastEthernet0/12
duplex half
speed 100
!
interface FastEthernet0/13
duplex half
speed 100
!
interface FastEthernet0/14
duplex half
speed 100
!
interface FastEthernet0/15
duplex half
speed 100
!
interface FastEthernet0/16
duplex half
speed 100
!
interface FastEthernet0/17
duplex full
speed 100
!
interface FastEthernet0/18
duplex half
speed 100
!
interface FastEthernet0/19
duplex half
speed 100
!
interface FastEthernet0/20
duplex full
speed 100
!
interface FastEthernet0/21
duplex half
speed 100
!
interface FastEthernet0/22
duplex half
speed 100
!
interface FastEthernet0/23
duplex half
speed 100
!
interface FastEthernet0/24
duplex full
speed 100
!
interface GigabitEthernet0/1
spanning-tree portfast
!
interface GigabitEthernet0/2
duplex full
spanning-tree portfast
!
interface VLAN1
ip address 192.168.1.10 255.255.255.0
no ip directed-broadcast
no ip route-cache
!
The Mac's have very bad performance to the FDDI ports. Seems like there are timeouts and stuff. All the Mac clients have been complaining. The reason why we run some of the stations in half duplex only is that it runs much better for some reason. The Mac stations are running against the FDDI ports but we have an uplink through the FastEthernet0/24 port. I'm also getting error messages in the console about duplex mismatches:
1. duplex mismatch on GigabitEthernet 0/1 (not full duplex), with cisco2950-1 FastEthernet0/1 (full duplex)
2. duplex mismatch on GigabitEthernet 0/1 (not full duplex), with cisco2950-2 FastEthernet0/1 (full duplex)
3. duplex mismatch on GigabitEthernet 0/1 (not full duplex), with cisco 3524 FastEthernet0/24 (full duplex)
These error messages are repeated all the time. I've set the ports on all uplinks so they aren't autonegotiating. and the cisco 2950's aren't connected to the 3524 where these error messages appear.
Anyone have any ideas?
My Cisco 3524 config is:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
!
!
no spanning-tree vlan 1
ip subnet-zero
!
!
!
interface FastEthernet0/1
duplex full
speed 100
!
interface FastEthernet0/2
duplex full
speed 100
!
interface FastEthernet0/3
duplex half
speed 100
!
interface FastEthernet0/4
duplex half
speed 100
!
interface FastEthernet0/5
duplex half
speed 100
!
interface FastEthernet0/6
description KRISTIAN
!
interface FastEthernet0/7
duplex half
speed 100
!
interface FastEthernet0/8
duplex half
speed 100
!
interface FastEthernet0/9
duplex half
speed 100
!
interface FastEthernet0/10
duplex half
speed 100
!
interface FastEthernet0/11
duplex half
speed 100
!
interface FastEthernet0/12
duplex half
speed 100
!
interface FastEthernet0/13
duplex half
speed 100
!
interface FastEthernet0/14
duplex half
speed 100
!
interface FastEthernet0/15
duplex half
speed 100
!
interface FastEthernet0/16
duplex half
speed 100
!
interface FastEthernet0/17
duplex full
speed 100
!
interface FastEthernet0/18
duplex half
speed 100
!
interface FastEthernet0/19
duplex half
speed 100
!
interface FastEthernet0/20
duplex full
speed 100
!
interface FastEthernet0/21
duplex half
speed 100
!
interface FastEthernet0/22
duplex half
speed 100
!
interface FastEthernet0/23
duplex half
speed 100
!
interface FastEthernet0/24
duplex full
speed 100
!
interface GigabitEthernet0/1
spanning-tree portfast
!
interface GigabitEthernet0/2
duplex full
spanning-tree portfast
!
interface VLAN1
ip address 192.168.1.10 255.255.255.0
no ip directed-broadcast
no ip route-cache
!