Cisco AP throwing mismatch errors
I have a couple Cisco Aironet 1200 APs on my network. I keep getting the same error message over and over on these and can't figure out why.
The error is: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0 (not half duplex), with SPR-SPL Ethernet1/0 (half duplex).
"SPR-SPL" is the hostname of my Cisco 3600 router for my P2P. I have checked and Ethernet1/0 is set to full duplex and not auto. I don't understand why this error is being thrown from the AP anyway as they are both plugged into switches and not into each other. The AP is plugged into an edge switch that goes to the core and the router is directly into the core.
The error is: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0 (not half duplex), with SPR-SPL Ethernet1/0 (half duplex).
"SPR-SPL" is the hostname of my Cisco 3600 router for my P2P. I have checked and Ethernet1/0 is set to full duplex and not auto. I don't understand why this error is being thrown from the AP anyway as they are both plugged into switches and not into each other. The AP is plugged into an edge switch that goes to the core and the router is directly into the core.
Are the ports on your switch set static as well? They need to be.
ASKER
~~~~~~~~~~~~~~~~~~~~~AP Running Config~~~~~~~~~~~~~~~~~~~~
sho run
Building configuration...
Current configuration : 1789 bytes
!
! Last configuration change at 11:38:49 EDT Fri Mar 16 2007
! NVRAM config last updated at 11:38:50 EDT Fri Mar 16 2007
!
version 12.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname NRAP28
!
enable secret 5 $1$odd1$mjRwiW6DckUK9fbgnl
!
clock timezone EST -5
clock summer-time EDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00
ip subnet-zero
!
!
no aaa new-model
!
!
!
!
bridge irb
!
!
interface Dot11Radio0
no ip address
no ip route-cache
!
encryption mode wep mandatory
!
!
speed basic-1.0 2.0 5.5 6.0 9.0 11.0 12.0 18.0 24.0 36.0 48.0 54.0
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
!
interface FastEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
!
interface BVI1
ip address 192.168.1.28 255.255.255.0
no ip route-cache
!
ip default-gateway 192.168.1.2
ip http server
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
!
snmp-server community spgsnmpread RO
!
control-plane
!
bridge 1 route ip
!
!
!
line con 0
transport preferred all
transport output all
line vty 0 4
password 7 14031719010D242A28
login
transport preferred all
transport input all
transport output all
line vty 5 15
login
transport preferred all
transport input all
transport output all
!
end
NRAP28#sho int fastethernet0
FastEthernet0 is up, line protocol is up
Hardware is PowerPC405GP Ethernet, address is 0015.63e5.0101 (bia 0015.63e5.0101)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 100Mb/s, MII
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 2/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 12000 bits/sec, 22 packets/sec
5 minute output rate 2000 bits/sec, 3 packets/sec
23273644 packets input, 2477692675 bytes
Received 18880068 broadcasts, 0 runts, 0 giants, 32 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 13 ignored
0 watchdog
0 input packets with dribble condition detected
1406823 packets output, 280437337 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
sho run
Building configuration...
Current configuration : 1789 bytes
!
! Last configuration change at 11:38:49 EDT Fri Mar 16 2007
! NVRAM config last updated at 11:38:50 EDT Fri Mar 16 2007
!
version 12.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname NRAP28
!
enable secret 5 $1$odd1$mjRwiW6DckUK9fbgnl
!
clock timezone EST -5
clock summer-time EDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00
ip subnet-zero
!
!
no aaa new-model
!
!
!
!
bridge irb
!
!
interface Dot11Radio0
no ip address
no ip route-cache
!
encryption mode wep mandatory
!
!
speed basic-1.0 2.0 5.5 6.0 9.0 11.0 12.0 18.0 24.0 36.0 48.0 54.0
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
!
interface FastEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
!
interface BVI1
ip address 192.168.1.28 255.255.255.0
no ip route-cache
!
ip default-gateway 192.168.1.2
ip http server
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
!
snmp-server community spgsnmpread RO
!
control-plane
!
bridge 1 route ip
!
!
!
line con 0
transport preferred all
transport output all
line vty 0 4
password 7 14031719010D242A28
login
transport preferred all
transport input all
transport output all
line vty 5 15
login
transport preferred all
transport input all
transport output all
!
end
NRAP28#sho int fastethernet0
FastEthernet0 is up, line protocol is up
Hardware is PowerPC405GP Ethernet, address is 0015.63e5.0101 (bia 0015.63e5.0101)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 100Mb/s, MII
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 2/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 12000 bits/sec, 22 packets/sec
5 minute output rate 2000 bits/sec, 3 packets/sec
23273644 packets input, 2477692675 bytes
Received 18880068 broadcasts, 0 runts, 0 giants, 32 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 13 ignored
0 watchdog
0 input packets with dribble condition detected
1406823 packets output, 280437337 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
ASKER
Yes, I have forced the switch port to full-duplex as well and I'm still seeing the errors
10 full? Don't allow the speed to auto negotiate either.
ASKER
The Core Switch and 3600 Router (SPR-SPL) have been forced to 10 full. The switch and router are showing that interface at 10/full but the wireless AP is still crying about a duplex mismatch. I don't understand why the AP even cares. It isn't directly connected to the router so why should it care if it's fastethernet port has the same duplex settings as the router's ethernet port? Does anyone know why/how the AP is even seeing this "mismatch"? Does anyone know how to turn off this network snooping?
ASKER
FYI - I have done a reload on both Cisco devices in the event they needed a restart after their settings change.
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ASKER
sho run
Building configuration...
Current configuration : 2291 bytes
!
version 12.2
no service single-slot-reload-enable
service timestamps debug datetime msec
service timestamps log datetime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname SPR-SPL
!
logging buffered 50000 debugging
logging rate-limit console 10 except errors
!
!
!
clock timezone EST -5
clock summer-time EDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00
ip subnet-zero
!
!
no ip domain-lookup
!
no ip dhcp-client network-discovery
!
!
!
!
!
interface Ethernet1/0
ip address 192.168.1.1 255.255.255.0
full-duplex
!
interface Serial1/0
ip address 192.168.254.1 255.255.255.0
ip helper-address 192.168.1.5
ip directed-broadcast
no ip route-cache
no ip mroute-cache
no fair-queue
service-module t1 clock source internal
service-module t1 timeslots 1-24
ip rtp header-compression
!
interface Serial1/1
ip address 192.168.253.1 255.255.255.0
shutdown
!
router eigrp 1
network 192.168.1.0
network 192.168.254.0
no auto-summary
no eigrp log-neighbor-changes
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.1.2
no ip http server
!
call rsvp-sync
!
voice-port 0/0/0
description connection to PBX trunk
operation 4-wire
type 2
!
voice-port 0/0/1
description Connection to PBX trunk
operation 4-wire
type 2
!
voice-port 0/1/0
description connection to PBX
operation 4-wire
type 2
!
voice-port 0/1/1
description connection to PBX
operation 4-wire
type 2
!
!
mgcp profile default
!
dial-peer cor custom
!
!
!
dial-peer voice 5 pots
destination-pattern 2..
port 0/0/0
prefix ,2
!
dial-peer voice 6 pots
destination-pattern 2..
port 0/0/1
prefix ,2
!
dial-peer voice 25 voip
destination-pattern 1..
session target ipv4:192.168.254.2
ip qos dscp cs5 media
!
dial-peer voice 7 pots
destination-pattern 2..
port 0/1/0
prefix ,2
!
dial-peer voice 8 pots
destination-pattern 2..
port 0/1/1
prefix ,2
!
!
line con 0
line aux 0
exec-timeout 0 0
modem InOut
transport input all
speed 38400
flowcontrol hardware
line vty 0 4
password terminal
login
!
!
end
SPR-SPL#
SPR-SPL#sho int ethernet1/0
Ethernet1/0 is up, line protocol is up
Hardware is AmdP2, address is 0050.7309.5731 (bia 0050.7309.5731)
Internet address is 192.168.1.1/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 69000 bits/sec, 28 packets/sec
5 minute output rate 9000 bits/sec, 12 packets/sec
24444 packets input, 5815780 bytes, 0 no buffer
Received 15080 broadcasts, 0 runts, 0 giants, 0 throttles
220 input errors, 83 CRC, 43 frame, 0 overrun, 137 ignored
0 input packets with dribble condition detected
9421 packets output, 2144473 bytes, 0 underruns(0/0/0)
0 output errors, 0 collisions, 3 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out