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m1979

join:2011-04-17

A very, very strange issue... Trunk between Cisco - Linksys

Hi,

3550 and SRW2008

Trunk between them. Unfortunately I can see CRC errors (!) when I send traffic accross?! And is slow as hell!


CORE2#sh int f0/20
FastEthernet0/20 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 000b.5f42.0c94 (bia 000b.5f42.0c94)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 254/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
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: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 582000 bits/sec, 55 packets/sec
5 minute output rate 45000 bits/sec, 42 packets/sec
18275 packets input, 25063326 bytes, 0 no buffer
Received 115 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
174 input errors, 174 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 61 multicast, 0 pause input
0 input packets with dribble condition detected
11775 packets output, 1737731 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output


What I did:
- replaced 3550 with another 3550 with a different image
- disabled STP on both
- cables replaced...
- upgraded SRW2008 to 1.0.4 from 1.0.2
- both devices work great with a trunk to an access point...?!

Any ideas?
Config is very basic:

3550:

interface FastEthernet0/20
switchport trunk encapsulation dot1q
switchport trunk native vlan 2
switchport mode trunk
switchport nonegotiate


SRW2008:

interface range ethernet g(3-5,7-8)
switchport mode trunk

interface range ethernet g(3-5)
switchport trunk native vlan 2


aryoba
Premium,MVM
join:2002-08-22
kudos:4

1 recommendation

CRC errors usually mean speed/duplex mismatch issue. Try to have on both side either auto/auto or hard-coded (i.e. 100/full or 1000/full).


HELLFIRE
Premium
join:2009-11-25
kudos:18
reply to m1979

Input / CRC errors FROM the SRW.... an issue withe the SRW? Do you have a spare to see if that may be the issue?

My 00000010bits

Regards