03-18-2013 05:05 AM - edited 03-07-2019 12:18 PM
Hi,
just installed a ASR-1002-X at a site that connects to the LAN by an Avaya 460 switch. I've set the Cisco LAN interface to 100 full and the Avaya LAN port to 100 full but, I'm getting alot of runts. From quick searches I've read that runts are usually caused by duplex mismatches but, these interfaces are set the same. We are going to be replacing these Avayas with Cisco in the near future and the errors don't seem to be affecting performance but it still kinda bothers me. I believe these errors have accumulated from the past 4 days.
Any ideas?
Thank you.
WN-1002-WAN1#sh int g0/0/0
GigabitEthernet0/0/0 is up, line protocol is up
Hardware is 6XGE-BUILT-IN, address is 0006.f60f.5600 (bia 0006.f60f.5600)
Description: Wilmington Data LAN
Internet address is 172.30.100.1/22
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 7/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not supported
Full Duplex, 100Mbps, link type is force-up, media type is T
output flow-control is on, input flow-control is on
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 4d16h
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: Class-based queueing
Output queue: 0/40 (size/max)
5 minute input rate 283000 bits/sec, 209 packets/sec
5 minute output rate 2962000 bits/sec, 341 packets/sec
53456509 packets input, 16288114081 bytes, 0 no buffer
Received 1666041 broadcasts (0 IP multicasts)
129994 runts, 0 giants, 0 throttles
129994 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 673192 multicast, 0 pause input
65365510 packets output, 45843981487 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
03-18-2013 10:18 AM
Hi Patrick,
You can see that the no. of runts and the input errors are the same. Runts are packets
that are less than 64 bytes and may be caused by excessive collisions.
You have to configure both sides (Gig interfaces) the same; what is the router/switch that
the ASR is connected to and is auto negotiation set up there also ?
Pl. also try speed 1000 and duplex full and see if the runts stop incrementing. Do the
same on both sides.
Regards
Inayath
03-18-2013 11:20 AM
Inayath,
Both are set to 100 full. The Avaya model is limited to 100 full.
Thank you.
03-18-2013 11:21 PM
Hi Partrick,
Try to use the new cable and clear the counters on the interface.
Did you happen to change the port on both the ends?
Regards
Inayath
03-19-2013 05:12 AM
Tried different cables as well. Both ends are set to 100 full.
The ASR-1002-X is using a gig interface that is configured to 100 full. The Avaya 460 is using a Fastethernet interface configured to 100 full.
Thank you.
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