I have an ASR 1002x connected to a 6513. Connection is from ASR Gig Copper SFP to 6513 Copper 10/100/1000 port. The ASR is recevinig Runt and input errors. I have removed the negotiation auto command on both boxes and hard coded the speed etc and still errors occur. I have also added the negotiation auto to both devices and also removed it with out hard coding the speed at and same results. Everytime I have seen these errors is has been to collision caused by a duplex mismatch. This time I can not get rid of the errors. any thoughts??? Thank you!!
Have you tried replacing the SFP modules on both sides? In my experience, input errors almost always relate to layer 1 issues. Could you could replace the SFP / cable and see if the issue is still happening.
I'm wondering if you have figured this one out yet as I am seeing the same issue with the same hardware. I have 6 interfaces between 2 ASR-1002-X routers, all connected to 3750 switches showing the same input errors/runts.
My other interfaces are fiber and don't show any errors.
I'm finding that my runt/input error count is going up by exactly 10 every 10 seconds, on all 6 interfaces. Traffic load doesn't increase or decrease this count. Same as you tried all the speed/duplex/auto negotiation settings with no help.
I am seeing the same thing on my new ASR1002-X. The router came with 4 SFP-GE-T EXT SFP tranceivers included. I am connecting up to a 6509-E. I have tried 3 different CAT6 cables new out of the bag, tried all available SFP slots on the front of the chassis, tried a known good GLC-T, tried setting speed and duplex on both sides of the connection, different line cards in the 6509-E, and a completely separate 6509-E, and I upgraded the IOS on the router. All with the same results.
ASR-1002X-router#sh int g0/0/0
GigabitEthernet0/0/0 is up, line protocol is up
Hardware is 6XGE-BUILT-IN, address is 10f3.119d.9600 (bia 10f3.119d.9600)
Internet address is 10.232.0.9/28
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 221/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not supported
Full Duplex, 1000Mbps, 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 00:14:02, output hang never
Last clearing of "show interface" counters 00:20:15
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 3000 bits/sec, 3 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
3864 packets input, 815922 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
599 runts, 0 giants, 0 throttles
599 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 3246 multicast, 0 pause input
881 packets output, 346328 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
ASR-1002X-router#sh run int g0/0/0
Current configuration : 217 bytes
ip address 10.232.0.9 255.255.255.240
no ip redirects
no ip proxy-arp
no negotiation auto
I'm starting to wonder if this is a spurious message, but I'd like to see if Cisco can say that with confidence. I am opening a TAC case (bummer) and I'll try to update this thread with any results.
I have the following response from Cisco
15.3(3)S will be available at the end of July
15.2(4)S4 will be available at the beginning of August
15.3(2)S1 will be available at the end of May