A new fiber install from Cogent is not going smoothly. The line has been checked multiple times, the first uncovering and fixing a problem. At this point, I am suspecting the HWIC hardware, and need help on how to prove/diganose.
In either of two routers (an 1921 newly purchased, and an 1841 that's several years old), I can configure the interface, and it believes it can transmit packets, however only input errors show up for inbound.
I have moved the SFP to a DELL switch and can get the interface to come up and successfully ping the other end now, so the SFP and fiber are proven (of course, that switch can't do BGP/OSPF so it's not a solution).
There is virtually no configuration on that interface... simply an IP, and disable negotiation.
Is there any further diagnostic/testing that can be done to prove the hardware is at fault?
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interface GigabitEthernet0/0/0
ip address 38.104.40.14 255.255.255.252
no negotiation auto
!
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GigabitEthernet0/0/0 is up, line protocol is up
Hardware is PM-3387, address is a44c.11ce.9763 (bia a44c.11ce.9763)
Internet address is 38.104.40.14/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 1Gbps, link type is force-up, media type is SX
output flow-control is XON, input flow-control is XON
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:03, 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 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
14 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
204 packets output, 20961 bytes, 0 underruns
0 output errors, 0 collisions, 3 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
CogentFiber#
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CogentFiber#sh inv
NAME: "CISCO1921/K9 chassis", DESCR: "CISCO1921/K9 chassis"
PID: CISCO1921/K9 , VID: V04 , SN: FTX1627809Z
NAME: "High Speed WAN Interface Card - 1 Port Gigabit Ethernet on Slot 0 SubSlot 0", DESCR: "High Speed WAN Interface Card - 1 Port
Gigabit Ethernet"
PID: HWIC-1GE-SFP , VID: V01 , SN: FOC15163S47
NAME: "1000BASE-SX SFP", DESCR: "1000BASE-SX SFP"
PID: GLC-SX-MM-IN , VID: A1 , SN: WX1609253710
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CogentFiber#sh ver
Cisco IOS Software, C1900 Software (C1900-UNIVERSALK9-M), Version 15.1(4)M4, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Tue 20-Mar-12 17:58 by prod_rel_team
ROM: System Bootstrap, Version 15.0(1r)M15, RELEASE SOFTWARE (fc1)
CogentFiber uptime is 29 minutes
System returned to ROM by reload at 17:10:13 UTC Wed Nov 11 2015
System restarted at 17:11:49 UTC Wed Nov 11 2015
System image file is "usbflash0:c1900-universalk9-mz.SPA.151-4.M4.bin"
Last reload type: Normal Reload
Last reload reason: Reload Command
