11-03-2014 11:37 AM
We are commisining new link on our router. SFP is connected but not coming up. Here is the interface ststus. Is this physical connectivity problem ot configuration negotion issue?
Thsi is a ASR 1K. I guess if its a physical coneectivty issue does it show notconnecte on the line in bracket? Or on router it doesent please help.
ITV-GRW-INET-RTR1B#show int gigabitEthernet 0/1/2
GigabitEthernet0/1/2 is down, line protocol is down
Hardware is SPA-5X1GE-V2, address is f866.f2aa.e941 (bia f866.f2aa.e892)
Description: ** Part of ether-channel to 6DG internet **
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 not supported
Full Duplex, 1000Mbps, link type is auto, media type is SX
output flow-control is on, input flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
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 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
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 packets output, 0 bytes, 0 underruns
11-03-2014 03:23 PM
Hi raiden1987 ,
Have you checked all the physical possibilities ?
- Bad cables
- Bad SFP.
- Bad port
Have you checked the other side , if it is connected ?
If everything seems fine , you may need to open a TAC case in order to investigate deep the issues with Hardware team or end up in a RMA.
Hope this helps.
-Randy -
11-03-2014 03:49 PM
If your SFP has DOM support, you can verify the optical receive-signal from the other side. This is independant of establishing a link:
xxx#sh hw-module subslot 0/0 transceiver 0 status
The Transceiver in slot 0 subslot 0 port 0 is enabled.
Module temperature = +39.164 C
Transceiver Tx supply voltage = 3298.5 mVolts
Transceiver Tx bias current = 19904 uAmps
Transceiver Tx power = -5.5 dBm
Transceiver Rx optical power = -12.4 dBm
For 1000Base-SX you should have a signal above -17 dBm. Levels below -30 dBm are typically interchanged (or broken) fibers.
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