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GLC-LH-SM transciever - Problem in Extended Ping

farhan.engr
Level 1
Level 1

Hello,

I have installed two 1000BASE-LX/LH SFP (GLC-LH-SM) each with Cisco SF300-24 and Cisco 2960 in order to establish a backbone connectivity between two departments. The distance between the two departments is around 600 metres

Normal Ping Response is fine as per the below output (highlighted in GREEN):

C:\Users\Admin>ping 145.17.62.148

Pinging 145.17.62.148 with 32 bytes of data:

Reply from 145.17.62.148: bytes=32 time=5ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63
Reply from 145.17.62.148: bytes=32 time=1ms TTL=63

Ping statistics for 145.17.62.148:
     Packets: Sent = 217, Received = 217, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
     Minimum = 1ms, Maximum = 7ms, Average = 1ms

But when I do and Extended Ping between the Switches then I'm getting the following response (highlighted in GREEN):

Test-1#ping

Protocol [ip]:

Target IP address: 145.17.62.148

Repeat count [5]: 500

Datagram size [100]: 18024

Timeout in seconds [2]:

Extended commands [n]:

Sweep range of sizes [n]:

Type escape sequence to abort.

Sending 500, 18024-byte ICMP Echos to 145.17.62.148, timeout is 2 seconds:

!!!!!!!!!.!!!!!!!!!!!....!!!!!!!!!.!!!!!!!!!!!!....!!!!!!!!!.!!!!!!!!!

!!!....!!!!!!!!!.!!!!!!!!!!!!....!!!!!!!!!.!!!!!!!!!!!....!!!!!!!!!.!!

!!!!!!!!!!....!!!!!!!!!.!!!!!!!!!!!!....!!!!!!!!!.!!!!!!!!!!!....!!!!!

!!!!.!!!!!!!!!!!!....!!!!!!!!!.!!!!!!!!!!!!....!!!!!!!!!.!!!!!!!!!!!..

..!!!!!!!!!.!!!!!!!!!!!!....!!!!!!!!!.!!!!!!!!!!!!....!!!!!!!!!.!!!!!!

!!!!!....!!!!!!!!!.!!!!!!!!!!!!.!!!!!!!!!...!!!!!!!!!!!..!!!!!!!!!...!

!!!!!!!!!!!..!!!!!!!!!...!!!!!!!!!!!!..!!!!!!!!!...!!!!!!!!!!..!!!!!!!

!!!!!!!!!.

Success rate is 81 percent (407/500), round-trip min/avg/max = 16/24/42 ms

Can someone please help me on this?

Regards,

Farhan.

3 Replies 3

patrick.preuss
Level 1
Level 1

Hi Farhan

Can you provide a Show Interface ?
Can you Run cable diagnostics?

Patrick

Sent from Cisco Technical Support iPhone App

Dear Patrick,

Please see the following response and advice.

***********************************************************************************************************

TEST-1#test cable-diagnostics tdr int gi0/1

% Set 'media-type rj45' to run TDR test on interface Gi0/1

TEST-1#sh cab

TEST-1#sh cable-diagnostics tdr

TEST-1#sh cable-diagnostics tdr int

TEST-1#sh cable-diagnostics tdr interface gi 0/1

% TDR test was never run on Gi0/1

TEST-1#sh int

TEST-1#sh interfaces gi 0/1

GigabitEthernet0/1 is up, line protocol is up (connected)

  Hardware is Gigabit Ethernet, address is e8ba.7014.5899 (bia e8ba.7014.5899)

  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseLX SFP

  input flow-control is off, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input 00:00:09, output 00:00:00, output hang never

  Last clearing of "show interface" counters 00:12:16

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/0 (size/max)

  5 minute input rate 334000 bits/sec, 111 packets/sec

  5 minute output rate 443000 bits/sec, 115 packets/sec

     75857 packets input, 27886158 bytes, 0 no buffer

     Received 1184 broadcasts (621 multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 621 multicast, 0 pause input

     0 input packets with dribble condition detected

     80161 packets output, 38763382 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     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

***********************************************************************************************************

Regards,

Farhan

Dear,

If anybody can help with the above stated issue, I would be really thankful.

Regards,

Farhan.