[c-nsp] Regarding HSSI Loop back test

[krishna at siticable.co.ug]

Dear Gert,

I tried that too, Still i cant able to ping the interface from the console.

3825#sh run int hss 2/0
interface Hssi2/0
 ip address 83.229.2.82 255.255.255.252
 serial restart-delay 0
 no cdp enable
end

when i ping the interface i get this,

3825#ping 83.229.2.82

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 83.229.2.82, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

surpricingly the interface stats also looks fine.

Hssi2/0 is up, line protocol is up
  Hardware is M1T-HSSI-B
  Internet address is 83.229.2.82/30
  MTU 4470 bytes, BW 45045 Kbit, DLY 200 usec,
     reliability 143/255, txload 1/255, rxload 1/255
  Encapsulation HDLC, crc 16, loopback not set
  Keepalive set (10 sec)
  Restart-Delay is 0 secs
  Last input never, output 00:00:02, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 11
  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, 2 runts, 0 giants, 0 throttles
              0 parity
     696594 input errors, 578459 CRC, 0 frame, 90706 overrun, 720 ignored, 
27429
 abort
     843 packets output, 26332 bytes, 1 underruns
     0 output errors, 0 applique, 1359 interface resets
     0 output buffer failures, 0 output buffers swapped out

Any clues please.

Thanks

Kris.


> Hi,
> 
> On Fri, Jul 06, 2007 at 10:55:01AM +0300, Wycliffe wrote:
> > Try ping the interface from outside the router. Ie on from onother
> interface
> > like Ethernet
> 
> This will test whether the interface is "up", but it will *not* test
> the physical hardware, the loop, etc. - as such it's pretty useless to
> do a loopback test.
> 
> When pinging from the router, it will send out the packet via the interface,
> and then it will be looped back - so you can see whether the hardware is OK.
> 
> [..]
> > #sh run interface hssi 0/1
> > ip address 83.229.2.82 255.255.255.252
> > loopback dte
> > serial restart_delay 0
> > no cdp enable
> > end
> 
> This is where I see the problem - "loopback dte" instructs the router
> to do a loopback towards the line, and the line is looped via RF cable,
> so there is effectively two loopbacks...
> 
> To test converter and RF cable, remove the "loopback" statement from
> the interface.
> 
> gert
> -- 
> USENET is *not* the non-clickable part of WWW!
>                                                           
> //www.muc.de/~gert/
> Gert Doering - Munich, Germany                            
> gert at greenie.muc.de
> fax: +49-89-35655025                       
> gert at net.informatik.tu-muenchen.de
> 




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