[c-nsp] Unidirectional CDP traffic

[Gökhan Gümüş]

Hi Daniel,

I can enable PM on my DWDM devices and let you know.

Any ideas more? Is it certain that problem is not located at customer
devices?

Kind regards,
Gokhan

2011/3/31 Daniel Dib <daniel.dib at reaper.nu>

> On to, mar 31, 2011 at 13:50:33, Gökhan Gümüş wrote:
> > Subject: Re: [c-nsp] Unidirectional CDP traffic
> >
> > Hi Daniel,
> >
> > Thanks for this.
> > Actually interfaces are all working as trunk port however they
> > configured like this.
> >
> > We cleared counters and made ping tests.
> > Please see our test results below,
> >
> >
> > Clearing counters:
> >
> >
> > === London ===
> > LIXCORML01#cle count gi3/16
> > Clear "show interface" counters on this interface [confirm]
> > LIXCORML01#p 10.119.44.150
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 10.119.44.150, timeout is 2 seconds:
> > .....
> > Success rate is 0 percent (0/5)
> >
> > LIXCORML01#sh int gi3/16
> >
> > GigabitEthernet3/16 is up, line protocol is up (connected)
> >   Hardware is Gigabit Ethernet Port, address is 68ef.bd4f.ccd7 (bia
> > 68ef.bd4f.ccd7)
> >   Description: abc
> >   MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
> >      reliability 255/255, txload 1/255, rxload 1/255
> >   Encapsulation ARPA, loopback not set
> >   Keepalive set (10 sec)
> >   Full-duplex, 1000Mb/s, link type is force-up, media type is
> > 1000BaseLH
> >   input flow-control is on, output 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 00:00:21
> >   Input queue: 0/2000/0/0 (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 1000 bits/sec, 1 packets/sec
> >      0 packets input, 287503 bytes, 0 no buffer
> >      Received 0 broadcasts (0 multicasts)
> >      0 runts, 0 giants, 0 throttles
> >      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> >      0 input packets with dribble condition detected
> >      38 packets output, 2720 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 output buffer failures, 0 output buffers swapped out
> >
> > LIXCORML01#sh cdp nei gi3/16
> > Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
> >                   S - Switch, H - Host, I - IGMP, r - Repeater, P -
> > Phone,
> >                   D - Remote, C - CVTA, M - Two-port Mac Relay
> >
> > Device ID        Local Intrfce     Holdtme    Capability  Platform
> > Port
> > ID
> > LIXCORML01#
> > ===
> >
> > === Stockholm ===
> >
> >
> > SOXCORML01#cle count gi3/11
> > Clear "show interface" counters on this interface [confirm]
> > SOXCORML01#p 10.119.44.149
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 10.119.44.149, timeout is 2 seconds:
> > .....
> > Success rate is 0 percent (0/5)
> >
> > SOXCORML01#sh int gi3/11
> > GigabitEthernet3/11 is up, line protocol is up (connected)
> >   Hardware is Gigabit Ethernet Port, address is 68ef.bd4f.c51e (bia
> > 68ef.bd4f.c51e)
> >   Description: abc
> >   MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
> >      reliability 255/255, txload 1/255, rxload 1/255
> >   Encapsulation ARPA, loopback not set
> >   Keepalive set (10 sec)
> >   Full-duplex, 1000Mb/s, link type is force-up, media type is
> > 1000BaseLH
> >   input flow-control is on, output flow-control is on
> >   ARP type: ARPA, ARP Timeout 04:00:00
> >   Last input 00:00:00, output never, output hang never
> >   Last clearing of "show interface" counters 00:00:21
> >   Input queue: 0/2000/0/0 (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
> >      35 packets input, 2910 bytes, 0 no buffer
> >      Received 35 broadcasts (35 multicasts)
> >      0 runts, 0 giants, 0 throttles
> >      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> >      0 input packets with dribble condition detected
> >      53 packets output, 3776 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 output buffer failures, 0 output buffers swapped out
> >
> > SOXCORML01#sh cdp nei gi3/11
> > Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
> >                   S - Switch, H - Host, I - IGMP, r - Repeater, P -
> > Phone,
> >                   D - Remote, C - CVTA, M - Two-port Mac Relay
> >
> > Device ID        Local Intrfce     Holdtme    Capability  Platform
> > Port
> > ID
> > LIXCORML01.nd.barcapint.com <http://lixcorml01.nd.barcapint.com/>
> >                  Gig 3/11          133             R S I  WS-C4900M Gig
> > 3/16
> > SOXCORML01#
> > ===
> >
> > Thanks in advance.
> >
> > Gokhan
> >
> >
>
> Traffic is flowing from London to STHLM and STHLM is responding as seen by
> counters. If you debug ICMP you should see that STHLM is receving an echo
> request and sending an echo reply. However the traffic never makes it back
> to London. I think you need to troubleshoot your WDM network. Do you have
> any counters available there?
>
> /Daniel
>
>