[c-nsp] Link Problem - 6509 to GSR

Robbie.Jacka at amsouth.com Robbie.Jacka at amsouth.com
Mon Oct 23 10:49:40 EDT 2006


What's your MAC timeout configured as? Do you have UDLD configured on
either side? Why is flow control configured on the 6509? Also, notice on
Gi9/6 on the 6509:

  Last input 2d23h, output 00:00:33, output hang never

I glossed over that when I was looking - guess I looked at Vl30 and not the
phy layer.
--
Robbie Jacka   /   robbie.jacka at amsouth.com
AmSouth Bank   /   Information Security Operations
ofc:205.261.6486  /  fax:205.261.6424  /  ROC 3N5-12




                                                                           
             "Paul Stewart"                                                
             <pstewart at nexicom                                             
             group.net>                                                 To 
             Sent by:                  Robbie.Jacka at amsouth.com            
             cisco-nsp-bounces                                          cc 
             @puck.nether.net          cisco-nsp-bounces at puck.nether.net,  
                                       cisco-nsp at puck.nether.net           
                                                                   Subject 
             10/23/2006 09:42          Re: [c-nsp] Link Problem - 6509 to  
             AM                        GSR                                 
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Thanks for the reply...

I get a MAC on the 6509:

core1-rtr-mb#sh mac-address-table Vlan 30
Legend: * - primary entry

  vlan   mac address     type    learn            ports
------+----------------+--------+-----+--------------------------
*   30  0050.e28a.bda9   dynamic  Yes   Gi9/6
*   30  0004.defd.f40a    static  No    Router

On the GSR:

core1-gsr-mb#sh arp | inc 5/0
Internet  10.250.250.2            -   0050.e28a.bda9  ARPA
GigabitEthernet5/0
Internet  10.250.250.1            0   0004.defd.f40a  ARPA
GigabitEthernet5/0



-----Original Message-----
From: Robbie.Jacka at amsouth.com [mailto:Robbie.Jacka at amsouth.com]
Sent: Monday, October 23, 2006 10:32 AM
To: Paul Stewart
Cc: cisco-nsp at puck.nether.net; cisco-nsp-bounces at puck.nether.net
Subject: Re: [c-nsp] Link Problem - 6509 to GSR

Packets appear to be traversing the link - have you checked the MAC
table on the 6509, or ARP table on the GSR? Checked CDP neighbor status?

robbie






             "Paul Stewart"

             <pstewart at nexicom

             group.net>
To
             Sent by:                  cisco-nsp at puck.nether.net

             cisco-nsp-bounces
cc
             @puck.nether.net


Subject
                                       [c-nsp] Link Problem - 6509 to
GSR
             10/23/2006 09:23

             AM













I have a weird problem between a 6509 and our GSR router:

On the 6509:

interface GigabitEthernet9/6
 switchport
 switchport access vlan 30
 switchport mode access
 no ip address
 speed nonegotiate

interface Vlan30
 ip address 10.250.250.1 255.255.255.0

core1-rtr-mb#sh interfaces gigabitEthernet 9/6
GigabitEthernet9/6 is up, line protocol is up (connected)
  Hardware is C6k 1000Mb 802.3, address is 0009.127a.2ce5 (bia
0009.127a.2ce5)
  Description:
  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, media type is SX
  input flow-control is off, output flow-control is on
  Clock mode is auto
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 2d23h, output 00:00:33, output hang never
  Last clearing of "show interface" counters 2d23h
  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
     378 packets input, 29833 bytes, 0 no buffer
     Received 12 broadcasts (2 multicasts)
     35 runts, 0 giants, 0 throttles
     35 input errors, 0 CRC, 35 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     1208 packets output, 98465 bytes, 0 underruns
     0 output errors, 0 collisions, 2 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

core1-rtr-mb#sh interfaces vlan30
Vlan30 is up, line protocol is up
  Hardware is EtherSVI, address is 0004.defd.f40a (bia 0004.defd.f40a)
  Internet address is 10.250.250.1/24
  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 supported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:02:07, output 00:00:48, 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
  L2 Switched: ucast: 477 pkt, 37840 bytes - mcast: 4 pkt, 290 bytes
  L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes mcast
  L3 out Switched: ucast: 0 pkt, 0 bytes
     1 packets input, 64 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
     15 packets output, 1588 bytes, 0 underruns
     0 output errors, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out


core1-rtr-mb#ping 10.250.250.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.250.250.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms


On the GSR:

interface GigabitEthernet5/0
 ip address 10.250.250.2 255.255.255.0
 no ip directed-broadcast
 no negotiation auto

core1-gsr-mb#sh interfaces gigabitEthernet 5/0 GigabitEthernet5/0 is up,
line protocol is up
  Hardware is GigMac GigabitEthernet, address is 0050.e28a.bda9 (bia
0050.e28a.bda9)
  Internet address is 10.250.250.2/24
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, rely 255/255, load 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full Duplex, 1000Mbps, link type is force-up, media type is SX
  output flow-control is unsupported, input flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 2d23h
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     82 packets input, 18738 bytes, 0 no buffer
     Received 75 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 858 multicast, 0 pause input
     403 packets output, 27276 bytes, 0 underruns
     Transmitted 282 broadcasts
     0 output errors, 0 collisions, 8 interface resets
     0 babbles, 0 late collision, 0 deferred
     3 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out


core1-gsr-mb#ping 10.250.250.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.250.250.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms



BUT.. here's the problem:

core1-gsr-mb#ping 10.250.250.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.250.250.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

This seems like such an easy task... but it's got me baffled why I can't
pass traffic over this link.  I've tried two different GigE ports on
both sides.... re-created the VLAN etc. and even made the interface on
the 6509 a layer3 interface directly (without binding a vlan to it) and
can't pass traffic... it's almost gotta be physical but wondering if
anyone has any ideas?? I'm kinda feeling dumb at this point in time when
we have other links between these two devices and they work fine....

Thanks in advance.

Paul




_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/





_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/






More information about the cisco-nsp mailing list