[c-nsp] Link Problem - 6509 to GSR

Paul Stewart pstewart at nexicomgroup.net
Mon Oct 23 10:23:13 EDT 2006


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






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