[afnog] L2 channel errors

ibtisam jamal ibty.jamal at gmail.com
Wed Nov 2 09:26:53 UTC 2011


Hi,

from 4 ge interfaces on one ge PIC all 4 interfaces  show the errors ,while
only 2 of them are configured as trunks the other 2 have only one vlan
configured each.All the 4 interfaces have the L2 errors.Last night we tried
to swap the PIC but today the same errors.

We also see packet drops under the class-of-service

""""""> show interfaces ge-0/0/1 extensive
Physical interface: ge-0/0/1, Enabled, Physical link is Up
  Interface index: 170, SNMP ifIndex: 725, Generation: 173
  Description: D
  Link-level type: Ethernet, MTU: 1600, Speed: 1000mbps, BPDU Error: None,
MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled,
  Flow control: Enabled, Auto-negotiation: Disabled, fault: Online
  Device flags   : Present Running
  Interface flags: SNMP-Traps Internal: 0x4000
  CoS queues     : 4 supported, 4 maximum usable queues
  Schedulers     : 256
  Hold-times     : Up 0 ms, Down 0 ms
  Current address: 00:19:e2:86:80:01, Hardware address: 00:19:e2:86:80:01
  Last flapped   : 2011-11-02 01:51:55 EAT (10:13:53 ago)
  Statistics last cleared: 2011-11-02 10:04:33 EAT (02:01:15 ago)
  Traffic statistics:
   Input  bytes  :          49223082344             53230784 bps
   Output bytes  :          43352750162             47051840 bps
   Input  packets:            468368451                62570 pps
   Output packets:            337658392                45492 pps
   IPv6 total statistics:
    Input  bytes  :                   0
    Output bytes  :                   0
    Input  packets:                   0
    Output packets:                   0
  Ingress traffic statistics at Packet Forwarding Engine:
   Input  bytes  :          49229162185             53242312 bps
   Input  packets:            468425572                62580 pps
   Drop   bytes  :               479368                    0 bps
   Drop   packets:                 5185                    0 pps
  Label-switched interface (LSI) traffic statistics:
   Input  bytes  :                    0                    0 bps
   Input  packets:                    0                    0 pps
  Input errors:
    Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Policed discards:
767, L3 incompletes: 0, L2 channel errors: 15638, L2 mismatch timeouts: 0,
    FIFO errors: 0, Resource errors: 0
  Output errors:
    Carrier transitions: 0, Errors: 0, Drops: 0, Collisions: 0, Aged
packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource
errors: 0
  Ingress queues: 4 supported, 4 in use
  Queue counters:       Queued packets  Transmitted packets      Dropped
packets
    0 best-effort              1090515
1090515                    0
    1 expedited-fo           443512908            443507723
5185
    2 assured-forw            12408363
12408363                    0
    3 network-cont            11418971
11418971                    0
  Egress queues: 4 supported, 4 in use
  Queue counters:       Queued packets  Transmitted packets      Dropped
packets
    0 best-effort             16596881
16596881                    0
    1 expedited-fo           313019071
313019071                    0
    2 assured-forw             7958627
7958627                    0
    3 network-cont              128410
128410                    0
  Queue number:         Mapped forwarding classes
    0                   best-effort
    1                   expedited-forwarding
    2                   assured-forwarding
    3                   network-control
  Active alarms  : None
  Active defects : None
  MAC statistics:                      Receive         Transmit
    Total octets                   49223082344      43352750162
    Total packets                    468368451        337658392
    Unicast packets                  468366514        337656279
    Broadcast packets                        4                4
    Multicast packets                     1933             2109
    CRC/Align errors                         0                0
    FIFO errors                              0                0
    MAC control frames                       0                0
    MAC pause frames                         0                0
    Oversized frames                     15749
    Jabber frames                            0
    Fragment frames                          0
    VLAN tagged frames                       0
    Code violations                          0
  Filter statistics:
    Input packet count               468368451
    Input packet rejects                     0
    Input DA rejects                         0
    Input SA rejects                         0
    Output packet count                               337658392
    Output packet pad count                                   0
    Output packet error count                                 0
    CAM destination filters: 0, CAM source filters: 0
  Autonegotiation information:
    Negotiation status: Incomplete
  Packet Forwarding Engine configuration:
    Destination slot: 0
  CoS information:
    Direction : Output
    CoS transmit queue               Bandwidth               Buffer
Priority   Limit
                              %            bps     %           usec
    0 best-effort             5       50000000     r              0
low    none
    1 expedited-forwarding   75      750000000    60              0
high    none
    2 assured-forwarding     15      150000000    30              0
low    none
    3 network-control         5       50000000     5              0
low    none
    Direction : Input
    CoS transmit queue               Bandwidth               Buffer
Priority   Limit
                              %            bps     %           usec
    0 best-effort            95      950000000    95              0
low    none
    3 network-control         5       50000000     5              0
low    none
  Logical interface ge-0/0/1.0 (Index 143) (SNMP ifIndex 762) (Generation
744)
    Flags: SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.183 ]  Encapsulation: ENET2
    Traffic statistics:
     Input  bytes  :          49222672530
     Output bytes  :          43352161335
     Input  packets:            468368342
     Output packets:            337658370
    Local statistics:
     Input  bytes  :             17970292
     Output bytes  :             19314766
     Input  packets:                99187
     Output packets:                97392
    Transit statistics:
     Input  bytes  :          49204702238             53211248 bps
     Output bytes  :          43332846569             46978904 bps
     Input  packets:            468269155                62548 pps
     Output packets:            337560978                45504 pps
    Protocol inet, MTU: 1582, Generation: 811, Route table: 0
      Flags: Sendbcast-pkt-to-re
      Addresses, Flags: Is-Preferred Is-Primary
        Destination: 10.87.8.96/30, Local: 10.87.8.98, Broadcast:
10.87.8.99, Generation: 825
    Protocol mpls, MTU: 1570, Maximum labels: 3, Generation: 812, Route
table: 0
  Logical interface ge-0/0/1.32767 (Index 144) (SNMP ifIndex 877)
(Generation 745)
    Flags: SNMP-Traps 0x4000 VLAN-Tag [ 0x0000.0 ]  Encapsulation: ENET2
    Traffic statistics:
     Input  bytes  :                    0
     Output bytes  :                    0
     Input  packets:                    0
     Output packets:                    0
    Local statistics:
     Input  bytes  :                    0
     Output bytes  :                    0
     Input  packets:                    0
     Output packets:                    0
    Transit statistics:
     Input  bytes  :                    0                    0 bps
     Output bytes  :                    0                    0 bps
     Input  packets:                    0                    0 pps
     Output packets:                    0                    0 pps



On Tue, Nov 1, 2011 at 8:06 PM, Mark Tinka <mtinka at globaltransit.net> wrote:

> On Tuesday, November 01, 2011 04:58:45 PM ibtisam jamal
> wrote:
>
> > Please see the interface statistics below ,i can't trace
> > where these errors are comming from .
> >
> > Any pointers .Its happening to all interfaces on this PIC
>
> Is this interface an 802.1Q trunk to a switch?
>
> If so, you could be seeing the error because you're likely
> receiving frames with one or more VLAN tags that are not
> configured on the router.
>
> Mark.
>
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