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Webcast-Catalyst9k
New Member

Copper SFP issue on ME3800

Hi,

I was just wondering if anyone can give me an update on bug: CSCth02989.

It is in the release notes; http://www.cisco.com/en/US/docs/switches/metro/me3600x_3800x/software/release/12.2_52_ey/release/notes/ol23402.html

Just wondering if it has been fixed?

6 REPLIES
Hall of Fame Super Gold

Re: Copper SFP issue on ME3800

The release notes indicate the bug as fixed in 12.2 (52) EY3


Have you found otherwise?

Alos, use LAN switching for switches questions.

New Member

Re: Copper SFP issue on ME3800

I’m running 15.1(2)EY, any idea if it’s been fixed in that version.

I am seeing a strange issue where a client did some testing and we seem to be dropping packets at 950mbps, so they are not getting the full gig, noticed some deferred packets, so that it might be related.

Any thoughts?

Regards,

Rehaan Ahmed

BCX Content Distribution Solutions

Tel: +27 (0) 11 266 1437

Cell: +27 (0) 82 555 7866

Email: rehaan@bcxcds.com

Web: http://www.bcxcds.com<>

Hall of Fame Super Gold

Re: Copper SFP issue on ME3800

It is fixed, and the bug is about CPU usage, not dropping packets.

If your switch drops packet most likelye you either are excessing interface capacity, or have configured some QoS.

Hall of Fame Super Gold

Copper SFP issue on ME3800

I've got a ME3824X running 12.2(52)EY3 with GLC-T and working fine.

New Member

Re: Copper SFP issue on ME3800

The switch is hardly loaded, on other interfaces so doubt it’s a backplane issue. There is no QoS configured at all.

Here is the interface config:

interface GigabitEthernet0/19

switchport access vlan 2204

switchport trunk allowed vlan none

switchport mode trunk

mtu 9200

load-interval 30

flowcontrol receive on

spanning-tree portfast

spanning-tree bpdufilter enable

spanning-tree bpduguard enable

spanning-tree guard root

service instance 2 ethernet

  encapsulation untagged , dot1q 1-4094

  l2protocol tunnel cdp stp vtp dtp pagp lldp lacp udld

  bridge-domain 2204

Here is the show interface:

GigabitEthernet0/19 is up, line protocol is up (connected)

  Hardware is Gigabit Ethernet, address is 2c3f.3832.cf13 (bia 2c3f.3832.cf13)

  Description:

  MTU 9200 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 25/255

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Full-duplex, 1000Mb/s, media type is LX

  input flow-control is on, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input 2d21h, output 2d17h, output hang never

  Last clearing of "show interface" counters 2d19h

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 2893910

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  30 second input rate 98683000 bits/sec, 8224 packets/sec

  30 second output rate 0 bits/sec, 0 packets/sec

     3369572015 packets input, 3125242836954 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 watchdog, 0 multicast, 0 pause input

     0 input packets with dribble condition detected

     1898822658 packets output, 1269073856396 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 unknown protocol drops

     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

     Transmit GigabitEthernet0/19             Receive

   1369422594 Bytes                       3320765865 Bytes

   2937217561 Unicast frames              1729168603 Unicast frames

         4204 Multicast frames             267685848 Multicast frames

            0 Broadcast frames                     1 Broadcast frames

    815171930 Dot1Q frames                2732025893 Dot1Q frames

            0 Too old frames              1063895694 Unicast bytes

   1439114890 Deferred frames             2256870107 Multicast bytes

            0 MTU exceeded frames                 64 Broadcast bytes

            0 FCS errors                          16 FCS errors

            0 1 collision frames                   0 Alignment errors

            0 2 collision frames

            0 3 collision frames                   0 Oversize frames

            0 4 collision frames                   5 Undersize frames

            0 5 collision frames                   5 Collision fragments

            0 6 collision frames

            0 7 collision frames                   5 Minimum size frames

            0 8 collision frames          2331331780 65 to 127 byte frames

            0 9 collision frames          1076153936 128 to 255 byte frames

            0 10 collision frames          451897635 256 to 511 byte frames

            0 11 collision frames          234669100 512 to 1023 byte frames

            0 12 collision frames         2197769308 1024 to 1518 byte frames

            0 13 collision frames                  0 Overrun frames

            0 14 collision frames

            0 15 collision frames

            0 Pause frames                         0 Pause frames

            0 Excessive collisions                 0 Symbol error frames

            0 Late collisions                      0 Invalid frames, too large

            0 VLAN discard frames                  0 Valid frames, too large

            0 Excess defer frames                  5 Invalid frames, too small

         1870 64 byte frames                       0 Valid frames, too small

   1168417853 127 byte frames

    576305105 255 byte frames                      0 Too old frames

    212255167 511 byte frames                      0 Valid oversize frames

    137817647 1023 byte frames                     0 System FCS error frames

    842424123 1518 byte frames

            0 Too large frames

            0 Good (1 coll) frames

            0 Good (>1 coll) frames

Hall of Fame Super Gold

Copper SFP issue on ME3800

MTU 9200 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

reliability 255/255, txload 1/255, rxload 25/255

Encapsulation ARPA, loopback not set

Keepalive not set

Full-duplex, 1000Mb/s, media type is LX

input flow-control is on, output flow-control is unsupported

ARP type: ARPA, ARP Timeout 04:00:00

Last input 2d21h, output 2d17h, output hang never

Last clearing of "show interface" counters 2d19h

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 2893910

What the heck???  Is this some kind of bug or something?

"rxload" shows something is being received BUT under "Last input" and "output" shows the interface hasn't received anything for the last 2 days and 17 hours.  Plus look at the total output drops!  WOOOOOW!

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