Mar 13

How to validate packets are leaving in a specific Queue on a Cisco Catalyst 4500

CAT4500-SW#show interfaces gigabitEthernet 1/1 counters all

Port                InBytes       InUcastPkts      InMcastPkts       InBcastPkts
Gi1/1        10348352163499       15376980571        691266118         525274945

Port               OutBytes      OutUcastPkts     OutMcastPkts      OutBcastPkts
Gi1/1         9050250973530       13888585162         31104686          58818140

Port              InPkts 64        OutPkts 64    InPkts 65-127    OutPkts 65-127
Gi1/1              19566098           1210635       5768506805        4581601113

Port         InPkts 128-255   OutPkts 128-255   InPkts 256-511   OutPkts 256-511
Gi1/1            3491349331        2957182335        884237405         947840824

Port        InPkts 512-1023  OutPkts 512-1023
Gi1/1             691717237         450855165

Port       InPkts 1024-1518 OutPkts 1024-1518 InPkts 1519-1548 OutPkts 1519-1548
Gi1/1            2405711483         976043383       3332433275        4063774533

Port       InPkts 1549-9216 OutPkts 1549-9216
Gi1/1                     0                 0

Port       Tx-Bytes-Queue-1  Tx-Bytes-Queue-2 Tx-Bytes-Queue-3  Tx-Bytes-Queue-4

Port       Tx-Bytes-Queue-1  Tx-Bytes-Queue-2 Tx-Bytes-Queue-3  Tx-Bytes-Queue-4
Gi1/1         8313588649616      297392712670     110535772827      328733838417

Port       Tx-Drops-Queue-1  Tx-Drops-Queue-2 Tx-Drops-Queue-3  Tx-Drops-Queue-4
Gi1/1                     0                 0                0                 0

Port       Dbl-Drops-Queue-1 Dbl-Drops-Queue-2 Dbl-Drops-Queue-3 Dbl-Drops-Queue-4
Gi1/1                      0                 0                 0                 0

Port         Rx-No-Pkt-Buff     RxPauseFrames    TxPauseFrames   PauseFramesDrop
Gi1/1                     0                 0                0                 0

Port       UnsupOpcodePause
Gi1/1                     0

Port           CrcAlign-Err  Dropped-Bad-Pkts       Collisions        Symbol-Err
Gi1/1                     0                 0                0                 0

Port              Undersize          Oversize        Fragments           Jabbers
Gi1/1                     0                22                0                 0

Port             Single-Col         Multi-Col         Late-Col        Excess-Col

Port             Single-Col         Multi-Col         Late-Col        Excess-Col
Gi1/1                     0                 0                0                 0

Port           Deferred-Col         False-Car        Carri-Sen      Sequence-Err
Gi1/1                     0                 0                0                 0

Port         RxIslTagFrames    TxIslTagFrames RxDot1qTagFrames  TxDot1qTagFrames
Gi1/1                     0                 0      16310123653       13767165428
CAT4500-SW#

Mar 09

EF packets get dropped on the Internet

I have a remote location that connects to the main office with two VPN tunnels. I found that priority (EF) traffic was being dropped on one tunnel, but not the other.

To resolve this issue, I am remarking all traffic to a DSCP value of Zero.

Here is the policy I used.

class-map match-all Remark-All-CM
match any

policy-map ReMark-2-0
class Remark-All-CM
set dscp default

interface FastEthernet0/0 (Inside Interface of WAN router)