Setup Guide

NOTE: When you nish troubleshooting CoPP operation, disable the collection of CPU trac statistics by entering the no
debug cpu-traffic-stats command.
Troubleshooting CPU Packet Loss
To troubleshoot the reason for CPU packet loss, you can display statistics about system ows on the central switch (aggregated CoPP) or
on a specied set of switch ports by entering the show hardware system-flow[cp-switch | linecard slot-id portset
port-pipe] command. The number of hits for each system ow is also displayed.
Dell#show hardware system-flow linecard2 port-set 0
############## FP Entry for redirecting STP BPDU to CPU Port ################
EID 0x00000300: gid=0xa,
slice=9, slice_idx=0x1, part =0 prio=0x300, flags=0x10202, Installed, Enabled
tcam: color_indep=0,
Stage
InPorts
DATA=0x0000000000000000000000000000000000000000000000000000222222222222
MASK=0x0000000000000000000000000000000000000000000000000000222222222223
DstMac
Offset: 88 Width: 48
DATA=0x00000180 c2000000
MASK=0x0000ffff ffffffff
action={act=DropPrecedence, param0=1(0x1), param1=0(0), param2=0(0), param3=0(0)}
action={act=Drop, param0=0(0), param1=0(0), param2=0(0), param3=0(0)}
action={act=CosQCpuNew, param0=0(0), param1=0(0), param2=0(0), param3=0(0)}
action={act=CopyToCpu, param0=1(0x1), param1=1(0x1), param2=0(0), param3=0(0)}
policer=
statistics={stat id 1 slice = 9 idx=0 entries=1}{Packets}
################ FP Entry for redirecting LLDP BPDU to RSM ################
EID 0x000002ff: gid=0xa,
slice=9, slice_idx=0x2, part =0 prio=0x2ff, flags=0x10202, Installed, Enabled
tcam: color_indep=0,
Stage
InPorts
DATA=0x0000000000000000000000000000000000000000000000000000222222222222
MASK=0x0000000000000000000000000000000000000000000000000000222222222223
DstMac
Offset: 88 Width: 48
DATA=0x00000180 c200000e
MASK=0x0000ffff ffffffff
action={act=DropPrecedence, param0=1(0x1), param1=0(0), param2=0(0), param3=0(0)}
action={act=Drop, param0=0(0), param1=0(0), param2=0(0), param3=0(0)}
action={act=CosQCpuNew, param0=1(0x1), param1=0(0), param2=0(0), param3=0(0)}
action={act=CopyToCpu, param0=1(0x1), param1=2(0x2), param2=0(0), param3=0(0)}
policer=
statistics={stat id 2 slice = 9 idx=0 entries=1}{Packets}
--More--
############## FP Entry for redirecting LACP traffic to CPU Port ############
EID 0x000002fd: gid=0xa,
slice=9, slice_idx=0x3, part =0 prio=0x2fd, flags=0x10202, Installed, Enabled
tcam: color_indep=0,
Stage
InPorts
DATA=0x0000000000000000000000000000000000000000000000000000222222222222
MASK=0x0000000000000000000000000000000000000000000000000000222222222223
DstMac
Offset: 88 Width: 48
DATA=0x00000180 c2000002
MASK=0x0000ffff ffffffff
action={act=DropPrecedence, param0=1(0x1), param1=0(0), param2=0(0), param3=0(0)}
action={act=Drop, param0=0(0), param1=0(0), param2=0(0), param3=0(0)}
action={act=CosQCpuNew, param0=3(0x3), param1=0(0), param2=0(0), param3=0(0)}
action={act=CopyToCpu, param0=1(0x1), param1=4(0x4), param2=0(0), param3=0(0)}
260
Control Plane Policing (CoPP)