FP Rules Queuing Configuration
This chapter contains basic information about cpu-queue properties and complete sample configuration for cpu-queue properties.
DUT has many CPU queues for management/classification of control traffic and provides rate limiters for control plane protection. Different types of CPU port bound packets are queued in different cpu-queues each with different properties like rate, queue-limit, monitoring status and drop status.
Topology
Figure 15-16: Simple configuration of CPU Queuing
Default Values
R1#show cpu-queue details
* - Can not configure the parameter
Cpu queue Rate In PPS Lossy Status Monitor Status
Name Configured Default Configured Default Configured Default
========= ========== ======= ========== ========== ========== ===========
sflow - 32000 - *lossy - monitor
bgp - 1500 - lossless - monitor
vrrp - 500 - lossless - monitor
ldp-rsvp - 500 - lossless - monitor
rip - 500 - lossless - monitor
ospf - 2000 - lossless - monitor
dhcp - 100 - lossy - no-monitor
nd - 6000 - lossless - monitor
mpls - 500 - lossy - no-monitor
pim - 4000 - *lossy - *no-monitor
arp - 6000 - lossless - monitor
igmp - 4000 - *lossy - *no-monitor
bpdu - 10000 - lossless - monitor
ccm - 500 - lossy - no-monitor
bfd - 2000 - lossy - no-monitor
ptp - 1000 - lossy - no-monitor
isis - 500 - lossless - monitor
trill-isis - 1000 - lossless - monitor
acl - 200 - *lossy - *no-monitor
vxlan - 500 - lossy - monitor
Note: Enable feature before validating cpu-queue for that protocol.
Monitor option will generate operational log, if it reaches above 90%. Log generation will stop, when it goes below 90%.
1. 2001 Jan 07 22:29:03.345 : R1 : HSL : NOTIF : [CPU_RATE_HIGH_4]: Average CPU queue rate for bpdu is 90% (540 pkts/sec).
2. 2001 Jan 07 22:29:08.346 : R1 : HSL : NOTIF : [CPU_QUEUE_RECOVERED_4]: CPU queue rate for bpdu is back to normal. Current average rate is 89%.
Lossless option will drop the traffic at ingress interface. We can use "show interface counters indiscard-stats" to verify the drop. Packets will be incremented in IBP Discards column.
Lossy option will drop the traffic at cpu. We can use “show interface cpu counters queue-stats`” to verify the drop.
Last modified date: 07-14-2023