Example: Monitoring And Troubleshooting The Tcam Resource - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide

Example: Monitoring and Troubleshooting the TCAM Resource

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This section describes a use case where you can monitor and troubleshoot TCAM
resources using show commands. In this use case scenario, you have configured Layer 2
services and the Layer 2 service-related applications are using TCAM resources. The
dynamic approach, as shown in this example, gives you the complete flexibility to manage
TCAM resources on a need basis.
The service requirement is as follows:
Each bridge domain has one UNI and one NNI interface
Each UNI interface has:
One logical interface level policer to police the traffic at 10 Mbps.
Multifield classifier with four terms to assign forwarding class and loss-priority.
Each UNI interface configures CFM UP MEP at the level 4.
Each NNI interface configures CFM DOWN MEP at the level 2
Let us consider a scenario where there are 100 services configured on the router. With
this scale, all the applications are configured successfully and the status shows
Viewing TCAM resource usage for all stages.
1.
To view the TCAM resource usage for all stages (egress, ingress, and pre-ingress), use
the
show pfe tcam usage all-tcam-stages detail
user@host> show pfe tcam usage all-tcam-stages detail
Slot 0
Tcam Resource Stage: Pre-Ingress
--------------------------------
Free [hw-grps: 3 out of 3]
No dynamic tcam usage
Tcam Resource Stage: Ingress
----------------------------
Free [hw-grps: 2 out of 8]
Group: 11, Mode: SINGLE, Hw grps used: 3, Tcam apps: 2
Used
Tcam-Entries 800
Counters 800
Policers 0
App tcam usage:
----------------
App-Name
Related-App-Name ..
-----------------------------------------------------------------
cfm-filter
cfm-bd-filter
Group: 8, Mode: DOUBLE, Hw grps used: 2, Tcam apps: 1
Used
Tcam-Entries 500
command.
Allocated Available
1024 224
1024 224
1024 1024
Entries Counters Policers Precedence
500 500
300 300
Allocated Available
512 12
OK
Errors
0
0
0
State
0 3 OK
0 2 OK
Errors
0
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state.