Juniper ACX2000 Configuration Guide

Example: Monitoring and Troubleshooting the TCAM Resource
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 OK state.
1. Viewing TCAM resource usage for all stages.
To view the TCAM resource usage for all stages (egress, ingress, and pre-ingress), use
the show pfe tcam usage all-tcam-stages detail command.
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 Allocated Available Errors
Tcam-Entries 800 1024 224 0
Counters 800 1024 224 0
Policers 0 1024 1024 0
App tcam usage:
----------------
App-Name Entries Counters Policers Precedence State
Related-App-Name ..
-----------------------------------------------------------------
cfm-filter 500 500 0 3 OK
cfm-bd-filter 300 300 0 2 OK
Group: 8, Mode: DOUBLE, Hw grps used: 2, Tcam apps: 1
Used Allocated Available Errors
Tcam-Entries 500 512 12 0
Copyright © 2017, Juniper Networks, Inc.1162
ACX Series Universal Access Router Configuration Guide

Juniper ACX2000 Specifications

General

Brand	Juniper
Model	ACX2000
Category	Network Router
Language	English