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Enabling Tunnel and Global Counters for SNMP Statistics Collection

By default, SNMP polling is disabled for L2TP statistics. As a consequence, the L2TP tunnel and global counters listed in Table 1 have a default value of zero.

Table 1: SNMP Counters for L2TP Statistics

Counter Name

Type

jnxL2tpTunnelStatsDataTxPkts

Tunnel

jnxL2tpTunnelStatsDataRxPkts

Tunnel

jnxL2tpTunnelStatsDataTxBytes

tunnel

jnxL2tpTunnelStatsDataRxBytes

Tunnel

jnxL2tpStatsPayloadRxOctets

Global

jnxL2tpStatsPayloadRxPkts

Global

jnxL2tpStatsPayloadTxOctets

Global

jnxL2tpStatsPayloadTxPkts

Global

You can enable collection of these statistics by including the enable-snmp-tunnel-statistics statement at the [edit services l2tp] hierarchy level. When enabled, the L2TP process polls for these statistics every 30 seconds for 1000 sessions. The potential age of the statistics increases with the number of subscriber sessions; the data is refreshed more quickly as the number of sessions decreases. For example, with 60,000 sessions, none of these statistics can be more than 30 minutes old.

Best Practice: The system load can increase when you enable these counters and also use RADIUS interim accounting updates. We recommend you enable these counters when you are using only SNMP statistics.

To enable L2TP statistics collection for SNMP:

Published: 2013-07-31