Chapter 9: AI2524 OSI/CLNP Configuration Steps

Configure TARP Timers

TARP timers provide default values and typically do not need to be changed.

The amount of time that the router waits to receive a response from a Type 1 PDU, a Type 2 PDU, and a Type 5 PDU can be configured. In addition, you can also configure the PDU's lifetime based on the num- ber of hops.

Timers can also be set to control how long dynamically created TARP entries remain in the TID cache, and how long the system ID-to-se- quence number mapping entry remains in the loop detection buffer ta- ble. The loop detection buffer table prevents TARP PDUs from looping.

In global configuration mode, configure TARP PDU timers, control

PDU lifetime, and set how long entries remain in cache:

1.Configure the number of seconds that the router will wait for a re- sponse from a TARP Type 1 PDU.

tarp t1-response-timer seconds

2.Configure the number of seconds that the router will wait for a re- sponse from a TARP Type 2 PDU.

tarp t2-response-timer seconds

3.Configure the number of seconds that the router will wait for a re- sponse from a TARP Type 2 PDU after the default timer has ex pired.

tarp post-t2-response-timer seconds

4.Configure the number of seconds that the router will wait for a re- sponse from a TARP Type 5 PDU.

tarp arp-request-timer seconds

5.Configure the number of routers that a TARP PDU can traverse before it is discarded.

tarp lifetime hops

6.Configure the number of seconds a dynamically-created TARP entry remains in the TID cache.

tarp cache-timer seconds

7.Configure the number of seconds that a system ID-to-sequence number mapping entry remains in the loop detection buffer table.

tarp ldb-timer seconds

August 1997

Page 9-63

2524UM

 

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AIS user manual AI2524 OSI/CLNP Configuration Steps Configure Tarp Timers