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Configuring GRE, NAT, RIPSO, and BFE Services
314470-15.5 Rev 00 21-5
Setting the Keepalive Retries Parameter for GRE Keepalive Messages
When you enable the GRE keepalive message functionality, the value of the
keepalive retries parameter is set to 3 by default. The keepalive retries parameter is
the multiplier used to calculate the amount of time that the router waits for a reply
after sending a GRE keepalive message to a remote end point before declaring
that the GRE tunnel is down.
You can use the BCC or Site Manager to change the value of the timer interval.
Using the BCC
To change the default value of the GRE keepalive retries parameter for a remote
tunnel end point, navigate to the remote GRE tunnel interface prompt (for
example,
box; tunnels; gre/boston; remote-endpoint/austin) and enter:
keepalive-retries <value>
value
is an integer between 2 and 254, inclusive. The default value is 3. It
represents the number by which to multiply the currently configured value of the
keepalive retry timeout interval. For example, if the keepalive retry timeout
interval is set to 20 (seconds) and you set the keepalive retries value to 6, then the
router waits for 120 seconds (6 x 20 seconds) for a reply message before declaring
that the GRE tunnel is down.
For example, the following command sequence changes the keepalive retries
value for the remote tunnel austin to 6 times the current value of the keepalive
timer interval (20) and verifies the change:
remote-endpoint/austin# keepalive-retries 6
remote-endpoint/austin# info
address 192.168.2.4
keepalive enabled
logical-ip-address 0.0.0.1
6. Set the Keepalive Retry Timeout
parameter. Click on Help or see the
parameter description on page A-14
.
7. Click on Apply. The GRE keepalive timer is set for the
selected tunnel end point.
Site Manager Procedure (continued)
You do this System responds
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