Cisco Cisco ASR 5000
FA Service Configuration Mode Commands
ha-monitor ▀
Command Line Interface Reference, StarOS Release 18 ▄
5071
Usage
Use this command to set parameters for the HA monitor feature. This feature allows the AGW/FA to monitor
HAs with which it has MIP sessions. The monitoring feature is triggered when the AGW/FA does not receive
any MIP traffic from a HA for a configured amount of time (
HAs with which it has MIP sessions. The monitoring feature is triggered when the AGW/FA does not receive
any MIP traffic from a HA for a configured amount of time (
max-inactivity-time
). The AGW/FA starts
sending special MIP RRQ monitor messages and waits for RRP monitor message responses from the HA.
The RRQ monitor messages are addressed to the HA service address. The source address of the monitor-
request messages is the FA service's IP address.
The actions taken during monitoring are comprised of the following:
The RRQ monitor messages are addressed to the HA service address. The source address of the monitor-
request messages is the FA service's IP address.
The actions taken during monitoring are comprised of the following:
If no monitor response is received during the interval time (
interval
), the AGW retransmits the
monitor message a configured number of times (
num-retry
).
If no response is received after retransmitting for the number configured in
num-retry
, the HA is
considered down. The AGW/FA sends a trap (HAUnreachable) to the management station.
Monitoring of this HA is stopped until a MIP control message is received from the particular HA
and when the AGW/FA sends a trap (HAreachable) to the management station and starts monitoring
the HA again.
Monitoring of this HA is stopped until a MIP control message is received from the particular HA
and when the AGW/FA sends a trap (HAreachable) to the management station and starts monitoring
the HA again.
When an HA receives the RRQ from an FA, it verifies the message and identifies it as a monitor
message based on a special reserved NAI (in the message) and a Monitor HA CVSE in the RRQ.
The HA responds with an RRP with Reply code 0x00 (accepted) and includes the Monitor HA
CVSE. When the FA receives the RRP from the HA, it updates the activity for the peer HA to
maintain the “up” state.
The HA responds with an RRP with Reply code 0x00 (accepted) and includes the Monitor HA
CVSE. When the FA receives the RRP from the HA, it updates the activity for the peer HA to
maintain the “up” state.
Important:
This command only sets the behavior of the HA monitor feature. To enable the HA monitor feature
for each HA address, refer to the
fa-ha-spi
command in this chapter. Up to 256 HAs can be monitored per system.
Example
The following commands set the HA monitor message interval to
45
seconds, the HA inactivity time to
60
seconds, and the number of HA monitor retries to
6
:
ha-monitor interval 45ha-monitor max-inactivity-time 60ha-monitor num-
retry 6
retry 6