Cisco ACE-4710-K9 Administration Guide - Page 269
Configuring the Heartbeat Interval and Count, heartbeat, count, interval
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Chapter 7 Configuring Redundant ACE Appliances Configuring Redundancy The vlan_id argument specifies the identifier of an existing VLAN. Enter an integer from 2 to 4094. For example, enter: host1/Admin(config-ft-peer)# ft-interface vlan 200 To remove the FT VLAN from the peer configuration, enter: host1/Admin(config-ft-peer)# no ft-interface vlan 200 Configuring the Heartbeat Interval and Count The heartbeat interval determines the frequency in milliseconds (ms) at which the active member of the FT group sends the heartbeat packets to the standby member. The heartbeat count is the number of missed heartbeats that the standby member must detect before determining that the active member is not available. To configure the heartbeat interval and count, use the heartbeat command in peer configuration mode. The syntax of this command is: heartbeat {count number | interval frequency} The keywords and arguments are: • count number-Specifies the number of heartbeat intervals that must transpire with no heartbeat packet received by the standby member before the standby member determines that the active member is not available. Enter an integer from 10 to 50. The default is 10 heartbeat intervals. If the standby member of the FT group does not receive a heartbeat packet from the active member, a time period equal to count number times interval frequency must elapse before a switchover can occur. For example, in the default case, where the heartbeat frequency is 300 ms and the heartbeat count is 10, if the standby member does not receive a heartbeat packet from the active member for 3000 ms (3 seconds), a switchover occurs. • interval frequency-Specifies the interval in milliseconds (ms) between heartbeats. Enter an integer from 100 to 1000 ms. The default is 300 ms. For example, to set the heartbeat count to 20, enter: host1/Admin(config-ft-peer)# heartbeat count 20 To reset the heartbeat count to the default of 10, enter: host1/Admin(config-ft-peer)# no heartbeat count OL-11157-01 Cisco 4700 Series Application Control Engine Appliance Administration Guide 7-17