Cisco Systems Customizing the EIGRP Hello Interval and Hold Time

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Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter30 Configuring EIGRP
Customizing EIGRP
If you choose out, the Routing process field becomes active. Choose the type of route to be filtered. You
can filter routes redistributed from static, connected, RIP, and OSPF routing processes. Filters that
specify a routing process filter those routes from updates sent on all interfaces.
Step9 Enter the OSPF process ID in the ID field.
Step10 Click the Interface radio button and choose the interface to which the filter applies.
Step11 Click Add or Edit to define an access list for the filter rule. Clicking Edit opens the Network Rule dialog
box for the selected network rule.
The Network Rule dialog box appears.
Step12 In the Action drop-down list, choose Permit to allow the specified network to be advertised; choose Deny
to prevent the specified network from being advertised.
Step13 In the IP Address field, type IP address of the network being permitted or denied. To permit or deny all
addresses, use the IP address 0.0.0.0 with a network mask of 0.0.0.0.
Step14 From the Netmask drop-down list, choose the network mask applied to the network IP address. You can
type a network mask into this field or select one of the common masks from the list.
Step15 Click OK.
Customizing the EIGRP Hello Interval and Hold Time
The ASA periodically sends hello packets to discover neighbors and to learn when neighbors become
unreachable or inoperative. By default, hello packets are sent every 5 seconds.
The hello packet advertises the ASA hold time. The hold time indicates to EIGRP neighbors the length
of time the neighbor should consider the ASA reachable. If the neighbor does not receive a hello packet
within the advertised hold time, then the ASA is considered unreachable. By default, the advertised hold
time is 15 seconds (three times the hello interval).
Both the hello interval and the advertised hold time are configured on a per-interface basis. We
recommend setting the hold time to be at minimum three times the hello interval.
To configure the hello interval and advertised hold time, perform the following steps:
Step1 In the main ASDM window, choose Configuration > Device Setup > Routing > EIGRP > Setup.
The EIGRP Setup pane appears.
Step2 Check the Enable EIGRP routing check box.
Step3 Click OK.
Step4 Choose Configuration > Device Setup > Routing > EIGRP > Interfaces.
The Interface pane appears and displays all of the EIGRP interface configurations.
Step5 Double-click an interface entry or choose the entry and click Edit.
The Edit EIGRP Interface Entry dialog box appears.
Step6 Choose the EIGRP AS number from the drop-down list, which is populated from system numbers that
were set up when you enabled the EIGRP routing process.
Step7 In the Hello Interval field, enter the interval between EIGRP hello packets sent on an interface.
Valid values range from 1 to 65535 seconds. The default value is 5 seconds.