Before you Begin

Before you begin, consider your hardware and configuration. Are all backup routers able to handle the traffic they will receive if the master fails? Will you implement load-sharing?

There are two global settings for VRRP as described in the following table.

Table 8 Global VRRP Settings

ParameterDescription

Accept Connections to VRRP IPs The VRRP protocol specifies NOT to accept or respond to IP packets destined to an adopted VRRP IP address. This option overrides this behavior and allows accept and response to IP packets destined to an adopted VRRP IP address. This feature enhances interaction with network management tools and enables failure detection. You must use this option when deploying highly available applications whose service is tied to a VRRP IP address.

 

Options: Disabled / Enabled.

 

Disabled specifies compliance with the VRRP protocol specification not to accept or

 

respond to IP packets destined to an adopted VRRP IP address.

 

Enabled overrides the VRRP protocol specification allowing accept and respond to

 

IP packets destined to an adopted VRRP IP address.

 

Default: Disabled.

Monitor Firewall State

This option allows VRRP to monitor Firewall State. This replaces cold-start delay of

 

previous releases.

 

Nokia recommends that you do not disable the Monitor Firewall State option when

 

running a firewall on a security platform. If you change the setting for Monitor Firewall

 

State from enabled (the default) to disabled, VRRP negotiation for master state might

 

start before the firewall is completely started. This can result in both VRRP nodes

 

assuming the master state while the firewall processes are starting.

 

Options: Disabled / Enabled.

 

Default: Enabled.

 

 

Plan values for the configuration parameters of each node, as described in the following table:

Table 9 VRRP Configuration Parameters

Parameter

Description

 

 

VRID

Range is 1 to 255; there is no default.

 

Choose a numbering scheme for your virtual routers that will make sense to other people. For example,

 

you might choose VRIDs that are the last octet of the backup address, such as 5 if the backup address

 

is 192.168.2.5.

Priority

Range is 1 to 254; default is 100.

 

Set the priority to 254 for least one platform in each VRID and choose values on the higher end of the

 

scale for the backups. This provides a faster transition in the event of a failure.

 

Decide whether you want an established master or equivalent priority for all or several routers.

 

For more information, see “Priority”.

 

 

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Nokia IPSO 4.0 manual Before you Begin, Global Vrrp Settings, Vrrp Configuration Parameters