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    Configuring Router Discovery (NSM Procedure)

    Router discovery uses Internet Control Message Protocol (ICMP) router advertisements and router solicitation messages to allow a host to discover the addresses of operational routers on the subnet. Hosts must discover routers before they can send IP datagrams outside their subnet. Router discovery allows a host to discover the addresses of operational routers on the subnet.

    To configure router discovery:

    1. In the NSM navigation tree, select Device Manager > Devices.
    2. Click the Device Tree tab, and then double-click the device for which you want to configure router discovery.
    3. Click the Configuration tab. In the configuration tree, select Protocols > Router Discovery.
    4. Enter a descriptive comment for the router discovery in Comment.
    5. Select Disable to disable router discovery.
    6. Click one:
      • OK—Saves the changes.
      • Cancel—Cancels the modifications.
      • Apply—Applies the router discovery parameters.

    Table 1: Router Discovery Configuration Details

    Option

    Function

    Your Action

    Router Discovery > Address

    Name

    Specifies the Internet Protocol (IP) addresses to include in router advertisements.

    Enter the IP address name.

    Comment

    Supplies a descriptive comment for the router discovery address.

    (Optional) Enter a comment.

    Advertise

    Specifies to advertise the IP address.

    Select the check box to enable this feature.

    Ignore

    Specifies not to advertise the IP address.

    Select the check box to enable this feature.

    Broadcast

    Specifies to include IP address only in broadcast advertisements.

    Select the check box to enable this feature.

    Multicast

    Specifies to include IP address only in multicast advertisements.

    Select the check box to enable this feature.

    Ineligible

    Specifies that the IP address can never become a default router.

    Select the check box to enable this feature.

    Priority

    Specifies the preference of the IP address to become a default router.

    Enter the preference level. Range vary from -2,147,483,648 through 2,147,483,648.

    Router Discovery > Interface

    Name

    Specifies the interface name.

    Enter the interface name.

    Comment

    Supplies a descriptive comment for the router discovery interface.

    (Optional) Enter a comment.

    Max Advertisement Interval

    Specifies the maximum time before sending advertisements.

    Enter the maximum advertisement interval time. Range vary from 4 through 1,800.

    Min Advertisement Interval

    Specifies the minimum time before sending advertisements.

    Enter the minimum advertisement interval time. Range vary from 3 through 1,800.

    Lifetime

    Specifies how long the addresses in advertisements are valid.

    Enter the time duration until the addresses in advertisements are valid. Range vary from 3 through 9,000.

    Router Discovery > Traceoptions

    Comment

    Supplies a descriptive comment for the traceoption.

    (Optional) Enter a comment.

    Router Discovery > Traceoptions > File

    Comment

    Supplies a descriptive comment for the file traceoption.

    (Optional) Enter a comment.

    Filename

    Specifies the name of file in which to write trace information.

    Enter the filename.

    Size

    Specifies the maximum trace file size.

    Enter the maximum trace file size.

    Files

    Specifies the maximum number of trace files.

    Enter the maximum number of trace files.

    world-readable / no-world-readable

    Specifies file restriction access. no-world-readable—restricts file access to owner. world-readable—enables unrestricted file access.

    Select an option.

    Router Discovery > Traceoptions > Flag

    Name

    Specifies the flag traceoption name.

    Enter a flag traceoption name.

    Comment

    Supplies a descriptive comment for the flag traceoption.

    (Optional) Enter a comment.

    Published: 2013-01-06