Technical Documentation

Configuring BGP (NSM Procedure)

Border Gateway Protocol (BGP) is used for exchanging routing information between gateway hosts/internet service providers. The routing information refers to the routing tables containing information about the list of known devices, the addresses they can reach, and a cost metric associated with the path to each device so that the best available route is chosen. The primary function of a BGP speaking system is to exchange network reachability information with other BGP systems. This feature enables you to configure BGP peering sessions.

To configure BGP in NSM:

  1. In the navigation tree select Device Manager > Devices and select the device from the list.
  2. In the configuration tree, expand Protocols.
  3. Select BGP.
  4. Add/Modify the parameters under the respective tabs as specified in Table 1.
  5. Click one:
    • OK—To save the changes.
    • Cancel—To cancel the modifications.
    • Apply — To apply the protocol settings.

Note: After you make changes to a device configuration, you must push that updated device configuration to the physical security device for those changes to take effect. You can update multiple devices at one time. See Updating Devices for more information.

Table 1: BGP Configuration Fields

Field

Function

Your Action

General

The general parameters to be set up for applying BGP.
  1. Expand the Protocol tree.
  2. Select BGP and select General tab.
  3. Specify the general parameters like comment, description, local address, hold time, etc.

Path Selection

Enables you to specify the path selection criteria.
  1. Expand the Protocol tree.
  2. Select BGP and select Path Selection tab.
  3. Set up the path selection parameters and med plus IGP.

Traceoptions

Defines trace options for IGMP snooping.
  1. Expand the Protocol tree.
  2. Select BGP and select Traceoptions tab.
  3. Set up the file and flag parameters.

Metric Out

Enables you to specify the metric value to add to the routes transmitted to the neighbor.

  1. Expand the Protocol tree.
  2. Select BGP and select Metric Out tab.
  3. Set up the metric value and minimum IGP.

Multihop

If an EBGP peer is more than one hop away from the local router, you must specify the next hop to the peer so that the two systems can establish a BGP session. This type of session is called a multihop BGP session.

  1. Expand the Protocol tree.
  2. Select BGP and select Multihop tab.
  3. Set up the comment, Ttl and specify whether the next hop has to be changed.

Advertise

Enables you to specify whether BGP should advertise the best route even if the routing table did not select it to be an active route.

  1. Expand the Protocol tree.
  2. Select BGP and select Advertise tab.
  3. Specify whether Advertise has to be inactivated and set up the Advertise Peer As.

Import

Enables you to apply one or more routing policies to routes being imported into the JUNOS routing table from BGP .

  1. Expand the Protocol tree.
  2. Select BGP and select Import tab.
  3. Specify the export policies configured on the peer.

Family

Enables you to configure protocol family information for the logical interface.

  1. Expand the Protocol tree.
  2. Select BGP and select Family tab.
  3. Specify the Family and Inet parameters.
  4. Expand the Inet tree and set up the parameters.

Authentication Settings

Enables you to specify the authentication settings for BGP.

  1. Expand the Protocol tree.
  2. Select BGP and select Authentication Settings tab.
  3. Specify the authentication key, algorithm and key chain.

Export

Enables you to apply one or more routing policies to routes being exported from the JUNOS routing table from BGP .

  1. Expand the Protocol tree.
  2. Select BGP and select Export tab.
  3. Specify the export policies configured on the peer.

Local As

Enables you to configure BGP with a different local autonomous session (AS) number for each BGP session

  1. Expand the Protocol tree.
  2. Select BGP and select Local As tab.
  3. Enter the comment, as number, loop and specify whether it is private.

Graceful Restart

Enables you to specify the graceful restart parameters.
  1. Expand the Protocol tree.
  2. Select BGP and select Graceful Restart tab.
  3. Specify the graceful restart parameters.

Bfd Liveness Detection

Enables you to configure bidirectional forwarding detection (BFD) timers.

  1. Expand the Protocol tree.
  2. Select BGP and select Bfd Liveness Detection tab.
  3. Specify the Bfd Liveness Detection parameters, Detection Time and Transmit Interval.

Group

Enables you to configure BGP group.
  1. Expand the Protocol tree.
  2. Select BGP and select Group tab.
  3. Click the New button or select a group and click Edit button.
  4. Enter all the group parameters.

Published: 2009-08-23