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Configuring BGP Sessions (J-Web Procedure)

You can use the J-Web interface to create BGP peering sessions on a routing device.

Note: To configure BGP sessions, you must have a license for BGP installed on the EX Series switch.

To configure a BGP peering session:

  1. Select Configure > Routing > BGP.

    Note: After you make changes to the configuration in this page, you must commit the changes for them to take effect. To commit all changes to the active configuration, select Commit Options > Commit. See Using the Commit Options to Commit Configuration Changes for details about all commit options.

  2. Click one:

    • Add—Adds a BGP group. Enter information into the configuration page as described in Table 1.
    • Edit—Modifies an existing BGP group. Enter information into the configuration page as described in Table 1.
    • Delete—Deletes an existing BGP group.
    • Disable—Disables BGP configuration.
  3. To modify BGP global settings, click Edit in the Global Information section. Enter information as described in Table 2.

Table 1: BGP Routing Configuration Summary

Field

Function

Your Action

General tab 

Group Type

Specifies whether the group is an internal BGP (IBGP) group or an external BGP (EBGP) group.

Select the option: Internal or External.

Group Name

Specifies the name for the group.

Type a new name or select and edit the name.

ASN

Sets the unique numeric identifier of the AS in which the routing device is configured.

Type the routing device’s 32-bit AS number, in dotted decimal notation.

If you enter an integer, the value is converted to a 32-bit equivalent. For example, if you enter 3, the value assigned to the AS is 0.0.0.3.

Preference

Specifies the degree of preference for an external route. The route with the highest local preference value is preferred.

Type or select and edit the value.

Cluster Id

Specifies the cluster identifier to be used by the route reflector cluster in an internal BGP group.

Type or select and edit the IPv6 or IPv4 address to be used as the identifier.

Description

Specifies the text description of the global, group, or neighbor configuration.

Type or select and edit the description.

Damping

Specifies whether route flap damping is enabled or not.

To enable route flap damping, select the check box.

To disable route flap damping do not select the check box.

Advertise Inactive Routes

Specifies whether BGP advertises the best route even if the routing table did not select it to be an active route.

To enable advertising inactive routes, select the check box.

To disable advertising inactive routes, do not select the check box.

Advertise Peer AS Routes

Specifies whether to disable the default behavior of suppressing AS routes.

To enable advertising peer AS routes, select the check box.

To disable advertising peer AS routes, do not select the check box.

Neighbors tab

Dynamic Neighbors

Configures a neighbor (peer).

Type the IPv4 address of the peer.

Static Neighbors

Configures the system’s peers statically.

To configure a static neighbor:

  1. Specify the IP address.
  2. Specify the address of the local end of a BGP session.
  3. Specify the degree of preference for an external route.
  4. Enter a description.
  5. Specify the hold-time value to use when negotiating a connection with the peer.
  6. Specify how long a route must be present in the routing table before it is exported to BGP. Use this time delay to help bundle routing updates.
  7. Select Passive if you do not want to send active open messages to the peer.
  8. Select the option to compare the AS path of an incoming advertised route with the AS number of the BGP peer under the group and replace all occurrences of the peer AS number in the AS path with its own AS number before advertising the route to the peer.
  9. Specify an import policy and export policy.
  10. Click OK.
Policies tab

Import Policy

Specifies one or more routing policies to routes being imported into the routing table from BGP.

Click Add to add an import policy. Select the policy and click OK.

Click Move up or Move down to move the selected policy up or down the list of policies.

Select the policy and click Remove.

Export Policy

Specifies one or more policies to routes being exported from the routing table into BGP.

Click Add to add an export policy. Select the policy and click OK.

Click Move up or Move down to move the selected policy up or down the list of policies.

Select the policy and click Remove.

Table 2: BGP Global Settings

FieldFunctionYour Action
General tab

Router ASN

Specifies the routing device’s AS number.

Type or select and edit the value.

Router Identifier

Specify the routing device’s IP address.

Type or select and edit the IP address.

BGP Status

Enables or disables BGP.

  • To enable BGP, select Enabled.
  • To disable BGP, select Disabled.

Description

Describes of the global, group, or neighbor configuration.

Type or select and edit the description.

Confederation Number

Specifies the routing device’s confederation AS number.

Type or select and edit the value.

Confederation Members

Specifies the AS numbers for the confederation members.

To add a member AS number, click Add and enter the number in the Member ASN box. Click OK.

To modify a confederation member’s AS number, select the member click Edit and, enter the number and click OK.

To delete a confederation member, select the member and click Remove.

Advance Options

You can configure the following:

  • Keep routes—Specifies whether routes learned from a BGP peer must be retained in the routing table even if they contain an AS number that was exported from the local AS.
  • TCP MSS—Configures the maximum segment size (MSS) for the TCP connection for BGP neighbors.
  • MTU Discovery—Select to configure MTU discovery.
  • Remove Private ASN—Select to have the local system strip private AS numbers from the AS path when advertising AS paths to remote systems.
  • Graceful Restart—Specifies the time period when the restart is expected to be complete. Specify the maximum time that stale routes are kept during restart.
  • Multihop—Configures the maximum time-to-live (TTL) value for the TTL in the IP header of BGP packets.
  • Authentication Type—Select the authentication algorithm: None, MD5, SHA1, AES.

Select All or None to configure Keep Routes.

Enter a value in the TCP MSS box.

Click to enable MTU Discovery.

Click to enable Remove Private ASN.

Enter the time period for a graceful restart and the maximum time that stale routes must be kept.

To configure Multihop, select Nexthop Change to allow unconnected third-party next hops. Enter a TTL value.

Select the authentication algorithm. If you select None, specify an authentication key (password).

Policies tab

Import Policy

Specifies one or more routing policies to routes being imported into the routing table from BGP.

Click Add to add an import policy.

Click Move up or Move down to move the selected policy up or down the list of policies.

Click Remove to remove an import policy.

Export Policy

Specifies one or more policies to routes being exported from the routing table into BGP.

Click Add to add an export policy.

Click Move up or Move down to move the selected policy up or down the list of policies.

Click Remove to remove an export policy.

Trace Options tab

File Name

Specifies the name of the file to receive the output of the tracing operation.

Type or select and edit the name.

Number of Files

Specifies the maximum number of trace files.

Type or select and edit the value.

File Size

Specifies the maximum size for each trace file.

Type or select and edit the value.

World Readable

Specifies whether the trace file can be read by any user or not.

Select True to allow any user to read the file.

Select False to disallow all users being able to read the file.

Flags

Specifies the tracing operation to perform.

Select a value from the list.


Published: 2010-05-03

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