Setting the Maximum Number of Equal-Cost Multipaths

You can use the maximum-paths command to specify the number of equal-cost paths to the same destination that BGP can submit to the IP routing table.

If you set the value to 1, the router installs the single best route in the IP routing table. If you set the value greater than 1, the router installs that number of parallel routes.

maximum-paths

• Use to set the maximum number of equal-cost multipaths.
• Specify a value in the range 1–16; the default value is 1.
• If you do not specify a keyword, the maximum number applies only to routes learned from external peers. If you specify the ibgp keyword, the maximum number applies only to routes received from internal peers. If you specify the eibgp keyword (valid only for VRF IPv4 unicast or IPv6 unicast address families), the maximum number applies to routes received from internal peers and external peers.
• This command takes effect immediately; it does not bounce the session.
• You can specify the maximum number of equal-cost multipaths in the context of the virtual router, an IPv4 unicast or IPv6 unicast address family, or a VRF specified in the context of an IPv4 unicast or IPv6 unicast address family.
• This command is not supported for VPNv4 or VPNv6 address families.
• Example 1

  host1(config-router)#maximum-paths 3

• Example 2

  host1:vr1(config-router-af)#maximum-paths ibgp 5

• Use the no version to restore the default value, 1.
• See maximum-paths.

Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice.