Command Line Reference Guide

Command
Modes
ROUTER BGP
Command
History
Version Description
9.2(1.0) Introduced on the Z9500.
8.2.1.0 Introduced on the E-Series ExaScale.
7.4.1.0 Introduced
Usage
Information
In non-deterministic mode, paths are compared in the order in which they arrive.
This method can lead to the system choosing different best paths from a set of
paths, depending on the order in which they are received from the neighbors
because MED may or may not get compared between adjacent paths. In
Deterministic mode (no bgp non-deterministic-med), the system compares
MED between adjacent paths within an AS group because all paths in the AS group
are from the same AS.
When you change the path selection from deterministic to non-deterministic, the
path selection for existing paths remains deterministic until you enter the clear
ip bgp command to clear existing paths.
bgp recursive-bgp-next-hop
Enable next-hop resolution through other routes learned by BGP.
Z9500
Syntax
bgp recursive-bgp-next-hop
To disable next-hop resolution, use the no bgp recursive-bgp-next-hop
command.
Defaults Enabled.
Command
Modes
ROUTER BGP
Command
History
Version Description
9.2(1.0) Introduced on the Z9500.
8.2.1.0 Introduced on the E-Series ExaScale.
7.4.1.0 Introduced
Usage
Information
This command is a knob to disable BGP next-hop resolution via BGP learned
routes. During the next-hop resolution, only the first route that the next-hop
resolves through is verified for the route’s protocol source and is checked if the
route is learned from BGP or not.
478
Border Gateway Protocol