Administrator Guide

To return to the default, use the no bgp non-deterministic-med command.
Defaults Disabled (that is, paths/routes for the same destination but from different ASs do not have their MEDs
compared).
Command Modes ROUTER BGP
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
Usage Information
In Non-Deterministic mode, paths are compared in the order in which they arrive. This method can lead the
system to choose 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 the existing
paths remains Deterministic until you enter the clear ip bgp command to clear existing paths.
bgp outbound-optimization
Enables outbound optimization for IBGP peer-group members.
Syntax
bgp outbound-optimization
To disable outbound optimization, enter the no bgp outbound-optimization command.
Defaults Enabled.
Command Modes ROUTER BGP
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.4.(0.0) Introduced on the S4810.
9.2(1.0) Introduced on the Z9500.
Usage Information
The updates are sent to all the neighbors in the peer-group and all the neighbors have the same attributes
including next-hop.
Enabling or disabling outbound optimization dynamically resets all neighbor sessions.
When you enable outbound optimization, all peers receive the same update packets. Also, the next-hop address,
which is chosen as one of the addresses of the neighbor's reachable interface, is the same for all peers.
Border Gateway Protocol 323