Administrator Guide
Usage Information
This feature is advertised to BGP neighbors through a capability advertisement. In Receiver Only mode, BGP saves
the advertised routes of peers that support this capability when they restart.
BGP graceful restart is active only when the neighbor becomes established. Otherwise it is disabled. Graceful-
restart applies to all neighbors with established adjacency.
This command automatically restarts the BGP instance for the conguration to take eect.
bgp non-deterministic-med
Compare MEDs of paths from dierent autonomous systems.
Syntax
bgp non-deterministic-med
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 dierent ASs do not have their MEDs compared).
Command Modes ROUTER BGP
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000–ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
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 to Dell
Networking OS choosing dierent 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), Dell Networking OS 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.
368 Border Gateway Protocol