Reference Guide

Usage
Information
This command is a knob to disable BGP next-hop resolution using 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.
The clear ip bgp command is required for this command to take effect and to keep the BGP
database consistent. Execute the clear ip bgp command right after executing this command.
Related
Commands
● clear ip bgp — clear the ip bgp.
bgp redistribute-internal
Redistribute internal Border Gateway Protocol (iBGP) routes into and IGP such as OSPF and IS-IS.
Syntax
bgp redistribute-internal
To disable iBGP redistribution, use the no bgp redistribute-internal command.
Defaults Not configured.
Command Modes
● ROUTER BGP
● ROUTER BGP-address-family
● ROUTER BGP-address-family-IPv6
● IPv4 VRF mode
● IPv6 Unicast VRF mode
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.14(0.1) Introduced on the S3048–ON, S4048–ON, S4048T-ON, S6010–ON, and Z9100–
ON.
Usage
Information
After configuring the bgp redistribute-internal command, use the clear ip bgp *
command to clear all BGP sessions. If you don’t clear all BGP sessions, route redistribution happens
only for new routes.
NOTE: When you enable redistribution of iBGP routes into an IGP, ensure that you use route maps
to control what prefixes are redistributed. Redistributing all iBGP routes can create a loop in the
network.
Example
Router(config)# router ospf 10
Router(config-router_ospf)# redistribute bgp 10 route-map bgp_2_ospf
Router(config-router_ospf)# exit
DellEMC(conf)# router bgp 10
DellEMC(conf-router_bgp)# bgp redistribute-internal
Caution: Might cause routing loops; please use prefix-list to restrict
the prefixes
Router(config-router_bgp)# end
Router# clear ip bgp
bgp regex-eval-optz-disable
Disables the Regex Performance engine that optimizes complex regular expression with BGP.
Syntax
bgp regex-eval-optz-disable
To re-enable optimization engine, use the no bgp regex-eval-optz-disable command.
Defaults Enabled
Command Modes ROUTER BGP (conf-router_bgp)
Border Gateway Protocol 347