Administrator Guide

Version Description
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
7.2.1.0 Introduced.
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
358 Border Gateway Protocol