DELL 9.8(0.0) User Manual

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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
 — clears the ip bgp.
bgp regex-eval-optz-disable
Disables the Regex Performance engine that optimizes complex regular expression with BGP.
S4820T
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)
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
9.7(0.0)
Introduced on the S6000–ON.
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.
7.6.1.0
Introduced
Usage 
Information
BGP uses regular expressions (regex) to filter route information. In particular, the 
use of regular expressions to filter routes based on AS-PATHs and communities is 
common. In a large-scale configuration, filtering millions of routes based on 
Border Gateway Protocol
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