Cisco Cisco IOS Software Release 12.0(22)S
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Cisco IOS Release 12.0(22)S
BGP Soft Reset Enhancement
Feature History
This document describes the BGP Soft Reset Enhancement feature in Cisco IOS Release 12.0(22)S and
includes the following sections:
includes the following sections:
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Feature Overview
The BGP Soft Reset Enhancement feature provides automatic support for dynamic soft reset of inbound BGP
routing table updates that are not dependent upon stored routing table update information. This method
requires no preconfiguration (as with the
routing table updates that are not dependent upon stored routing table update information. This method
requires no preconfiguration (as with the
memory than the previous soft reset method for inbound routing table updates.
Configurable routing policies for a peer, including route-maps, distribute-lists, prefix-lists, and
filter-lists, may impact inbound or outbound routing table updates. Whenever there is a change in the
routing policy, the BGP session must be cleared or reset for the new policy to take effect. The two
methods for resetting a BGP session are hard reset and soft reset.
filter-lists, may impact inbound or outbound routing table updates. Whenever there is a change in the
routing policy, the BGP session must be cleared or reset for the new policy to take effect. The two
methods for resetting a BGP session are hard reset and soft reset.
Clearing a BGP session using a hard reset invalidates the cache and results in a negative impact on the
network performance when the information in the cache becomes unavailable. A hard reset is also
disruptive because active BGP sessions are torn down.
network performance when the information in the cache becomes unavailable. A hard reset is also
disruptive because active BGP sessions are torn down.
Release
Modification
12.0(7)T
This feature was introduced.
12.0(2)S
This feature was integrated into Cisco IOS Release 12.0(2)S.
12.0(22)S
Support for IPv6 and VPNv4 address family support was added.