This method is not recomended and should only be used if other soft reset methods fail. We can use the following three methods to reset the BGP session.īy clearing the BGP sessions using this method, BGP process drops all the BGP peers and re-establishes the TCP session followed by Open message which makes the neighbor to send all the NLRIs again.
Using a hard reset to clear a BGP session causes cache invalidation and results in a negative impact on network.
Whenever there is a change in routing policy, the BGP session must be reset (cleared) for the new policy to take effect and the routing table to be configured. In the present scenario, we have to configure Anyconnect SSL remote access VPN for Sales department and Engineering department of a company.īGP Route Refresh and Soft-Reconfiguration for Inbound Policy Update. Lab test results: BGP peer is up and have received three prefixes from the BGP neighbor. Note: Without inout option soft will do a soft reset both ways. To do soft reset, command is: execute router clear bgp all soft (inout) For a specific BGP neighbor: execute router clear bgp ip soft x.x.x.x (inout) or execute router clear bgp ip x.x.x.x soft (inout) where x.x.x.x is BGP neighbor IP in: To refresh only received BGP routes.
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