Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 194
Command example, Command Syntax, Command Mode, Purpose
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www.dell.com | support.dell.com Use the clear ip bgp command in EXEC Privilege mode at the system prompt to reset a BGP connection using BGP soft reconfiguration. Command Syntax Command Mode Purpose clear ip bgp {* | neighbor-address | AS Numbers | ipv4 | peer-group-name} [soft [in | out]] neighbor {ip-address | peer-group-name} soft-reconfiguration inbound EXEC Privilege Clear all information or only specific details. *: Clear all peers neighbor-address: Clear the neighbor with this IP address AS Numbers: Peers' AS numbers to be cleared ipv4: Clear information for IPv4 Address family peer-group-name: Clear all members of the specified peer group CONFIG-ROUTER-B Enable soft-reconfiguration for the BGP neighbor GP specified. BGP stores all the updates received by the neighbor but does not reset the peer-session. Entering this command starts the storage of updates, which is required to do inbound soft reconfiguration. Outbound BGP soft reconfiguration does not require inbound soft reconfiguration to be enabled. When soft-reconfiguration is enabled for a neighbor and the clear ip bgp soft in command is executed, the update database stored in the router is replayed and updates are reevaluated. With this command, the replay and update process is triggered only if route-refresh request is not negotiated with the peer. If the request is indeed negotiated (upon execution of clear ip bgp soft in), then BGP sends a route-refresh request to the neighbor and receives all of the peer's updates. To use soft reconfiguration, or soft reset, without preconfiguration, both BGP peers must support the soft route refresh capability, which is advertised in the open message sent when the peers establish a TCP session. To determine whether a BGP router supports this capability, use the show ip bgp neighbors command. If a router supports the route refresh capability, the following message should be displayed: Received route refresh capability from peer. If you specify a BGP peer group by using the peer-group-name argument, all members of the peer group inherit the characteristic configured with this command. The following (Figure 8-33) enables inbound soft reconfiguration for the neighbor 10.108.1.1. All updates received from this neighbor are stored unmodified, regardless of the inbound policy. When inbound soft reconfiguration is done later, the stored information is used to generate a new set of inbound updates. Figure 8-33. Command example: router bgp Force10>router bgp 100 neighbor 10.108.1.1 remote-as 200 neighbor 10.108.1.1 soft-reconfiguration inbound 194 | Border Gateway Protocol IPv4 (BGPv4)
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