Dell PowerSwitch S5212F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 438

MED Route flap dampening parameters Timers Add-path 0 • half-life = 15 minutes • max-suppress-time = 60 minutes • reuse = 750 • suppress = 2000 • keepalive = 60 seconds • holdtime = 180 seconds Disabled Enable BGP Before enabling BGP, assign a BGP router ID to the switch using the following command: • In the ROUTER BGP mode, enter the router-id ip-address command. Where in, ip-address is the IP address corresponding to a configured L3 interface (physical, loopback, or LAG). BGP is disabled by default. The system supports one AS number - you must assign an AS number to your device. To establish BGP sessions and route traffic, configure at least one BGP neighbor or peer. In BGP, routers with an established TCP connection are called neighbors or peers. After a connection establishes, the neighbors exchange full BGP routing tables with incremental updates afterward. Neighbors also exchange the KEEPALIVE messages to maintain the connection. You can classify BGP neighbor routers or peers as internal or external. Connect EBGP peers directly, unless you enable EBGP multihop - IBGP peers do not need direct connection. The IP address of an EBGP neighbor is usually the IP address of the interface directly connected to the router. The BGP process first determines if all internal BGP peers are reachable, then it determines which peers outside the AS are reachable. 1 Assign an AS number, and enter ROUTER-BGP mode from CONFIGURATION mode, from 1 to 65535 for 2-byte, 1 to 4294967295 for 4-byte. Only one AS number is supported per system. If you enter a 4-byte AS number, 4-byte AS support is enabled automatically. router bgp as-number 2 Enter a neighbor in ROUTER-BGP mode. neighbor ip-address 3 Add a remote AS in ROUTER-NEIGHBOR mode, from 1 to 65535 for 2-byte or 1 to 4294967295 for 4-byte. remote-as as-number 4 Enable the BGP neighbor in ROUTER-NEIGHBOR mode. no shutdown 5 (Optional) Add a description text for the neighbor in ROUTER-NEIGHBOR mode. description text To reset the configuration when you change the configuration of a BGP neighbor, use the clear ip bgp * command. To view the BGP status, use the show ip bgp summary command. Configure BGP OS10# configure terminal OS10(config)# router bgp 100 OS10(config-router-bgp-100)# neighbor 5.1.1.1 OS10(config-router-neighbor)# remote-as 1 OS10(config-router-neighbor)# no shutdown OS10(config-router-neighbor)# description n1_abcd OS10(config-router-neighbor)# exit 438 Layer 3