Concept Guide

DellEMC(conf_router_bgp)# neighbor 10.10.10.1 remote-as 500
DellEMC(conf_router_bgp)# bgp default local-preference 150
DellEMC(conf_router_bgp)# exit
In the above example conguration, the default LOCAL_PREFERENCE value is changed to 150 for all the updates from AS 500 to AS 400.
The default value is 100.
To view the BGP conguration, use the show config command in CONFIGURATION ROUTER BGP mode or the show running-
config bgp command in EXEC Privilege mode.
Conguring the local System or a Dierent System to be the
Next Hop for BGP-Learned Routes
You can congure the local router or a dierent router as the next hop for BGP-learned routes.
To change how the NEXT_HOP attribute is used, enter the rst command. To view the BGP conguration, use the show config
command in CONFIGURATION ROUTER BGP mode or the show running-config bgp command in EXEC Privilege mode.
You can also use route maps to change this and other BGP attributes. For example, you can include the second command in a route map to
specify the next hop address.
• Disable next hop processing and congure the router (route reector) as the next hop for a BGP neighbor.
CONFIG-ROUTER-BGP mode
neighbor {ip-address | ipv6-address | peer-group-name} next-hop-self [all]
If you do not use the all keyword, the next hop of only eBGP-learned routes is updated by the route reector. If you use the all
keyword, the next hop of both eBGP- and iBGP-learned routes are updated by the route reector.
• Sets the next hop address.
CONFIG-ROUTE-MAP mode
set next-hop ip-address
If the set next-hop command is applied on the out-bound interface using a route map, it takes precedence over the neighbor
next-hop-self
command.
Changing the WEIGHT Attribute
To change how the WEIGHT attribute is used, enter the rst command. You can also use route maps to change this and other BGP
attributes. For example, you can include the second command in a route map to specify the next hop address.
• Assign a weight to the neighbor connection.
CONFIG-ROUTER-BGP mode
neighbor {ip-address | ipv6-address | peer-group-name} weight weight
weight: the range is from 0 to 65535. The default is 0.
• Sets weight for the route.
CONFIG-ROUTE-MAP mode
set weight weight
weight: the range is from 0 to 65535.
NOTE
: The weight assigned using the set weight command under route map conguration override the weight assigned
using the neighbor weight command.
Border Gateway Protocol (BGP) 225