OS10 Enterprise Edition User Guide Release 10.4.1.0

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Local preference attribute

You can change the value of the LOCAL_PREFERENCE attributes for all routes the router receives. To change the LOCAL_PREF value in ROUTER-BGP mode from 0 to 4294967295 with default 100, use the default local preference value command.

To view the BGP configuration, use the show running-configuration command. A more flexible method for manipulating the LOCAL_PREF attribute value is to use a route-map.

  1. Assign a name to a route map in CONFIGURATION mode.
    route-map 
                                           map-name {permit | deny | 
                                           sequence-number}
                                        
  2. Change the LOCAL_PREF value for routes meeting the criteria of this route map in ROUTE-MAP mode, then return to CONFIGURATION mode.
    set local-preference 
                                           value
                                           exit
                                        
  3. Enter ROUTER-BGP mode.
    router bgp 
                                           as-number
                                        
  4. Enter the neighbor to apply the route map configuration in ROUTER-BGP mode.
    neighbor {
                                           ip-address}
                                        
  5. Apply the route map to the neighbor’s incoming or outgoing routes in ROUTER-BGP-NEIGHBOR-AF mode.
    route-map 
                                           map-name {in | out)
                                        
  6. Enter the peer group to apply the route map configuration in ROUTER-BGP mode.
    template 
                                           template-name
                                        
  7. Apply the route map to the peer group’s incoming or outgoing routes in CONFIG-ROUTER-TEMPLATE-AF mode.
    route-map 
                                           map-name {in | out}
                                        

Configure and view local preference attribute

OS10(config)# route-map bgproutemap 1
                                 OS10(conf-route-map)# set local-preference 500
                                 OS10(conf-route-map)# exit
                                 OS10(config)# router bgp 10
                                 OS10(conf-router-bgp-10)# neighbor 10.1.1.4
                                 OS10(conf-router-neighbor)# address-family ipv4 unicast
                                 OS10(conf-router-bgp-neighbor-af)# route-map bgproutemap in
                              
OS10 configure terminal
                                    OS10(config)# route-map bgproutemap 1
                                    OS10(conf-route-map)# set local-preference 500
                                    OS10(conf-route-map)# exit
                                    OS10(config)# router bgp 64601
                                    OS10(conf-router-bgp-64601)# template bgppg
                                    OS10(conf-router-template)# address-family ipv4 unicast
                                    OS10(conf-router-bgp-template-af)# route-map bgproutemap in
                                 

View route-map

OS10(conf-route-map)# do show route-map 
                                 route-map bgproutemap, permit, sequence 1
                                 Match clauses:
                                 Set clauses:
                                 local-preference 500
                                 metric 400
                                 origin incomplete
                              

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