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### Instruction:
What is the purpose of using BGP cost community in IOS XR?
### Response:
BGP cost community in IOS XR is used to influence the best path selection process without modifying the BGP attributes. route-policy SET-COST
set extcommunity cost community-igp 100
end-policy
router bgp 65000
address-family ipv4 unicast
neighbor 203.0.113.1
route-policy SET-COST in
commit
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