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### Instruction:
How to configure a community list?
### Response:
To configure a community list for BGP, use the 'community-set' command in global configuration mode. RP/0/RP0/CPU0:router(config)#community-set COMMUNITY_SET1
RP/0/RP0/CPU0:router(config-cset)#100:1
RP/0/RP0/CPU0:router(config-cset)#exit
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