Hi, � You can take a look at https://bird.network.cz/?get_doc <https://bird.network.cz/?get_doc&v=20&f=bird-5.html#ss5.2> &v=20&f=bird-5.html#ss5.2, the pair/ec/lc set is for bgp_community/bgp_ext_community/bgp_large_community. � 6509:4804 is written as a pair of number, (6509,4804), in BIRD. In your example, you can write `bgp_community ~ [(6509,4809), (6509,4810)]` to match any one of them. You can also use a range interval like `bgp_community ~ [(6509, 4809..4810)]`. � Regards, Soha � From: Bird-users <bird-users-bounces@network.cz> On Behalf Of skanda Sent: Thursday, May 9, 2024 1:29 PM To: bird-users@network.cz Subject: community matching � Hi Bird experts, � If I want match two communities, how does the syntax works in bird ? � standard communities to matched 6509:4804 and 6509:4810 � Is it like this � What are the pair inside the brackets means? � Or � filter labips { if (([(65001,4809, 4810)] ~ bgp_community) then accept } �