Route map is set by using match and set commands. match command specifies criteria what must be matched. It makes sense for me if I have got for instance these two type of configurations : Code: ip as-path access-list 15 permit _254$--->condition route-map STOP_TO_MYNETWORK deny 10 match as-path 15-------here match happened to predifined condition or Code: ip prefix-list DENY_TO_AREA seg 5 permit 132.1.0.0/16--->condition route-map WANT_TO_Prevent deny 10 match ip address prefix-list DENY_TO_AREA -------here match happened to predifined condition But I get confused with the one below : http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hirp_c/ch15/hroutma.htm Here I can not find predifined condition Code: route-map tag-filter deny 10 match tag 777,,,,there is no predifined condition to match !!!! route-map tag-filter permit 20 ! router ospf 1 router-id 10.0.0.2 log-adjacency-changes network 172.16.2.1 0.0.0.255 area 0 distribute-list route-map tag-filter in Any clarification ? Thanks.