Routing filter rules
In the direction of filter routing, link-state information cannot be filtered
, in the direction of routing, filtering for link-state routing protocols, just don't add the routing to the routing table
, filtering the routing, introduced from other agreements, only in the direction of filter, there is no point in the direction of

Question:
Routing filter can filter routing but not link-state information, here I got very confused, routing and link-state information exactly what relationship, routing is not contained in the link-state information? Learn me a face of meng,
And the last sentence "filtering the routing, introduced from other agreements, only in the direction of filter, there is no point in the direction", is what meaning,


Thank you teach!!!!!!