BGP inter-domain routing system each autonomous domain routing policy configuration problems indepen-CodePudding

BGP by setting various local priority attribute values of the path between the autonomous region of the configured routing strategy, local priority attribute values specify the path of the path selected priority in routing decisions, namely the attribute value, the greater the path in the routing decisions selected the higher priority, so may be due to different routing policy configuration by the routing between autonomous domain of convergence is also vary,

I'm using the quagga building A as shown in the diagram, is used to study autonomous domain. A, B, C, D to autonomous domain routing convergence situation of E, among them, the said autonomous domain string beside order set by the autonomous domain routing strategy, the optimal path of order
Such as: A hope of access path for ACE or AE, ACE priority than AE, similarly, B, C, D,
The question now is:

After I set the topology to control access to order before I think of way is to control weight, such as A - & gt; E weight set to 1000, A - & gt; B is set to 0, A - & gt; E set to 500, C - & gt; E set to 500, C - & gt; D set up 1000, but the problem is due to the weight is only local Settings, so the appeared ACDBE access sequence, apparently only use weight values are not enough, I also tried to use the as - path to filter the routing, such as for ACDBE the situation, use the

 
AS6101 (config) # IP as - path access - the list 1 deny _1102 $
AS6101 (config) # IP as - path access - the list 1 permit. * 
AS6101 (config) # route - the map test permit 10 
AS6101 (config - the route - map) # match the as - path 1 
AS6101 (config - the route - map) # router BGP 6101 
AS6101 (config - the router) # neighbor 192.168.6.102 route - the map test in 
AS6101 (config - the router) # end

My idea is in AS6101 direction configuration in the route - map filtering AS1102 routing, but still failed to reach a purpose,

Want to consult the autonomous domain routing strategy of autonomous configuration issues, such as how to control A routing table only ACE and AE, and can be set to control its priority,

Anyway, thank you!