D-Link DGS-3630 Emulator 1 - Page 190

DGS-3630 Layer 3 Stackable Managed Switch CLI Reference Guide Command Mode Router Configuration Mode. Command Default Level Level: 12. Usage Guideline MED is an attribute that is exchanged between of eBGP neighbors. MED is an attribute specified by a local peer, and advertised to the remote peer to affect the best path selection result in the remote peer. The remote peer will not pass the MED value with routes for further path advertisement. The lower MED value is preferred than the larger MED value. By default, MED 0 is assigned to a route if missing MED missing. Use the bgp bestpath med missing-as-worst command to configure the BGP router to assign a largest MED value to a route if missing MED. Example This example shows how to configure the BGP process 10000 to assign a largest MED value to a route if missing MED. Switch# configure terminal Switch(config)# router bgp 10000 Switch(config-router)# bgp bestpath med missing-as-worst Switch(config-router)# 13-13 bgp client-to-client reflection (MI and EI Mode Only) This command is used to enable route reflection from a BGP route reflector to clients. Use the no form of this command to disable client-to-client route reflection. bgp client-to-client reflection no bgp client-to-client reflection Parameters None. Default By default, this option is enabled. Command Mode Router Configuration Mode. Command Default Level Level: 12. Usage Guideline In a large scale BGP network, route reflection is a mechanism used to reduce the needs of fully mesh of iBGP sessions. With route reflection, an autonomous system can be partitioned into a number of clusters; each cluster is formed by the route reflector and its client. The connection between clusters is still fully meshed. However, in a cluster, the reflector needs to maintain connections with all clients, but the client does not need to maintain connections with other clients. The route reflector is responsible to reflect routes received from one client to other clients. 185