How do you set up a route reflector in Juniper?
How do you set up a route reflector in Juniper?
Step-by-Step Procedure
- Configure the interfaces. [edit interfaces]
- Configure the BGP neighbor relationship with the route reflector. Also apply the policy that redistributes OSPF routes into BGP.
- Configure OSPF.
- Configure the policy that redistributes OSPF routes into BGP.
- Configure the router ID and the AS number.
What is the purpose of a route reflector?
The Role of Route Reflectors The purpose of route reflectors is to fix that problem. To do so, the route reflector simply instructs R3 that, when it receives an advertisement from an IBGP neighbor (in this case, R2), it should break the rule and advertise to the other members of the system.
Where do route reflectors go?
Route Reflector Placement From a topology perspective, the route-reflectors are best placed centrally. This helps to prevent sub-optimal routing. Regular BGP speakers may peer with Route Reflectors, or other non-RR’s. Ideally, it’s best to have all non-RR’s peering with route-reflectors.
What is the difference between route reflector and confederation?
You configure confederation ID (AS number to the external autonomous systems), router’s own sub-AS ID and peer sub-AS IDs on the routers. Peering Route reflectors are peered with each other in full-mesh. Within the cluster, the route reflector client only peers with route reflectors.
How does route reflector cluster work?
Route Reflector Cluster ID is a four-byte BGP attribute, and, by default, it is taken from the Route Reflector’s BGP router ID. If two routers share the same BGP cluster-ID, they belong to the same cluster. Before reflecting a route, route reflectors append its cluster ID to the cluster list.
What is a virtual route reflector?
The virtual Route Reflector (vRR) feature allows you to implement route reflector capability using a general purpose virtual machine that can be run on a 64-bit Intel-based blade server or appliance. Because a route reflector works in the control plane, it can run in a virtualized environment.
How do you set route reflectors?
Configuring the Route Reflector
- Configure the interfaces.
- Configure BGP, including the cluster identifier and neighbor relationships with all IBGP-enabled devices in the autonomous system (AS).
- Configure static routing or an interior gateway protocol (IGP).
- Configure the policy that redistributes OSPF routes into BGP.
Does route reflector come in actual path during traffic forwarding?
The route reflectors do not need to MPLS (LDP is not activated), as they are not in the forwarding path. Nor do they have any VRFs configured.
What is Route Reflector synchronization?
The Route Reflector performs route synchronization between all Route Reflector Clients so that the actual data path routing can occur. A Route Reflector does not provide services for the RAS Gateway upon which it is configured.
What is a BGP confederation?
A BGP confederation is an alternative method to route reflectors, used to reduce the number of BGP peerings within a single AS. Furthermore it is a single AS that has been subdivided into a number of internal sub-AS’s, yet still, advertise as a single AS to external peers .
