VRF RD and RT

แชร์
ฝัง
  • เผยแพร่เมื่อ 22 ส.ค. 2024
  • Just like Vlan is logically segmenting a switch into multiple smaller broadcast domain
    VRF is virtual routing and forwarding which divides the single global routing table into multiple Virtual Routing Instances
    This is done to keep the customer traffic and routing table separate and unique
    Route Distinguisher (RD)
    ====================
    A Route Distinguisher (RD) separates routes (one VRF for each customer routing table) of one customer from another. RD is prepended to each route (64-bit identifier is prepended) within a VRF to identify which VPN the route belongs to. An RD is carried along with a route via MP-BGP when exchanging VPN routes with other PE routers.
    Route Target (RT)
    ==============
    Route Target is a 64-bit identifier used as part of MP-BGP attribute (extended community) to identify which route should be exported or imported to specific VPN. Whereas route distinguishers are used to maintain uniqueness among identical routes in different VRFs, route targets can be used to share routes among them. We can apply route targets to a VRF to control the import and export of routes.

ความคิดเห็น • 10