RE: [RPRWG] A question on IP over RPR
Briefly, the L3 (IP) to L2 (RPR) binding is very similar to that on
Ethernet, with an extension. IP on Ethernet uses ARP to determine the MAC
address corresponding to the next-hop IP address. On RPR we need this but
we also need a direction bit, or Ring ID -- which Ring, Inner or Outer to
use. So ARP proceeds pretty much like on Ethernet to determine the
next-hop MAC address. Then RPR topology information is consulted to
determine which ring to use, and the result stored along with the IP-MAC address
binding information.
-- Jim
A question of IP
over RPR.
According to IP address, using routing protocol, a data
forwarding route can be selected. On the other hand, RPR may transfer data
through
its ring on both direction. How can consistency of L3 and L2 data
transfer be guaranteed?
Can someone explian this? Thanks.
Leo
Wang
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