RE: [RPRWG] A question on IP over RPR

["Devendra Tripathi" <tripathi@xxxxxxxxxxxxx>]

I am wondering, if the ring management should be left to RPR layer only. It is very similar to Link aggregation (802.3ad) which also provides fault tolerance.

Regards,
Devendra Tripathi
VidyaWeb (India) Pvt Ltd.
(Subsidiary of CoVisible Solutions Inc.)
Pune, India
Tel: +91-20-433-1362

-----Original Message-----
From: owner-stds-802-17@xxxxxxxxxxxxxxxxxx [mailto:owner-stds-802-17@xxxxxxxxxxxxxxxxxx]On Behalf Of Jim Forster
Sent: Thursday, January 31, 2002 10:57 PM
To: lcwang@xxxxxxx; stds-802-17@xxxxxxxx
Subject: 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

-----Original Message-----
From: owner-stds-802-17@xxxxxxxxxxxxxxxxxx [mailto:owner-stds-802-17@xxxxxxxxxxxxxxxxxx]On Behalf Of lcwang@xxxxxxx
Sent: Thursday, January 31, 2002 1:12 AM
To: stds-802-17@xxxxxxxx
Subject: [RPRWG] A question on IP over RPR
Importance: High

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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