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RE: [RPRWG] Topology Discovery Timer.

Title: Ring Selection using ARP
 
Clearly, each node needs to quickly recognize (within a few ms) that a neighbor has gone away.
This could be done by looking for interrupts from the PHY, but that may not be considered PHY agnostic.
 
In addition, I the RPR protocol could greatly benefit from a topology and capabilities discovery protocol.  For example, in 802.5 there was a MAC frame that allowed one adapter to query another adapter's ring state.  This was implemented in microcode on the adapter; even in the system's OS was hung, the adapter could still be queried.  This is a valuable little trick.
 
 

Ray Zeisz
Technology Advisor
LVL7 Systems
http://www.LVL7.com
(919) 865-2735


-----Original Message-----
From: Anjan Kumar HG [mailto:AnjanHG@xxxxxxxxxxxxx]
Sent: Friday, May 04, 2001 1:44 AM
To: IEEE 802. 17 Group (E-mail)
Subject: [RPRWG] Topology Discovery Timer.

Hi all,
 
    I think there are two implementation to send Topology Discovery packet on the ring.  One implemenation is "periodical" and another "need basis" (Ex: wrap detection)
 
    Should we implement both?  How do you think about this?
 
Regards,
Anjan.