Tony – Advertisement of the availability of an application is not within the scope of an IGP no matter what level of TLV you use to do so.
Existing capability advertisements (e.g., flex-algo participation, SR ) are indicators of what the IGP implementation supports and/or is configured to support. Not the same thing as what you are proposing here. Les From: Tony Li <[email protected]> On Behalf Of Tony Li Sent: Monday, January 24, 2022 12:12 PM To: Les Ginsberg (ginsberg) <[email protected]> Cc: lsr <[email protected]> Subject: Re: [Lsr] New Version Notification for draft-li-lsr-liveness-00.txt Les, My precedent is the use Router Capability for advertising FlexAlgo definitions. This is a service being provided by the area and it seems equally relevant. Would you prefer a top level TLV? [LES:] Flex Algo is a routing calculation being performed by the IGPs who also advertise the algorithm specific attributes and algorithm specific forwarding identifiers. I don’t see what you are doing as analogous. Well, IMHO, I can understand the participation of the router in an algo as a capability. The definition of the algo seems to be somewhat orthogonal. But it’s there anyway. Similarly, the capability of node liveness is pretty clear. Yes, the service access point information is orthogonal. You didn’t respond: Would you prefer a top level TLV? That would the logical alternative. Tony
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