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flesh out acee and l3dl/lsoe a bit more

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Randy Bush 2020-05-25 20:25:05 -07:00
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draft-ymbk-bgp-discovery-layers.txt
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@ -194,11 +194,17 @@ Internet-Draft Trade-offs in BGP Peer Discovery May 2020
[I-D.acee-idr-lldp-peer-discovery] describes how to use the LLDP IETF
Organizationally Specific TLV to augment the LLDP TLV set to
transport BGP Config Sub-TLVs signaling AFI, IP address (IPv4 or
IPv6), Local ASs, Local BGP Identifier (aka, BGP Router ID), Session
Group-ID, BGP [Authentication] Session Capabilities, and Local
Address (Next Hop). Which iof these are really necessary could be
discussed.
transport BGP Config Sub-TLVs signaling
o AFI,
o IP address (IPv4 or IPv6),
o Local ASs,
o Local BGP Identifier (AKA, BGP Router ID),
o Session Group-ID,
o BGP [Authentication] Session Capabilities, and
o Local Address (Next Hop).
Which of these are really necessary could be discussed.
7.2. Layer-3 Discovery Protocol (L3dl)
@ -208,16 +214,10 @@ Internet-Draft Trade-offs in BGP Peer Discovery May 2020
abilities, and link liveness which may then be disseminated using
BGP-SPF and similar protocols.
This is similar but not quite the sane as the needs of this IDR
Design Team. E.g., the result is likely more complex than is needed.
A week's work could customize the design for the IDR Design Team's
needs. But ...
Unlike LLDP, L3DL has only one implementation and is not widely
deployed.
L3DL Upper Layer Protocol Configuration, [I-D.ymbk-lsvr-l3dl-ulpc],
details signaling the minimal set of parameters needed to start a BGP
session with a discovered peer. Details such as loopback peering are
handled by attributes in the L3DL protocol itself.
@ -226,6 +226,19 @@ Bush Expires November 26, 2020 [Page 4]
Internet-Draft Trade-offs in BGP Peer Discovery May 2020
o AS number,
o IP address, IPv4 or IPv6, and
o BGP Authentication.
This is similar but not quite the sane as the needs of this IDR
Design Team. E.g., L3DL is designed to meet more complex needs.
L3DL's reedecesor, LSOE, [I-D.ymbk-lsvr-lsoe], was simpler and might
be a better candidate for adaptation. A week's work could customize
the design for the IDR Design Team's needs. But ...
Unlike LLDP, L3DL has only one implementation, and LSOE only one open
source implementation, and neither is significantly deployed.
8. Discovery at Layer Three
Discovery at Layer-3 can assume IP addressability, though the IP
@ -262,6 +275,13 @@ Internet-Draft Trade-offs in BGP Peer Discovery May 2020
Rendezvous approaches may appeal to deployments which favor a central
control framework.
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Internet-Draft Trade-offs in BGP Peer Discovery May 2020
On the other hand, those who favor distributed protocols will have
the classic worries about fragility, redundancy, reliability, etc.
@ -273,15 +293,6 @@ Internet-Draft Trade-offs in BGP Peer Discovery May 2020
The IDR BGP Discovery Design Team.
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Internet-Draft Trade-offs in BGP Peer Discovery May 2020
12. IANA Considerations
None
@ -299,6 +310,16 @@ Internet-Draft Trade-offs in BGP Peer Discovery May 2020
and Liveness", draft-ietf-lsvr-l3dl-04 (work in progress),
May 2020.
[I-D.ymbk-lsvr-l3dl-ulpc]
Bush, R. and K. Patel, "L3DL Upper Layer Protocol
Configuration", draft-ymbk-lsvr-l3dl-ulpc-03 (work in
progress), May 2020.
[I-D.ymbk-lsvr-lsoe]
Bush, R., Austein, R., and K. Patel, "Link State Over
Ethernet", draft-ymbk-lsvr-lsoe-03 (work in progress),
November 2018.
[RFC6830] Farinacci, D., Fuller, V., Meyer, D., and D. Lewis, "The
Locator/ID Separation Protocol (LISP)", RFC 6830,
DOI 10.17487/RFC6830, January 2013,
@ -308,6 +329,15 @@ Appendix A. Acknowledgements
The authors wish to thank .
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Author's Address
Randy Bush
@ -333,4 +363,30 @@ Author's Address
Bush Expires November 26, 2020 [Page 6]
Bush Expires November 26, 2020 [Page 7]