Hi all,
Thank you for introducing this very useful draft.
Few comments:
#1
1. Introduction
For a given prefix, multiple paths with different path status, e.g.,
the "best-path", the "best-external-path" and so on, may co-exist in
the BGP module upon the local policy processing. In addition, during
....
[Shunwan] How to convey multiple paths from BMP Client to BMP Server?
I did not see a description of the relevant mechanism in this draft.
#2
2.1. Path Type
+--------+----------------------+
| Value | Path type |
+-------------------------------+
| 0x0000 | Unknown |
| 0x0001 | Best path |
| 0x0002 | Best external path |
| 0x0004 | Primary path |
| 0x0008 | Backup path |
| 0x0010 | Non-installed path |
| 0x0020 | Unreachable next-hop |
+--------+----------------------+
Table 1: Path Type
[Shunwan]
Since Path Type has 4 octets space, The Value in above table should be in
4-octet-style.
Regarding "Unreachable next-hop", if I understand correctly, should it be
"Unreachable NLRI" ?
Thanks,
Shunwan
-----Original Message-----
From: GROW [mailto:[email protected]] On Behalf Of Camilo Cardona
Sent: Saturday, July 06, 2019 11:04 AM
To: [email protected] [email protected] <[email protected]>
Cc: [email protected]
Subject: [GROW] Path marking using BMP - TLVs
Hello GROW,
We just submitted draft
https://www.ietf.org/id/draft-cppy-grow-bmp-path-marking-tlv-00.txt. The idea
of the draft is to signal the state of the path in the FIB using the mechanism
described in draft-lucente-bmp-tlv-00
(https://www.ietf.org/id/draft-lucente-bmp-tlv-00.txt), which was introduced
this week.
Feedback is, as always, welcome.
If possible, we would like to have a couple of minutes to present it in
Montreal (probably better if done next to the presentation of
draft-lucente-bmp-tlv-00).
A good part of this document was inspired by other draft,
https://tools.ietf.org/html/draft-bgp-path-marking-00, that we proposed some
years ago. In that draft, similar information was signaled using communities.
Back then, there were some concerns of this data potentially messing with the
BGP decision process, something that should not be a problem when using BMP.
Thanks,
Camilo Cardona
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