[Idr] [OSPFv3-SR] Regarding LAN Adj-SID/Label description
Veerendranatha Reddy Vallem <veerendranatharv@huawei.com> Mon, 28 November 2016 08:36 UTC
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From: Veerendranatha Reddy Vallem <veerendranatharv@huawei.com>
To: "draft-ietf-ospf-ospfv3-segment-routing-extensions@ietf.org" <draft-ietf-ospf-ospfv3-segment-routing-extensions@ietf.org>
Thread-Topic: [OSPFv3-SR] Regarding LAN Adj-SID/Label description
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Date: Mon, 28 Nov 2016 08:35:58 +0000
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Subject: [Idr] [OSPFv3-SR] Regarding LAN Adj-SID/Label description
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Dear Authors,
As per draft, for LAN SID Sub-TLV,
7.2. LAN Adj-SID Sub-TLV
The LAN Adj-SID is an optional Sub-TLV of the Router-Link TLV. It
MAY appear multiple times in the Router-Link TLV. It is used to
advertise a SID/Label for an adjacency to a non-DR neighbor on a
broadcast or NBMA network.
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Flags | Weight | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Neighbor ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SID/Label/Index (variable) |
+---------------------------------------------------------------+
"LAN SID is used for non-DR neighbors." We cannot use this Sub TLV to provide SID for DR router (Neighbor ID is DR's router id in this TLV) ?
It means we need to include "Adj_SID Sub TLV for DR neighbor" and LAN Adj-SID for other neighbors (including BDR) in the network while advertising Adj- SID in Router Link TLV for LAN?
Can you please provide clarity for this sub TLV.
Regards,
Veerendranath
- [Idr] [OSPFv3-SR] Regarding LAN Adj-SID/Label des… Veerendranatha Reddy Vallem