Hi Brain,
Thanks for your comments. Your comments makes sense. The specifics related
to the services are achieved through newly defined objectives. We will update
this in next version according the references.
[email protected]
From: Brian E Carpenter
Date: 2025-10-29 11:03
To: Anima WG; draft-han-anima-grasp-congestion-relief
Subject: [Anima] Re: I-D Action: draft-han-anima-grasp-congestion-relief-00.txt
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Hi,
This does seem like a good application for GRASP and it will be
interesting to see more details. However, I have one major comment:
> 4.1.1. New GRASP Option: Congestion Monitoring
>
> A new Option is defined within the GRASP protocol to carry congestion
> status information transmitted between Autonomous Service Agent (ASA)
> nodes. As an example, a node MAY periodically transmit messages that
> include its local congestion metrics, such as queue length and
> bandwidth utilization to adjacent nodes.
>
> 4.1.2. New GRASP Option: Bandwidth Allocation
>
> Leveraging the negotiation mechanism inherent to the GRASP protocol,
> network nodes are able to negotiate the allocation of bandwidth
> resources. Upon the occurrence of network congestion, nodes SHALL
> renegotiate the bandwidth allocation scheme, reduce the bandwidth
> consumption of non-critical traffic flows, and release additional
> resources to be allocated to critical traffic flows.
I believe this is not the best approach. There is no need to define
new GRASP options; that would require modifications to the entire
implementation of the GRASP protocol. The better approach is to define
two GRASP objectives. Please see [1] for the guidelines and [2] for
a complete example There is prototype code for that example at [3, 4]).
[1] https://www.rfc-editor.org/rfc/rfc9222.html
[2] https://www.rfc-editor.org/rfc/rfc8992.html
[3] https://github.com/becarpenter/graspy/blob/master/documentation/pfxm3.pdf
[4] https://github.com/becarpenter/graspy/blob/master/ASA-examples/pfxm3.py
Regards/Ngā mihi
Brian Carpenter
On 21-Oct-25 03:22, [email protected] wrote:
> Internet-Draft draft-han-anima-grasp-congestion-relief-00.txt is now
> available.
>
> Title: Automatic Network Congestion Relief in GeneRic Autonomic
> Signaling Protocol (GRASP)
> Authors: Mengyao Han
> Jing Zhao
> Zheng Ruan
> Shuai Zhang
> Name: draft-han-anima-grasp-congestion-relief-00.txt
> Pages: 6
> Dates: 2025-10-20
>
> Abstract:
>
> This draft defines a method for automatic congestion relief using the
> Grasp protocol. In operator networks, in response to network
> failures such as fiber optic cable faults and optical module
> malfunctions, network devices can automatically respond and achieve
> real-time self-healing, thereby ensuring the stable operation of the
> network.
>
> The IETF datatracker status page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-han-anima-grasp-congestion-relief/
>
> There is also an HTMLized version available at:
> https://datatracker.ietf.org/doc/html/draft-han-anima-grasp-congestion-relief-00
>
> Internet-Drafts are also available by rsync at:
> rsync.ietf.org::internet-drafts
>
>
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