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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