QUIC-LB: Generating Routable QUIC Connection IDs
draft-ietf-quic-load-balancers-06
QUIC M. Duke
Internet-Draft F5 Networks, Inc.
Intended status: Standards Track N. Banks
Expires: 8 August 2021 Microsoft
4 February 2021
QUIC-LB: Generating Routable QUIC Connection IDs
draft-ietf-quic-load-balancers-06
Abstract
The QUIC protocol design is resistant to transparent packet
inspection, injection, and modification by intermediaries. However,
the server can explicitly cooperate with network services by agreeing
to certain conventions and/or sharing state with those services.
This specification provides a standardized means of solving three
problems: (1) maintaining routability to servers via a low-state load
balancer even when the connection IDs in use change; (2) explicit
encoding of the connection ID length in all packets to assist
hardware accelerators; and (3) injection of QUIC Retry packets by an
anti-Denial-of-Service agent on behalf of the server.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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Task Force (IETF). Note that other groups may also distribute
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and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on 8 August 2021.
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document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document.
Duke & Banks Expires 8 August 2021 [Page 1]
Internet-Draft QUIC-LB February 2021
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 5
1.2. Notation . . . . . . . . . . . . . . . . . . . . . . . . 5
2. Protocol Objectives . . . . . . . . . . . . . . . . . . . . . 6
2.1. Simplicity . . . . . . . . . . . . . . . . . . . . . . . 6
2.2. Security . . . . . . . . . . . . . . . . . . . . . . . . 6
3. First CID octet . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Config Rotation . . . . . . . . . . . . . . . . . . . . . 7
3.2. Configuration Failover . . . . . . . . . . . . . . . . . 8
3.3. Length Self-Description . . . . . . . . . . . . . . . . . 8
3.4. Format . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. Load Balancing Preliminaries . . . . . . . . . . . . . . . . 9
4.1. Non-Compliant Connection IDs . . . . . . . . . . . . . . 9
4.2. Arbitrary Algorithms . . . . . . . . . . . . . . . . . . 10
4.3. Server ID Allocation . . . . . . . . . . . . . . . . . . 11
4.3.1. Static Allocation . . . . . . . . . . . . . . . . . . 11
4.3.2. Dynamic Allocation . . . . . . . . . . . . . . . . . 12
5. Routing Algorithms . . . . . . . . . . . . . . . . . . . . . 14
5.1. Plaintext CID Algorithm . . . . . . . . . . . . . . . . . 14
5.1.1. Configuration Agent Actions . . . . . . . . . . . . . 14
5.1.2. Load Balancer Actions . . . . . . . . . . . . . . . . 14
5.1.3. Server Actions . . . . . . . . . . . . . . . . . . . 14
5.2. Stream Cipher CID Algorithm . . . . . . . . . . . . . . . 15
5.2.1. Configuration Agent Actions . . . . . . . . . . . . . 15
5.2.2. Load Balancer Actions . . . . . . . . . . . . . . . . 15
5.2.3. Server Actions . . . . . . . . . . . . . . . . . . . 17
5.3. Block Cipher CID Algorithm . . . . . . . . . . . . . . . 17
5.3.1. Configuration Agent Actions . . . . . . . . . . . . . 17
5.3.2. Load Balancer Actions . . . . . . . . . . . . . . . . 17
5.3.3. Server Actions . . . . . . . . . . . . . . . . . . . 18
6. ICMP Processing . . . . . . . . . . . . . . . . . . . . . . . 18
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