IETF-85 Proceedings
Introduction | Area, Working Goup & BoF Reports | Plenaries | Training | Internet Research Task Force
Dynamic Host Configuration (dhc) (WG)
Additional information is available at tools.ietf.org/wg/dhc
Chair(s):
Internet Area Area Director(s):
Internet Area Advisor
|
Meeting Slides:
Blue Sheets:
Internet-Drafts:
Request for Comments:
- Clarifications and Extensions for the Bootstrap Protocol (RFC 1532) (51545 bytes)
obsoleted by RFC 1542
updates RFC951
- Dynamic Host Configuration Protocol (RFC 1531) (96192 bytes)
obsoleted by RFC 1541
- DHCP Options and BOOTP Vendor Extensions (RFC 1533) (50919 bytes)
obsoleted by RFC 2132
obsoletes rfc1048 obsoletes rfc1084 obsoletes rfc1395 obsoletes rfc1497
- Interoperation Between DHCP and BOOTP (RFC 1534) (6966 bytes)
- Dynamic Host Configuration Protocol (RFC 2131) (113738 bytes)
obsoletes rfc1541 updated by RFC 3396,RFC 4361,RFC 5494,RFC 6842
- DHCP Options and BOOTP Vendor Extensions (RFC 2132) (63670 bytes)
obsoletes rfc1533 updated by RFC 3442,RFC 3942,RFC 4361,RFC 4833,RFC 5494
- DHCP Options for Novell Directory Services (RFC 2241) (8419 bytes)
- NetWare/IP Domain Name and Information (RFC 2242) (10653 bytes)
- Procedure for Defining New DHCP Options (RFC 2489) (10484 bytes)
obsoleted by RFC 2939
- DHCP Option for The Open Group's User Authentication Protocol (RFC 2485) (7205 bytes)
- DHCP Option to Disable Stateless Auto-Configuration in IPv4 Clients (RFC 2563) (17838 bytes)
- DHCP Options for Service Location Protocol (RFC 2610) (10859 bytes)
- The Name Service Search Option for DHCP (RFC 2937) (8368 bytes)
- Procedures and IANA Guidelines for Definition of New DHCP Options and Message Types (RFC 2939) (13631 bytes)
obsoletes rfc2489
- The User Class Option for DHCP (RFC 3004) (10423 bytes)
- The IPv4 Subnet Selection Option for DHCP (RFC 3011) (13967 bytes)
- DHCP Relay Agent Information Option (RFC 3046) (30633 bytes)
updated by RFC 6607
- DHC Load Balancing Algorithm (RFC 3074) (19374 bytes)
- Authentication for DHCP Messages (RFC 3118) (35536 bytes)
- DHCP reconfigure extension (RFC 3203) (11857 bytes)
updated by RFC 6704
- The DOCSIS (Data-Over-Cable Service Interface Specifications) Device Class DHCP (Dynamic Host Configuration Protocol) Relay Agent Information Sub-option (RFC 3256) (8551 bytes)
- Dynamic Host Configuration Protocol for IPv6 (DHCPv6) (RFC 3315) (231402 bytes)
updated by RFC 4361,RFC 5494,RFC 6221,RFC 6422,RFC 6644
- Encoding Long Options in the Dynamic Host Configuration Protocol (DHCPv4) (RFC 3396) (18779 bytes)
updates RFC2131
- The Classless Static Route Option for Dynamic Host Configuration Protocol (DHCP) version 4 (RFC 3442) (19370 bytes)
updates RFC2132
- Dynamic Host Configuration Protocol (DHCP) Option for CableLabs Client Configuration (RFC 3495) (26817 bytes)
- Link Selection sub-option for the Relay Agent Information Option for DHCPv4 (RFC 3527) (16831 bytes)
- PacketCable Security Ticket Control Sub-Option for the DHCP CableLabs Client Configuration (CCC) Option (RFC 3594) (12521 bytes)
- IPv6 Prefix Options for Dynamic Host Configuration Protocol (DHCP) version 6 (RFC 3633) (45308 bytes)
updated by RFC 6603
- DNS Configuration options for Dynamic Host Configuration Protocol for IPv6 (DHCPv6) (RFC 3646) (13312 bytes)
- Key Distribution Center (KDC) Server Address Sub-option for the Dynamic Host Configuration Protocol (DHCP) CableLabs Client Configuration (CCC) Option (RFC 3634) (13163 bytes)
- Unused Dynamic Host Configuration Protocol (DHCP) Option Codes (RFC 3679) (13804 bytes)
- Stateless Dynamic Host Configuration Protocol (DHCP) Service for IPv6 (RFC 3736) (18510 bytes)
- Network Information Service (NIS) Configuration Options for Dynamic Host Configuration Protocol for IPv6 (DHCPv6) (RFC 3898) (13955 bytes)
- Vendor-Identifying Vendor Options for Dynamic Host Configuration Protocol version 4 (DHCPv4) (RFC 3925) (17999 bytes)
- Reclassifying Dynamic Host Configuration Protocol version 4 (DHCPv4) Options (RFC 3942) (13996 bytes)
updates RFC2132
- Subscriber-ID Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Option (RFC 3993) (13938 bytes)
- Remote Authentication Dial-In User Service (RADIUS) Attributes Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Information Option (RFC 4014) (15416 bytes)
- The Authentication Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Option (RFC 4030) (34332 bytes)
- Rapid Commit Option for the Dynamic Host Configuration Protocol version 4 (DHCPv4) (RFC 4039) (22297 bytes)
- Simple Network Time Protocol (SNTP) Configuration Option for DHCPv6 (RFC 4075) (9424 bytes)
- Renumbering Requirements for Stateless Dynamic Host Configuration Protocol for IPv6 (DHCPv6) (RFC 4076) (15745 bytes)
- The IPv4 Dynamic Host Configuration Protocol (DHCP) Option for the Internet Storage Name Service (RFC 4174) (29485 bytes)
- Information Refresh Time Option for Dynamic Host Configuration Protocol for IPv6 (DHCPv6) (RFC 4242) (14759 bytes)
- Vendor-Specific Information Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Option (RFC 4243) (14342 bytes)
- Dynamic Host Configuration Protocol (DHCP) Options for Broadcast and Multicast Control Servers (RFC 4280) (23001 bytes)
- Node-specific Client Identifiers for Dynamic Host Configuration Protocol Version Four (DHCPv4) (RFC 4361) (28009 bytes)
updates RFC2131,RFC2132,RFC3315updated by RFC 5494
- Dynamic Host Configuration Protocol (DHCP) Leasequery (RFC 4388) (63914 bytes)
updated by RFC 6148
- Detecting Network Attachment in IPv4 (DNAv4) (RFC 4436) (35991 bytes)
- Dynamic Host Configuration Protocol (DHCP): IPv4 and IPv6 Dual-Stack Issues (RFC 4477) (30440 bytes)
- Dynamic Host Configuration Protocol (DHCP) Options for the Intel Preboot eXecution Environment (PXE) (RFC 4578) (13238 bytes)
- Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Relay Agent Subscriber-ID Option (RFC 4580) (10937 bytes)
- Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Relay Agent Remote-ID Option (RFC 4649) (10940 bytes)
- The Dynamic Host Configuration Protocol (DHCP) Client Fully Qualified Domain Name (FQDN) Option (RFC 4702) (37534 bytes)
- Resolution of Fully Qualified Domain Name (FQDN) Conflicts among Dynamic Host Configuration Protocol (DHCP) Clients (RFC 4703) (29690 bytes)
- The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Client Fully Qualified Domain Name (FQDN) Option (RFC 4704) (32359 bytes)
- Timezone Options for DHCP (RFC 4833) (19573 bytes)
updates RFC2132
- DHCPv6 Relay Agent Echo Request Option (RFC 4994) (10978 bytes)
- The Dynamic Host Configuration Protocol Version 4 (DHCPv4) Relay Agent Flags Suboption (RFC 5010) (13834 bytes)
- DHCPv6 Leasequery (RFC 5007) (47186 bytes)
- Dynamic Host Configuration Protocol Options Used by PXELINUX (RFC 5071) (26777 bytes)
- DHCP Server Identifier Override Suboption (RFC 5107) (14837 bytes)
- DHCP Options for Protocol for Carrying Authentication for Network Access (PANA) Authentication Agents (RFC 5192) (14986 bytes)
- DHCPv6 Bulk Leasequery (RFC 5460) (40629 bytes)
- DHCPv6 Options for Network Boot (RFC 5970) (22660 bytes)
- DHCPv4 Lease Query by Relay Agent Remote ID (RFC 6148) (26185 bytes)
updates RFC4388
- Lightweight DHCPv6 Relay Agent (RFC 6221) (28471 bytes)
updates RFC3315
- Definition of the UUID-Based DHCPv6 Unique Identifier (DUID-UUID) (RFC 6355) (11453 bytes)
- Relay-Supplied DHCP Options (RFC 6422) (16056 bytes)
updates RFC3315
- Virtual Subnet Selection Options for DHCPv4 and DHCPv6 (RFC 6607) (60312 bytes)
updates RFC3046
- Prefix Exclude Option for DHCPv6-based Prefix Delegation (RFC 6603) (19485 bytes)
updates RFC3633
- Rebind Capability in DHCPv6 Reconfigure Messages (RFC 6644) (19176 bytes)
updates RFC3315
- Description of Cisco Systems' Subnet Allocation Option for DHCPv4 (RFC 6656) (54971 bytes)
- Forcerenew Nonce Authentication (RFC 6704) (26538 bytes)
updates RFC3203
- Client Identifier Option in DHCP Server Replies (RFC 6842) (10030 bytes)
updates RFC2131
Charter (as of 1991-01-01):
The dhc working group (DHC WG) has developed DHCP for automated
allocation, configuration and management of IP addresses and TCP/IP
protocol stack parameters. DHCPv4 is currently a "Draft Standard" and
is documented in RFC 2131 and RFC 2132. DHCPv6 is currently a
"Proposed Standard" and is documented in RFC 3315. Subsequent RFCs
document additional options and other enhancements to the
specifications.
The DHC WG is responsible for reviewing DHCP options or other
extensions (for both IPv4 and IPv6). The DHC WG is expected to review
all proposed extensions to DHCP to ensure that they are consistent
with the DHCP specification and other option formats, that they do not
duplicate existing mechanisms, etc. Generally speaking, the DHC WG
will not be responsible for evaluating the semantic content of
proposed options. Similarly, the ownership of specifications typically
belongs the relevant working group that needs more functionality from
DHCP, not the DHC WG. The DHC WG coordinates reviews of the proposed
options together with those working groups. It is required that those
working groups have consensus to take on the work and that the work is
within their charter. Exceptionally, with AD agreement, this same
process can also be used for Individual Submissions originating
outside WGs.
However, the DHC WG can in some cases develop its own options that
relate to either maintenance of existing specifications or
improvements in the operation of the DHCP infrastructure itself.
The DHC WG has the following main objectives:
* Develop extensions to the DHCP infrastructure as required to meet
new applications and deployments of DHCP. The topics currently
in development are:
- Subnet allocation mechanisms
- Virtual subnet identification option
- Option for passing DNS domain information in DHCPv6
- DHCP relay agent assignment notification in DHCPv6
- Option for DHCPv6 server reply sequence numbers
- Rebinding capability for DHCPv6 Reconfigure messages
- Behavior of layer 2 relay agents
The adoption of new items requires explicit agreement from
the AD or rechartering.
* Write analyses of the DHCPv4 and DHCPv6 specifications,
including RFC 2131, RFC 2132, RFC 3315 and other RFCs defining
additional options, which identifies ambiguities, contradictory
specifications and other obstacles to development of interoperable
implementations. Recommend a process for resolving identified
problems and incorporating the resolutions into the DHCP
specification.
Secondly, advance DHCPv4 (RFC 2131 and RFC 2132) and DHCPv6 (RFC
3315) in IETF Standards Track.
Thirdly, specify guidelines for creating new DHCP options, and
report on the status of DHCPv4 option reclassification.
* Assess the requirements for a dual-stack host to use DHCP to obtain
configuration settings for both IPv4 and IPv6. Hosts that include
implementations of both IPv4 and IPv6 ("dual-stack hosts") may use
DHCP to obtain configuration settings (including assigned addresses)
for both IPv4 and IPv6. The DHCPv4 and DHCPv6 specifications (RFC
2131, RFC 2132, RFC 3315 and subsequent RFCs) do not explicitly
explain how a dual-stack host uses DHCP to obtain configuration
settings for both IP stacks. The DHC WG will evaluate solutions for
configuration of dual-stack hosts through DHCP and select a solution
that will be developed and published by the WG.
* Hold a discussion whether on-link prefix information and default
router information is needed in DHCP in addition to router
advertisements. Actual solutions are out of scope for the WG,
however.