march 2006 capwap protocol specification update march 2006 [email protected]...
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March 2006
CAPWAP Protocol Specification Update
March 2006
March 2006
Update on Tracker
• Number of issues submitted: 85• Number of issues closed (in -00): 41• Number of issues targeted for -01: 19• Number of remaining issues (for -02+): 25
http://www.capwap.org/cgi-bin/roundup/CAPWAP/index
March 2006
CAPWAP Protocol Specification-00 1. Protocol name change to "CAPWAP", per list discussion
2. Addition of the three editors, per AD, Chair decisions
3. Addition of a "Contributing Author“ section, with the known contributing authors to date.
• IETF guidelines allow additional info to be provided 4. Inclusion of DTLS as the CAPWAP protocol security mechanism, replacing the
proprietary LWAPP mechanism. • Inserted and modified text reflects Eric and Scott's latest dtls spec, and the list comment
discussion to address Sue and Nancy's questions to date.• Note that the DTLS entry in the issues tracker remains open. Inclusion of the text at this
point is intended to facilitate resolution of any remaining issues. Major changes to sections 2,6,10,15, and smaller changes throughout.
• Work underway to identify changes needed to complete the DTLS specification5. Wording changes to clarify that the message types are messages--changes
sections 5,6,7,8. Also re-numbered the message type values to remove gaps.
March 2006
CAPWAP Protocol Specification-00 6. Addition of a section for WaitJoin Timer, which was not defined.
• Need to determine a default value.7. Wording changes in the intro and abstract partly due to DTLS changes, partly
changing from passive to active voice, clarity.8. Removed "gold, platinum, bronze" and the like QOS descriptions, retaining the
technical terms only• The "metal" terms were used inconsistently in two places - one had uranium but the
other didn't, and one included the technical terms and the other didn't.9. Inserted "IEEE" prior to "802.11" in reference - various sections
March 2006
CAPWAP Protocol Specification-00
Other major changes 10. Expand Information Element type field to 16 bits –
Issue 111. Allow for 802.3 tunneling in Local MAC mode –
Issue 312. Define a mandatory mode and tunnel type - Issue 413. Remove layer 2 mode – Issue 614. Specify CAPWAP Fragmentation – Issue 3615. Define optional tunneling in Local MAC section -
Issue 52
An additional 35 issues also resolved – see Tracker
March 2006
CAPWAP Protocol Specification-01 1. DTLS related edits –Issue 2
2. AC Address (39), PMK Sharing (42), Combining Messages (45), Model & Serial number (46,71), Max # BSSs (50), Config names (58)
3. Replace “CKIP” with a generic vendor proprietary extension
4. Add Waitjoin Timer Default Value
5. Author, Acknowledgement section updates
6. Possibly re-structure message element definition organization – simplify cross references. Opinions?
• Create a separate section for all of the message elements, e.g. new 4.3.3, rather than having each element defined in the first place it appears, with subsequent cross references, e.g. 5.3.1 – 5.3.5
• Create a table in each of the message definition sections which lists the message elements and if they are optional or mandatory
March 2006
CAPWAP Protocol Specification-01 7. IEEE 802.11i/RADIUS considerations – Issues 83, 68, and
43
8. IEEE 802.11 configuration and statistics – Issue 62, 84
9. Mechanism for adding other non-802.11 bindings to CAPWAP – Issue 66
10. Minor edits to CAPWAP-00 – Issue 81
March 2006
CAPWAP Protocol Specification-01 9. Vendor specific message types - Issue 37
10. Add Data Rate to LWAPP Header – Issue 53
11. Add Tunnel Indication to Add WLAN - issue 59
12. Are all fields in IEEE 802.11 Add Mobile required for Local MAC? - Issue 63
13. Clarify the contents of the key field in add/update WLAN - Issue 69
March 2006
Major Open Issues
1. Issue #43 - IEEE 802.11i Considerations
2. Issue #66 - Unclear how Clear Config Indication is acknowledged
3. Issue #75 - recommend LWAPP add a new notification message "Gratuitous disconnect notification"
4. Issue #40 - Adapt firmware trigger state machine to allow transition from Run state
5. Issue #72 - get WLAN Config message
6. Issue #74 - About "IEEE 802.11 Binding"
March 2006
Schedule • Current target is July 06 for WGLC- (seems
aggressive, need active support of WG) • Proposed schedule
– Feb 25 – revision 00
– March 20 – IETF meeting – review plans for revision-01, based on list discussion
– May 5th –publish revision 01
– July ID Deadline – publish revision 02
– July 10th – IETF meeting – review plans for revision-03
– July WGLC on 03?
March 2006
CAPWAP State Machine
Idle
DiscoverySulking
DTLS InitDTLS
CompleteImage Data
Configure
ResetDTLS ResetRun
DTLS Rekey