Transcript TRILL Base Protocol -05 to -06 Changes

TRILL
Protocol Specification
Changes from -06 to -07
Donald Eastlake 3rd
+1-508-786-7554
[email protected]
March 2008
Protocol Draft Changes -06 to -07
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Editorial Changes
1. Fix a few cases where hop count was off by 1.
2. Replace remaining Q-tag references with Ctag.
3. Add a few frame type definitions (Section 1.2)
and a list of acronyms (new Section 10).
4. Re-order some sub-sections.
5. Make figure numbers section relative and add
table numbers.
March 2008
Protocol Draft Changes -06 to -07
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From Vancouver
1. Remove Pseudo-node suppression material.
2. Add ability to configure a port to drop native
frames and not send native frames (i.e., no end
station support).
3. Permit Rbridges to implement GVRP/MVRP
(see also technical changes slide).
4. Add note that difficulties in determining link
speed when there are intervening boxes is not
unique to Rbridges.
5. Drop recommendation to set “bridge” flags in
some 802.1AB fields. (actually from Chicago
but accidentally omitted in -06)
March 2008
Protocol Draft Changes -06 to -07
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Expansions / Pseudo-Code
1. Add Section 4.8 giving a more detailed
exposition of multipathing.
2. Add Section 2.5 comparing zero configuration
802.1D, 802.1Q, and Rbridges.
3. Added note to Security Considerations to use
care when using VLANs for security.
4. Pseudo-Code (Section 5) has been partially
updated.
March 2008
Protocol Draft Changes -06 to -07
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Technical Changes
1. IEEE 802.1 VLAN registration protocols (either
the older GVRP or newer MVRP) didn’t work.
Added Section 4.7 which goes about 75% of
the way to making MVRP (Multiple VLAN
Registration Protocol, 802.1ak) work so that
Rbridges can incrementally replace 802.1Q
customer bridges where either the replaced or
remaining bridges have ports with dynamically
registered VLANs.
2. Options – see next slide.
March 2008
Protocol Draft Changes -06 to -07
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Options
• For discussion purposes and to provide
some examples
– The protocol-07 draft specifies only summary
hop-by-hop and ingress-to-egress critical
options present bits.
– Individual draft -rbridge-options-00 specifies:
• A fairly complete options syntax and
• A number of specific options.
March 2008
Protocol Draft Changes -06 to -07
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