Technical Summary
This document specifies a TRILL (Transparent Interconnection of Lots
of Links) IS-IS application sub-TLV that enables the reporting by a
TRILL switch of sets of addresses. Each set of addresses reports all
of the addresses that designate the same interface (port) and also
reports the TRILL switch by which that interface is reachable. For
example, a 48-bit MAC (Media Access Control) address, IPv4 address,
and IPv6 address can be reported as all corresponding to the same
interface reachable by a particular TRILL switch. Such information
could be used in some cases to synthesize responses to or by-pass the
need for the Address Resolution Protocol (ARP), the IPv6 Neighbor
Discovery (ND) protocol, or the flooding of unknown MAC addresses.
Working Group Summary
Working Group discussions indicate that this
new application sub-tlv for TRILL ISIS was the best solution.
This is part of the directory services set of drafts.
Document Quality
with directory services. The four drafts are:
draft-ietf-trill-directory-assist-mechanisms () - describes the push/pull
draft-ietf-trill-channel-tunnel-05 - secure tunnel for directory push
draft-ietf-trill-ia-appsubtlv-05 - reporting of addresses for TRILL interfaces
in ISIS application sub-TLV (reduces/replaces need for ARP/ND )
draft-ietf-trill-arp-optimization - mechanism to optimize ARP and ND traffic
on TRILL campus
Directory service mechanism are currently implemented as proprietary
fashions by every vendor that does some variant of TRILL (cisco, brocade, Huawei
and others). Until we get a full standard solution approved, the
existing vendors with "early TRILL" implementations have little reason
to switch.
Huawei is planning implementations. Potentially Brocade and Cisco
could switch to these mechanisms, but unless IETF standards are out
as a set - this may not occur.
Shepherd's review resulted in simplification of section 2.
No MIB, Media type or other expert review.
Personnel
Document shepherd: Susan Hares
WG Chairs: Jon Hudson and Susan Hares
Area Director: Alia Atlas