1. IS-IS Geo Location IETF 97, Seoul
Naiming Shen, Cisco
Enke Chen, Cisco
Acee Lindem, Cisco

2. Draft History First presented at IETF 96 in Berlin
Common encoding agreed upon across IS-IS, OSPF, BGP, and LISP
Published 02 version in October 2016
Privacy Discussions

3. Geo Location Use Cases P2P, P2MP, and Hybrid automatic link cost
Overlay with tunnel without underlay distance information
Find-My-Router Apps
Proximity services in content sharing and SFC
Network topology maps
Dynamic DNS loadsharing
Traffic matrix of location pairs
Same ‘subnet’ over WAN and ECMP
Future routing/service/mgmt apps
Static provisioning, utilize additional information or GPS capable device

4. Geo Advertisement Optionally in IS-IS LSP for router location
Optionally advertise in IIH PDU
Notify the neighbor of our location
Can be used to calculate P2P, P2MP and hybrid (e.g. RFC 6845) cost

5. Geo Location TLV Unified Encoding
Previous Encoding Fields
Flags: U, N, E, A, M
Location Uncertainty in centimeters
Latitude and Longitude in milliseconds
Altitude is a signed integer specified in centimeters or meters
New Fields
Radius and R, K flags

6. Privacy Discussion
Current encoding has uncertainty in centimeters – Up to 650 meters of uncertainty. We can make to unit to be in meters for the range up to 65KM
RFC 7459 strongly suggested by Alia as definitive source for geo-privacy.
Discussion started with Alissa Cooper and Martin Thomson.

7. Next Steps
Complete Privacy Discussion
Request WG Adoption