Item No. 6c_ supp 
Meeting Date: March 4, 2019 
Tenant Network DMARC Upgrade 
C800841 
Seattle-Tacoma
International Airport
March 12, 2019 

1

Project Status 
Commission authorized design on September 26, 2017, for
the recommended alternative 
Design is complete 
Project is seeking construction authorization for final
implementation 
Project team working closely with legacy communications
vendor to identify abandoned wiring to be removed during
construction  potential cost risk 
The project continues to be a valid need and remains consistent with the latest Port standards 
2

What is a DMARC? 
A DMARC is short for "Demarcation" and creates a place
within a tenant's leased space to connect their
communications equipment to the Port's fiber optic
network 
This DMARC connection allows a tenant to ultimately gain
access to Internet and communications service providers 
Tenant DMARCs are a landlord/tenant communication technology best practice 
3

Why Do We Need DMARCs 
A large portion of Sea-Tac's existing tenant
communications infrastructure is obsolete and outdated 
DMARCs facilitate a tenant's connection to modern high-
speed fiber optic network cabling 
Will facilitate a tenant's flexibility to adjust their telephone,
Internet, and data services to better meet business needs 
Allows quicker activation of communication service as
tenants move in 
Many existing Sea-Tac tenants are still on old copper wiring and outdated cabling 
4

DMARC Project Locations 
Port DMARC 




Tenant DMARCs are needed to replace outdated infrastructure across the Airport 
5

Existing vs. Future Condition (Typical) 


Outdated communications infrastructure compared to the Port's DMARC standard 
6