olemus
üks teenuse kvaliteedi klasse
=
a low loss, low delay, low jitter, assured-bandwidth, end-to-end forwarding service class

ülevaateid
https://en.wikipedia.org/wiki/Differentiated_services

https://www.ccexpert.us/family-switches/assured-forwarding-versus-expedited-forwarding.html

https://www.juniper.net/documentation/us/en/software/junos/cos-security-devices/topics/concept/cos-forwarding-class-overview.html

standard
https://tools.ietf.org/html/rfc2598

vt ka
- lihtedastus