Enterprise Ethernet: Low CoS vs High CoS

1 min readNBN

The Core Difference

Table (Header Row)
Feature
Low CoS (Best Effort)
High CoS (Dedicated)
Tech Name100% EIR (Excess Information Rate)100% CIR (Committed Information Rate)
GuaranteeNone. Bandwidth is "up to" the speed.Guaranteed 1:1. You get the full speed 24/7.
PriorityLow priority traffic.High priority traffic.
CongestionSlows down during peak network usage.Does not slow down; unaffected by other users.

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