CDM-840 Remote Router MN-CDM840
Appendix J Revision 3
J–3
Per queue quantum = available bandwidth *(per queue weight/total
weights)
• WRED – Weighted Random Early Detection is a congestion avoidance algorithm that is
better at avoiding network congestion than using Tail Drop, particularly for TCP traffic.
J.1.3 Return 2-Level Group QoS
Figure J-1. Group QoS Multi-tenant Site Return QoS
Comtech EF Data’s Advanced VSAT supports Return 2-level Group QoS to allow a service
provider to support multi-user, multi-tenant sites where each customer can be assigned a share
of the return capacity as CIR (Committed Information Rate) and MIR (Maximum Information
Rate). As shown in Figure J-1, Return 2-level Group QoS allows efficient bandwidth sharing and
prioritization among customer sites, and traffic types:
• Level 1 allows different customers to share and prioritize bandwidth allocation among them.
• Level 2 allows different applications and traffic types to be prioritized by a customer.
• Traffic shaping is supported with multi-tier QoS.
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