Administration HiPath 3000/5000 V7 IP systems

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3000sb4.fm HiPath 3000/5000 in the LAN Network For internal use only Network Analysis Node Number The rule of thumb for calculating the bandwidth requirement for CAR-Alive between n nodes is: Bandwidth LAN = n × (n-1) × bytes AliveMsg × 8 ÷ 1000 ÷ T timeout between ping and the rule of thumb for calculating the bandwidth requirement for CAR-Alive between n nodes at the HG 1500 interface is: Bandwidth LAN = (n-1) × (n-1) × bytes AliveMsg × 8 ÷ 1000 ÷ T timeout between ping The value for bytesAliveMsg: TCP load (Kbps) in the LAN is 212 with ping or 127 with TCP in the WAN is 188 with ping or 102 with TCP Ping load (Kbps) 1 0,07 0,11 2 0,14 0,22 3 0,41 0,66 4 0,82 1,31 5 1,37 2,19 6 2,06 3,28 Table 4-7 WAN Bandwidth Requirement for CAR-Alive/Node Survey The default timeout between two pings is 12 seconds. The following table contains information on additional bandwidth requirements for signals: Device/application BHCA Load (Kbps) DSS server, outgoing and incoming calls 1400 2 Attendant (busy) 1400 3 Call charge information 1400 1 ACD information 1400 10 Fax over vCAPI, 14400 bauds 2 CDB synchronization system with DBFS (TFTP, burst) 162 Table 4-8 Bandwidth Requirements for Signals P31003-H3570-Y100-4-7618, 2007-10-31 4-6 HiPath 3000/5000 V7, System Description
3000sb4.fm For internal use only HiPath 3000/5000 in the LAN Network QoS - Quality of Service 4.2 QoS - Quality of Service Subject Cross Reference Goals of QoS Section 4.2.1 on page 4-7 QoS in the Router? Section 4.2.2 on page 4-7 4.2.1 Goals of QoS Problems: ● IP does not guarantee any bandwidths ● QoS is not part of H.323 Consequences ● Time problems due to large E-mail attachments and web surfing ● Network congestion due to multiple requests for the same web page ● Reduced voice quality due to – Delay – Jitter – Packet loss Goals: ● QoS is required in the WAN/LAN for – Optimum voice quality for every connection – Fewer interruptions 4.2.2 QoS in the Router? ● QoS functions control router priorities and timing. ● Router queues are optimized for routing and are not suitable for QoS monitoring of voice transmission ● Fragmentation (if used) takes time and thereby increases the risk of packet loss ● Time-controlled hierarchical policies not available ● No feedback due to insufficient monitoring ● Architecture not suitable for specialized VoIP control functions P31003-H3570-Y100-4-7618, 2007-10-31 HiPath 3000/5000 V7, System Description 4-7
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