H3C S3600-28PSI System Description

Also see for S3600-28FEI: Datasheet Operation manual Operation manual

H3C S3600-28PSI System Description Manual pdf 60 page image

System DescriptionH3C S3600 Series Ethernet Switches Chapter 3 Software Features3-1Chapter 3 Software Features3.1 Basic Features3.1.1 Link AggregationThe link aggregation function is used for the connection between Ethernet switches orbetween the switches and high-speed servers. It is a simple and cheap way to expandthe bandwidth of a switch port and balance the traffic among all the ports in a linkaggregation. Moreover, it enhances the connection reliability.With link aggregation, several Ethernet ports on a switch are bundled together and areconsidered one logical port inside the switch. The switch automatically balances thetraffic among the ports and increases the bandwidth in this aggregation, while ensuringthe right order of packets for the sake of service compatibility. If the link on a port in theaggregation fails, the traffic on it is distributed among other ports without interruptingthe normal service. After the port recovers, the traffic is automatically distributed againso that the port can share the load together with others. The S3600 series supportmanual link aggregation and dynamic link aggregation through the link aggregationcontrol protocol (LACP).IEEE802.3ad-based LACP dynamically aggregates and de-aggregates links. ALACP-enabled port notifies the remote end of information on system priority, systemMAC, port priority, port number and operation key by sending link aggregation controlprotocol data units (LACPDUs). The remote end receives the information, and thencompares it with that of other ports for determining the ports to be aggregated, so thatan agreement can be achieved on port aggregation or leaving a dynamic aggregation.3.1.2 Broadcast SuppressionThe broadcast suppression function is used to suppress the propagation of largeamount of unknown unicast, multicast or broadcast packets in a network, thus limitingtheir impact on the operating efficiency of the network.For the S3600 series, broadcast suppression is configured on port. After configuring abroadcast suppression ratio on a port, you can monitor the broadcast traffic of unknownunicast, multicast and broadcast packets on it. When the traffic exceeds the specifiedbandwidth limit, the switch drops the excessive traffic and reduces the traffic ratio to arational amount to guarantee the normal operation of network services. The S3600