Luxul XMS-1024, Руководство пользователя

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User Guide
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5.4 Mirror
„
Port„mirroring„is„used„to„transfer„the„packets„of„one„or„more„monitored„ports„to„
another„port,„allowing„a„security„department„or„administrator„to„monitor„Internet„
access,„traffic„flows„and„packets.„
The„bandwidth„of„the„monitoring„port„cannot„be„lower„than„that„of„the„„
monitored„port.„
If„the„monitoring„port„is„the„monitored„port,„the„system„automatically„ignores„this„
monitored„port„and„does„not„duplicate„the„traffic.„
This„function„supports„cross-VLAN„monitoring.„Monitoring„is„allowed„even„if„the„
monitored„port„and„the„monitoring„port„belong„to„different„VLAN„groups.„
„
„
Mirror:
„ w
Mirror„Port:„Selects„a„port„to„serve„as„the„monitoring„port
„ w
Mirrored„Port:„Selects„one„or„more„ports„to„be„monitored
5.5 VLAN
A„VLAN„or„Virtual„Local„Area„Networks„can„be„used„to„establish„secure„autono-
mous„broadcast/multicast„domains.„A„VLAN„is„used„to„divide„a„network„into„
multiple„network„segments„and/or„to„shrink„broadcast„domains„for„application„or„
departmental„optimization.„Within„a„VLAN,„all„Ethernet„packets,„such„as„unicast,„
multicast,„broadcast„and„unknown„unicast„packets„will„be„transferred„only„to„other„
devices„within„the„VLAN„group.„A„VLAN„can„be„used„to„change„the„topological„
structure„of„the„network„without„any„movement„of„a„network„device„or„change„of„
network„connections.„You„can„modify„the„VLAN„settings„of„a„device„for„example,„
to„“move”„a„device„from„the„VLAN„of„one„group„to„that„of„another„group.„This„
helps„create„secure,„optimized„departmental„(or„function/application„specific)„
networks„that„cannot„be„accessed„by„other„departments,„applications„or„functions.„
This„also„means„the„network„nodes„or„devices„can„be„moved,„changed„or„added„
without„having„to„physically„move„the„device.„