Extron electronics NAV SD 101, Руководство пользователя

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NAV SD 501 and NAV SD 101 Scaling Decoders • HTML Operation 44
PRELIMINAR
Y
3
IGMP Querier pane (see figure 40 on page 43) — See “IGMP Querier pane” below.
4
Memory Utilization — Indicates how much decoder memory is used, expressed in
percent.
5
AV LAN Utilization
— Indicates the total bandwidth usage at that moment. The
decoder generates an alarm if the utilization goes above 90%. The alarm clears
automatically once the level drops below 90%.
6
Ethernet Extension Utilization pane (NAV SD 501only) — See ”Ethernet Extension
Utilization pane”, below.
7
USB Devices pane (NAV SD 501 only) — See USB Devices pane on page 45.
8
Primary Controller pane — See Primary Controller pane on page 45.
9
Alarms pane
— See
Alarms pane
on page 46.
¢
Download Logs link — See Download Logs link on page 47.
IGMP Querier pane
IGMP querier is a network service, usually running on a network switch, that can initiate
IGMP queries. An IGMP querier should be configured on the NAV network. It manages the
multicast traffic. If there is no IGMP querier on the network, there is no effective multicast
traffic management and the multicast traffic saturates the network and stream errors can
occur.
The
IGMP Querier
pane (see figure 40 ,
3
on page 43) shows whether or not an IGMP
querying device is present on the network, and the IP address of the IGMP querier.
Figure 41 shows the indication if no IGMP querier is present on the network.
Figure 41. IGMP Querier Pane with no IGMP Querier Present on the Network
Ethernet Extension Utilization pane (NAV SD 501only)
The
Ethernet Extension Utilization
pane (see figure 40,
6
) indicates the total
bandwidth usage of the rear panel Extension port (see figure 2 ,
H
on page 5) at that
moment. The decoder generates an alarm if the utilization goes above 90%. The alarm
clears automatically once the level drops below 90%. Figure 42 shows the indication if the
Extension port is either
disabled (see Network Connection on page 52) or enabled with
nothing connected to it.
Figure 42. Ethernet Extension Utilization Pane when Extension is not in Use