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The following table describes the labels in this screen.
Table 108
System Monitor > ARP Table
LABEL
DESCRIPTION
#
This is the ARP table entry number.
IPv4/IPv6
Address
This is the learned IPv4 or IPv6 IP address of a device connected to a port.
MAC Address
This is the MAC address of the device with the listed IP address.
Device
This is the type of interface used by the device. You can click on the device type to go to its
configuration screen.
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HAPTER
23
Routing Table
23.1
Overview
Routing is based on the destination address only and the Device takes the shortest path to forward
a packet.
23.2
The Routing Table Screen
Click
System Monitor
>
Routing Table
to open the following screen.
Figure 142
System Monitor > Routing Table
The following table describes the labels in this screen.
Table 109
System Monitor > Routing Table
LABEL
DESCRIPTION
IPv4/IPv6 Routing Table
Destination
This indicates the destination IPv4 address or IPv6 address and prefix of this route.
Gateway
This indicates the IPv4 address or IPv6 address of the gateway that helps forward this
route’s traffic.
Subnet Mask
This indicates the destination subnet mask of the IPv4 route.
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Flag
This indicates the route status.
U-Up:
The route is up.
!-Reject:
The route is blocked and will force a route lookup to fail.
G-Gateway:
The route uses a gateway to forward traffic.
H-Host:
The target of the route is a host.
R-Reinstate:
The route is reinstated for dynamic routing.
D-Dynamic (redirect):
The route is dynamically installed by a routing daemon or redirect.
M-Modified (redirect):
The route is modified from a routing daemon or redirect.
Metric
The metric represents the "cost of transmission". A router determines the best route for
transmission by choosing a path with the lowest "cost". The smaller the number, the lower
the "cost".
Service
This indicates the name of the service used to forward the route.
Interface
This indicates the name of the interface through which the route is forwarded.
brx
indicates a LAN interface where x can be 0~3 to represent LAN1 to LAN4 respectively.
ptm0
indicates a WAN interface using IPoE or in bridge mode.
ppp0
indicates a WAN interface using PPPoE.
Table 109
System Monitor > Routing Table (continued)
LABEL
DESCRIPTION
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24
IGMP/MLD Status
24.1
Overview
Use the
IGMP Status
screens to look at IGMP/MLD group status and traffic statistics.
24.2
The IGMP/MLD Group Status Screen
Use this screen to look at the current list of multicast groups the Device has joined and which ports
have joined it. To open this screen, click
System Monitor > IGMP/MLD Group Status
.
Figure 143
System Monitor > IGMP/MLD Group Status
The following table describes the labels in this screen.
Table 110
System Monitor > IGMP/MLD Group Status
LABEL
DESCRIPTION
Interface
This field displays the name of an interface on the Device that belongs to an IGMP or MLD
multicast group.
Multicast Group
This field displays the name of the IGMP or MLD multicast group to which the interface
belongs.
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Filter Mode
INCLUDE
means that only the IP addresses in the
Source List
get to receive the multicast
group’s traffic.
EXCLUDE
means that the IP addresses in the
Source List
are not allowed to receive the
multicast group’s traffic but other IP addresses can.
Source List
This is the list of IP addresses that are allowed or not allowed to receive the multicast
group’s traffic depending on the filter mode.
Table 110
System Monitor > IGMP/MLD Group Status (continued)
LABEL
DESCRIPTION
19216811.live