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226
The following table describes the labels in this screen.
Table 102
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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C
HAPTER
24
Routing Table
24.1
Overview
Routing is based on the destination address only and the VMG takes the shortest path to forward a
packet.
24.2
The Routing Table Screen
Click
System Monitor
>
Routing Table
to open the following screen.
Figure 133
System Monitor > Routing Table
The following table describes the labels in this screen.
Table 103
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 103
System Monitor > Routing Table (continued)
LABEL
DESCRIPTION
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25
Multicast Status
25.1
Overview
Use the
Multicast Status
screens to look at IGMP/MLD group status and traffic statistics.
25.2
The IGMP Status Screen
Use this screen to look at the current list of multicast groups the VMG has joined and which ports
have joined it. To open this screen, click
System Monitor > Multicast Status > IGMP Status
.
Figure 134
System Monitor > Multicast Status > IGMP Status
The following table describes the labels in this screen.
25.3
The MLD Status Screen
Use this screen to look at the current list of multicast groups the VMG has joined and which ports
have joined it. To open this screen, click
System Monitor > Multicast Status
> MLD Status
.
Table 104
System Monitor > Multicast Status > IGMP Status
LABEL
DESCRIPTION
Refresh
Click this button to update the information on this screen.
Interface
This field displays the name of an interface on the VMG that belongs to an IGMP multicast
group.
Multicast Group
This field displays the name of the IGMP multicast group to which the interface belongs.
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.
Member
This is the list of the members of the multicast group.
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Figure 135
System Monitor > Multicast Status > MLD Status
The following table describes the labels in this screen.
Table 105
System Monitor > Multicast Status > MLD Status
LABEL
DESCRIPTION
Refresh
Click this button to update the status on this screen.
Interface
This field displays the name of an interface on the VMG that belongs to an MLD multicast
group.
Multicast Group
This field displays the name of the MLD multicast group to which the interface belongs.
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.
Member
This is the list of members in the multicast group.

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