User`s guide

VigorSwitch P2261 User’s Guide
84
Parameters description:
VLAN ID VLAN ID of the group.
Group Group address of the group displayed.
Port Switch port number.
Mode Indicates the filtering mode maintained per (VLAN ID,
port number, Group Address) basis. It can be either
Include or Exclude.
Source Address IP Address of the source. Currently, system limits the total
number of IP source addresses for filtering to be 128.
Type Indicates the Type. It can be either Allow or Deny.
Auto refresh The simple counts will be refreshed automatically on the
UI screen.
Refresh The simple counts will be refreshed manually when user
use mouse to click on “Refresh” button.
2
2
.
.
3
3
.
.
1
1
9
9
M
M
L
L
D
D
S
S
n
n
o
o
o
o
p
p
i
i
n
n
g
g
–
–
G
G
e
e
n
n
e
e
r
r
a
a
l
l
S
S
e
e
t
t
u
u
p
p
Curiously enough, a network node that acts as a source of IPv6 multicast traffic is only an
indirect participant in MLD snooping—it just provides multicast traffic, and MLD doesn’t
interact with it. (Note, however, that in an application like desktop conferencing a network
node may act as both a source and an MLD host; but MLD interacts with that node only in
its role as an MLD host.)
A source node creates multicast traffic by sending packets to a multicast address. In IPv6,
addresses with the first eight bits set (that is, “FF” as the first two characters of the address)
are multicast addresses, and any node that listens to such an address will receive the traffic
sent to that address. Application software running on the source and destination systems
cooperates to determine what multicast address to use. (Note that this is a function of the
application software, not of MLD.)
When MLD snooping is enabled on a VLAN, the switch acts to minimize unnecessary
multicast traffic. If the switch receives multicast traffic destined for a given multicast