Alcatel Carrier Internetworking Solutions Switch/Router 用户手册
Creating Multicast VLANs
Page 23-5
Step A. Entering Basic Information
1. To begin setting up a multicast
VLAN
type
crmcvl
at any prompt.
2. The following prompt displays:
Enter the VLAN Group id for this VLAN ( 1):
Enter the number for the Group to which this multicast
VLAN
will belong.You can create
up to
32
multicast
VLAN
s and up to 31 AutoTracker
VLAN
s in a single Group.
3. The following prompt displays:
Enter the VLAN Id for this VLAN ( 5):
Enter the number that will identify this multicast
VLAN
within the Group specified above.
Up to 32 multicast
VLAN
s may belong to the same Group. By default the system displays
the next available
VLAN ID
number.
♦ Note ♦
Unlike AutoTracker
VLAN
s, you can configure rules for
the multicast
VLAN
#1. There is not a default multicast
VLAN
, so multicast
VLAN
#1 is treated the same as the
other 31 possible multicast
VLAN
s.
Press
<Enter>
to accept this default.
4. The following prompt displays:
Enter the new VLAN’s description:
Enter a textual description that will help you identify the multicast
VLAN
. For example, if
you know this multicast
VLAN
will be composed of only workstations receiving
CNN
news
feeds, you might call the multicast
VLAN
“
CNN MVLAN
.” You may use up to 30 characters
for this description.
5. The following prompt displays:
Enter the Admin Status for this vlan (Enable (e) / Disable (d):
Enter whether or not you want the Administrative Status for this multicast
VLAN
to be
enabled or disabled. Once enabled, the switch begins using the policies you defined. A
disabled multicast
disabled multicast
VLAN
is still defined (name, number, policies intact), but the switch
keeps the multicast
VLAN
disabled. The enable/disable status may be changed at a later
time using the
modmcvl
command.
♦ Note ♦
A multicast
VLAN
may not always be operational even
when its Admin Status is enabled. A multicast
VLAN
’s
operation may be disabled by its switches because
devices in the multicast
devices in the multicast
VLAN
cease transmitting data,
among other reasons.
After you enter the administrative status, additional prompts display that allow you define
the multicast address. See the next section, Step B. Defining the Multicast Address on page
23-6 for further instructions.
the multicast address. See the next section, Step B. Defining the Multicast Address on page
23-6 for further instructions.