3Com S7902E, Руководство по настройке

Страница: 307 / 2621

3-7
If the request packet contains no PPPoE tag, the ONU adds the tag (containing the UNI port
information) to the request packet and forwards the packet to the OLT side.
If the request packet contains a PPPoE tag, the ONU directly forwards the request packet to the
OLT side without adding any tag.
Follow these steps to enable related protocol(s) on an ONU:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter ONU port view
interface onu
interface-number
—
Enable related protocol(s) on
the ONU
onu-protocol
{
stp
|
dhcp-snooping
|
dhcp-snooping information |
pppoe
}
enable
Optional
By default:
RSTP is enabled on the
ONU.
DHCP snooping, DHCP
snooping Option82, and
PPPoE+ are disabled on the
ONU.
When STP is enabled globally on the S7900E switch, you should enable STP on all ONUs.
Additionally, configure STP correctly to ensure that no ONU can be selected as the STP root bridge;
otherwise, anomaly may occur on the network.
STP runs normally only when all attached ONUs are H3C ONUs.
Configuring the Multicast Mode of the ONU
Prerequisites for multicast mode configuration
Through extended OAM, an OLT can be used to remotely configure the multicast mode of an ONU as
either IGMP snooping mode or multicast control mode.
The configuration of a multicast IP address-to-multicast VLAN correspondence is used to add multicast
address(es) to a multicast VLAN. Upon receiving an IGMP report message, the OLT determines
whether the multicast IP address contained in the message belongs to the multicast VLAN. If yes, the
OLT generates a multicast forwarding entry in the multicast VLAN of the multicast IP address; otherwise,
the OLT directly discards the message. A multicast IP address can belong to only one multicast VLAN.
Follow these steps to complete the prerequisites for multicast mode configuration:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter FTTH view
ftth
—
Add multicast address(es) to a
multicast VLAN
multicast vlan-id vlan-id
dest-ip ip-address-list
Required
Return to system view
quit
—