Package B Ont Considerations And Limitations; Package C Ont Considerations And Limitations - Alcatel-Lucent 7302 Information Manual

Considerations and limitations
When either tip or ring is grounded, DGNONTPOTS tip to ground and ring to ground restrictive
measurements are simultaneously reported as 0 ohms
If the Ethernet port of an ONT connected at 10 Mbps and is being continuously overdriven by a high
volume of traffic in the downstream direction, the OLT may report it as unreachable (by way of AMS)
when an operator attempts to retrieve the PM counts for the ONT at the same time. Overloading the
ONT can be avoided by configuring downstream rate limiting to a level that prevents the Ethernet
port from being overdriven.
The ONT cannot forward CCM packets to the edge router
The ONT does not support RIPv2 or SAPv1 packets on an unicast VLAN that is not the multicast GEM
port
The ONT cannot perform subscriber join IGMP CAC check when LT-to-ONT signalling is disabled
IPv6 DSCP-to-Pbit mapping supported for B-8102G-A, B-8112G-A, I-820G-D, O-820G-D, O-821G-D,
I-240G-A
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Package B ONT considerations and limitations

Table
Considerations and limitations
When using multicast on multiple Ethernet ports, all Ethernet ports must have the same VLAN ID. If
the user-side VLAN IDs are all given the same VLAN ID, a common VLAN ID should result. If not, VLAN
4094 will be used
Package B ONTs are not able to sufficiently buffer enough traffic between grants to support an EIR
rate of 1Gb/s over multiple GEM ports. There are only 1.256 Gb/s buffers available in the SoC chip.
The buffers are divided among the number of configured GEM ports. Reducing the number of GEM
ports configured results in increased upstream buffering and higher upstream traffic rates.
Packets with less than 72 bytes are increased to exactly 72 bytes in size with padding
Package B ONTs that use pre R04.00.10 software may not range if the distance from the LT card is
less than 1km
After the ONT is In Service, a subsequent edit of the ONT Out-of-Service and back In-Service may
result in a temporary SIPREGDNS Alarm on POTS 2 when the Service change is sequenced in close
timing proximity to a DNS TTL expiry.

Package C ONT considerations and limitations

Table
Considerations and limitations
Ethernet OAM (802.1 ag) is not supported
TPID overwrite is not supported
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Alcatel-Lucent 7302 ISAM | 7330 ISAM FTTN | 7360 ISAM FX ONT R04.06.02
3FE 55873 AAAA TCZZA Edition 01
ONT Product Information Guide
1-3 lists the considerations and limitations for Package B ONTs.
Table 1-3 Package B ONT considerations and limitations
1-4 lists the considerations and limitations for Package C ONTs.
Table 1-4 Package C ONT considerations and limitations
1 — ONT and MDU overview
November 2013 1-11