Nortel 1110 User Guide
Appendix B: 802.1Q VLAN description
Page 517 of 630
IP Phones
Description, Installation, and Operation
Enable/Disable menu is available to enable or disable telephony packets
filtering based on a VLAN ID. The Enable/Disable menu is only available if
tagging is enabled on the IP Phone port.
filtering based on a VLAN ID. The Enable/Disable menu is only available if
tagging is enabled on the IP Phone port.
Enhanced DATA VLAN
Enhancements for DATA (PC Port) VLAN for the IP Phone include the
following:
following:
•
DATA (PC Port) VLAN packet handling
–
PC Port (Ingress direction)
–
PC Port (Egress direction)
•
DATA (PC Port) VLAN Tag Stripping
IMPORTANT!
VLAN filtering on the telephony port is disabled by default. If tagging is
enabled on the telephony port, you can enable VLAN filtering on the
telephony port. When VLAN filtering is enabled, packets destined for the
IP Phone port are filtered based on the MAC address and the VLAN tag.
enabled on the telephony port, you can enable VLAN filtering on the
telephony port. When VLAN filtering is enabled, packets destined for the
IP Phone port are filtered based on the MAC address and the VLAN tag.
If VLAN filtering is not enabled on the telephony port, packets destined
for the IP Phone port are filtered only on the MAC address. Filtering
based on the VLAN tag does not occur. This makes the telephony port
susceptible to broadcast storms and a Denial of Service (DOS) attack.
for the IP Phone port are filtered only on the MAC address. Filtering
based on the VLAN tag does not occur. This makes the telephony port
susceptible to broadcast storms and a Denial of Service (DOS) attack.