Nortel 2001 Installation And Operation Manual

Also see for 2210: Installation and operation guide Fundamentals Fundamentals Installation and operation User guide

Contents

Appendix A: 802.1Q VLAN description Page 259 of 302IP Phones Description, Installation, and Operation• If 802.1Q is enabled, all frames transmitted by the Ethernet driver havethe 802.1Q tag bytes inserted between the source MAC address and theprotocol type field. The tag protocol identifier field contains 8100 (hex)and the CFI bit is set to 0.• When 802.1Q is enabled, the configuration of separate voice and dataVLANs is possible. Each VLAN has its own ID and priority on the IPPhone. Voice messages have the priority bits of all frames set to 6 (octal)and the VOICE VLAN ID is set to 000 (hex) by default. Data messageshave the priority bits of all frames set to 0 and the DATA VLAN ID isset to 000 (hex) by default. The GUI and TPS configured values overridethese values.• The IP Phone’s Ethernet driver receives any Ethernet frame destined forit, regardless of whether 802.1Q is enabled or whether the received frameis an 802.1Q tagged frame.Note: The only exception is any 802.1Q tagged frame with the CFI = 1.In this case the frame is discarded.• The IP Phone’s Ethernet driver strips the 802.1Q tag information fromthe frame prior to passing it on to the IP stack.• The IP Phone’s Ethernet driver filters packets by the VLAN tag andMAC address. Tagged traffic is prioritized and routed based on thepriority bits.For more information on configuring 802.1Q on an IP Phone 2001, see“First-time installation” on page 29.For more information on configuring 802.1Q on an IP Phone 2002, see“First-time installation” on page 59.For more information on configuring 802.1Q on an IP Phone 2004, see“First-time installation” on page 91.IP Softphone 2050 supportThe IP Softphone 2050 supports 802.1Q with Windows 2000. By default,when 802.1Q is enabled, the priority bits of all frames are set to 6 and theVLAN ID is set to 0 (a restriction of Windows 2000).