Chapter 3 - Administration
Administration Manual (H.323 Version)
AT-VP504E FXO
39
RFC 1812). Network managers of legacy IP networks could use the
above-mentioned values to define filters on their routers to take
advantage of priority queuing.
You can find references on the DS field under the IETF working group
DiffServ. For more information, please refer to the following RFC
documents:
Definition of the Differentiated Services Field (DS Field)
in the IPv4 and IPv6 Headers (RFC 2474)
An Architecture for Differentiated Services (RFC 2475)
Assured Forwarding PHB Group (RFC 2597)
An Expedited Forwarding PHB (RFC 2598)
802.1q Section
The 802.1q standard recommends the use of the 802.1q VLAN tags for
Ethernet frames traffic prioritization. VLAN tags are 4-byte headers in
which three bits are reserved for priority indication.
VLANs are created with standard Layer 2 Ethernet. A VLAN Identifier
(VID) is associated with each VLAN. VLANs aim to offer the following
benefits:
VLANs are supported over all IEEE 802 LAN MAC
protocols, and over shared media LANs as well as point-
to-point LANs.
VLANs facilitate easy administration of logical groups of
stations that can communicate as if they were on the
same LAN. They also facilitate easier administration of
moves, adds, and changes in members of these groups.
Traffic between VLANs is restricted. Bridges forward
unicast, multicast, and broadcast traffic only on LAN
segments that serve the VLAN to which the traffic
belongs.
As far as possible, VLANs maintain compatibility with
existing bridges and end stations.
Warning:
If you enable 802.1q and set a VLAN ID for the
AT-VP504E FXO, the Web pages, TFTP and Syslog must be on a
computer (Network Card) set with the same VLAN ID.
Summary of Contents for AT-VP504E FXS
Page 1: ...AT VP504E FXO H 323 Administration Manual PN 990 11592 10 Rev C VoIPTalk...
Page 16: ...Chapter 1 Introducing the AT VP504E FXO Administration Manual H 323 Version AT VP504E FXO 8...
Page 76: ...Chapter 5 Software Upgrade Administration Manual H 323 Version AT VP504E FXO 68...
Page 100: ...Appendix C Gatekeeper Registration Logic Administration Manual H 323 Version AT VP504E FXO 92...
Page 112: ...Index Administration Manual H 323 Version AT VP504E FXO 104...