Use Of Frame Relay And Atm Services; Internet Protocols And Ports Used By Ip Trunk 3.01 (And Later) - Nortel 1000 Description, Installation And Operation Manual

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Use of Frame Relay and ATM services

Internet Protocols and ports used by IP Trunk 3.01 (and later)

553-3001-363 Standard 2.00
ITG engineering guidelines
IP can be transported over Frame Relay and ATM services, both of which
provide QoS-based delivery mechanisms. If the router can discern IP Trunk
3.01 (and later) traffic by inspecting the TOS field or observing the UDP port
numbers, it can forward the traffic to the appropriate Permanent Virtual
Circuit (PVC) or Switched Virtual Circuit (SVC). At the data link layer, the
differentiated virtual circuits must be provisioned. In Frame Relay, the
differentiation is created by having both "zero-Committed Information Rate
(CIR)" and CIR-based PVCs; in ATM, differentiation is created by having
VCs with different QoS classes.
The following IP applications and protocols are used by IP Trunk 3.01 (and
later) and must be transmitted across the customer's intranet by all IP routers
and other network equipment. This information should be validated and
included in the IP Trunk 3.01 (and later) network engineering guidelines.
Customers using firewalls must be aware of all UDP and TCP ports being
used by IP Trunk 3.01 (and later) and provision their equipment accordingly.
IP Trunk 3.01 (and later) management protocols
IP Trunk 3.01 (and later) uses the UDP and TCP port numbers for SNMP,
Telnet, and FTP (the default port numbers for these common IP applications).
IP Trunk 3.01 (and later) management LAN ports
In addition to the TCP and UDP ports used for standard IP applications, there
are IP trunk-specific ports used. Messages sent between the DCHIP Leader
card and other cards use TCP port 6001. When the Backup Leader card and
the Follower cards boot up, they obtain their IP address from the Leader card
over UDP ports 67 – 68.
IP Trunk 3.01 (and later) H.323 Voice Gateway Protocols
H.225 Call Setup Signaling uses TCP port 1720 for the destination port.
H.323 Register and Admission Signaling (RAS) uses UDP port 1719. RAS is
used when registering with a Signaling Server Gatekeeper.
September 2004