Mfr interface and physical interface, 5 references, 2 configuring frame relay – Nortel Networks 8000 User Manual
Page 299: 1 establishing the configuration task, Applicable environment, 1 establishing the configuration task -9, 5 references -9, 2 configuring frame relay -9, References
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Nortel Secure Router 8000 Series
Configuration -WAN Access
8 Frame relay configuration
One MFR interface corresponds to one bundle, which may contain multiple bundle links. One
bundle link corresponds to one physical interface. A bundle manages its bundle links. The
relationship between bundle and bundle link is illustrated as follows:
Figure 8-3
Schematic diagram of bundle and bundle links
Bundle Link
Bundle Link
Bundle Link
Bundle
For the real physical layer, the bundle link is visible, and for the real data link layer, only the
bundle is visible.
MFR interface and physical interface
Multiple physical interfaces are logical interfaces that you can bundle into one MFR interface.
When you configure the bundle and bundle links you configure the MFR interface and
physical interfaces.
The configuration procedure and functions of an MFR interface are the same as those of an
FR interface. It also supports DTE and DCE interface types as well as QoS queue mechanism.
After you bundle the physical interfaces into an MFR interface you use parameters on this
MFR interface, because the originally configured parameters on the network layer and FR
link layer no longer work.
8.1.5 References
For more information on FR, refer to the RFC1490: Multi-protocol Interconnect over FR.
8.2 Configuring frame relay
8.2.1 Establishing the configuration task
Applicable environment
Frame relay is a high-speed packet switching technology developed based on the X.25
technology that implements bandwidth multiplexing and dynamic allocation. FR also provides
a reasonable bandwidth management and a mechanism to avoid congestion.
FR has two types of protocols: Internet Engineering Task Force (IETF) and nonstandard.
You use IETF to encapsulate the packets according to RFC 1490 specifications and
nonstandard to interconnect with routers of other vendors.
In FR, both the communicating parties are distinguished as DTE and DCE where you
configure the interface in the DTE or DCE format according to their location in the network.
The FR module has two types of interfaces:
• Main interface
Issue 5.3 (30 March 2009)
Nortel Networks Inc.
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