3. Configuration
9123-A2-GB20-20
August 2001
3-17
Configuring Frame Relay and LMI for the System
Select Frame Relay and LMI from the System menu to display or change the
Frame Relay and LMI options for the entire system (see
).
Main Menu
→
Configuration
→
System
→
Frame Relay and LMI
To configure these options, Service Type on the Easy Install screen must be set to
Frame Relay. See
Configuring Frame Relay for an Interface
on page 3-34 to set an
interface’s frame relay options.
Table 3-1.
System Frame Relay and LMI Options (1 of 3)
LMI Behavior
Possible Settings: Independent,
Port-1_Follows_Net1-FR1,
Net1-FR1_Follows_Port-1,
Port-1_Codependent_with_Net1-FR1
Default Setting: Independent
Configures the device to allow the state of the LMI to be passed from one interface to
another, determining how the unit will handle a change in the LMI state. Sometimes
referred to as LMI pass-through.
Independent – Handles the LMI state of each interface separately so that the LMI state of
one interface has no effect on the LMI state of another interface. Provides LMI Spoofing.
This is the recommended setting when backup is configured, and for Network Service
Providers (NSPs).
Net1-FR1_Follows_Port-1 – Brings LMI down on the network interface when LMI on
Port-1 goes down, disabling the network interface and deasserting its control leads. When
LMI on Port-1 comes back up, the network interface is reenabled. The LMI state on the
network interface has no effect on the LMI state on Port-1. That is, the network interface’s
LMI follows Port-1’s LMI. Used at central sites, this setting is useful when the remote site
router on the other end of the PVC connection can initiate recovery via a redundant
central site when there is a catastrophic central site LAN or router failure. Not
recommended for NSPs.
Port-1_Follows_Net1-FR1 – Brings LMI down on Port-1 when LMI on the network
interface goes down, disabling Port 1 and deasserting its control leads. When LMI on the
network interface comes back up, Port-1 is reenabled and its control leads are reasserted.
The LMI state on Port-1 has no effect on the LMI state on the network interface. That is,
Port-1’s LMI follows the network interface’s LMI. This setting is useful if the router
connected to Port-1 is used to initiate recovery when network failures are detected.
Port-1_Codependent_with_Net1-FR1 – Brings LMI down on the network interface when
LMI on Port-1 goes down (or LMI down on Port-1 when LMI on the network interface goes
down), and allows LMI to come back up when LMI comes back on the other interface.
That is, the LMI state for one interface is dependent on the other. Use this setting when
backup is through the router instead of the unit. It is
not recommended since it makes fault
isolation more difficult.
Содержание FrameSaver FLEX 9123
Страница 1: ...FrameSaver FLEX 9123 User s Guide Document No 9123 A2 GB20 20 August 2001 ...
Страница 10: ...Contents viii August 2001 9123 A2 GB20 20 ...
Страница 24: ...1 About the FrameSaver FLEX 9123 1 10 August 2001 9123 A2 GB20 20 ...
Страница 34: ...2 User Interface and Basic Operation 2 10 August 2001 9123 A2 GB20 20 ...
Страница 98: ...3 Configuration 3 64 August 2001 9123 A2 GB20 20 ...
Страница 194: ...7 Setting Up OpenLane for FrameSaver Devices and Activating SLV Capability 7 10 August 2001 9123 A2 GB20 20 ...
Страница 212: ...8 Setting Up NetScout Manager Plus for FrameSaver Devices 8 18 August 2001 9123 A2 GB20 20 ...
Страница 228: ...A Menu Hierarchy A 6 August 2001 9123 A2 GB20 20 ...
Страница 258: ...B SNMP MIBs and Traps and RMON Alarm Defaults B 30 August 2001 9123 A2 GB20 20 ...
Страница 266: ...C Connectors Cables and Pin Assignments C 8 August 2001 9123 A2 GB20 20 ...