DETAILED STEPS
Command or Action
Purpose
Step 1
Console> (enable) set vlanvlan_num [namename ] type trbrf [state {active |
suspend}] [mtumtu ] bridgebridge_number [stp {ieee | ibm | auto}]
From the supervisor module, defines the
TrBRF that you will associate to TrCRF
as a parent
Step 2
Console> (enable) set vlanvlan_num [namename ] type trcrf [state {active |
suspend}] [mtumtu ] ringring_numberparentvlan_num [mode {srt | srb}]
[backupcrf {off | on}] [aremaxhophopcount ] [stemaxhophopcount ]
From the supervisor module, defines the
TrCRF for which you are creating a LEC.
Setting Up the Token Ring VLAN on a LEC
To set up the LEC for the Token Ring VLAN and corresponding ELAN, use the following commands on
the ATM module beginning in global configuration mode:
SUMMARY STEPS
1.
ATM(config)# interface atmnumber [.subinterface-number ]
2.
ATM(config-if)# lane client tokenring vlan_id[elan-name1 ]
3.
ATM(config-if)# exit
4.
ATM(config)# copy running-config startup-config
DETAILED STEPS
Command or Action
Purpose
Step 1
ATM(config)# interface atmnumber
[.subinterface-number ]
Specifies the subinterface for an ELAN on this switch and enters
interface configuration mode.
Step 2
ATM(config-if)# lane client tokenring
vlan_id[elan-name1 ]
Creates a LEC for the first ELAN and specifies the VLAN number and
the ELAN name to which to bind the LEC.
Step 3
ATM(config-if)# exit
Exits configuration mode.
Step 4
ATM(config)# copy running-config startup-
config
Saves the configuration.
Configuring Redundant LANE Services
The LANE protocol does not specify where any of the ELAN server entities should be located, but for the
purpose of reliability and performance, Cisco implements these server components on its routers and LAN
switches.
With Phase I LANE, only one LECS, capable of serving multiple ELANs, and only one LES per ELAN
could exist for an ATM cloud. The Phase I LANE protocol did not allow for multiple LESs within an
ELAN. Therefore, these components represented both single points of failure and potential bottlenecks for
LANE service.
LANE LES/BUS and LECS redundancy corrects these limitations by allowing you to configure redundant
LES/BUSs so that the LECs in an ELAN can automatically switch to a backup LES if the primary LES
fails. The priority of the LES/BUS pairs is established by the order in which they are entered in the LECS
Configuring Redundant LANE Services
Setting Up the Token Ring VLAN on a LEC
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