Cisco WS-X5161 Manual - Halaman 22

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Setting Up the Token Ring VLAN on a LEC

DETAILED STEPS

Command or Action

Step 1 Console> (enable) set vlanvlan_num [namename ] type trbrf [state {active |

suspend}] [mtumtu ] bridgebridge_number [stp {ieee | ibm | auto}]

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 ]

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

Step 1 ATM(config)# interface atmnumber

[.subinterface-number ]

Step 2 ATM(config-if)# lane client tokenring

vlan_id[elan-name1 ]

Step 3 ATM(config-if)# exit

Step 4 ATM(config)# copy running-config startup-

config

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

Purpose

Specifies the subinterface for an ELAN on this switch and enters

interface configuration mode.

Creates a LEC for the first ELAN and specifies the VLAN number and

the ELAN name to which to bind the LEC.

Exits configuration mode.

Saves the configuration.

Configuring Redundant LANE Services

Purpose

From the supervisor module, defines the

TrBRF that you will associate to TrCRF

as a parent

From the supervisor module, defines the

TrCRF for which you are creating a LEC.