Cisco Systems BC-281 manual Local router, BC-304

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Configuring Data-Link Switching Plus

DLSw+ Configuration Task List

For multiple peer connections, peer costs must be applied. The DLSw+ Enhanced Load Balancing feature works only with the lowest (or equal) cost peers. For example, if the user specifies dlswrtr1, dlswrtr2 and dlswrtr3 with costs of 4, 3, and 3 respectively, DLSw+ establishes new circuits with only dlswrtr 2 and dlswrtr3.

To enable the DLSw+ Enhanced Load Balancing feature on the local router, use the following command in global configuration mode:

Command

Purpose

 

 

Router(config)# dlsw load-balance [round-robin

Configures the DLSw+ Enhanced Load Balancing feature on the

circuit count circuit-weight]

local router.

 

 

To adjust the circuit weight for a remote peer with TCP encapsulation, use the following command in global configuration mode:

Command

Purpose

 

 

Router(config)# dlsw remote-peer tcp

Adjusts the circuit weight on the remote peer.

[circuit-weight value]

 

 

 

To adjust the circuit weight for a remote peer with DLSw+ Lite encapsulation, use the following command in global configuration mode:

Command

Purpose

 

 

Router(config)# dlsw remote-peer frame-relay

Adjusts the circuit weight on the remote peer.

interface serial number dlci number

 

[circuit-weight value]

 

 

 

The circuit-weight of a remote peer controls the number of circuits that peer can take. If multiple, equally low-cost peers can reach a remote source, the circuits to that remote source are distributed among the remote peers based on the ratio of their configured circuit-weights. The peer with the highest circuit-weight takes more circuits.

Because a DLSw+ peer selects its new circuit paths from within its reachability cache, the user must configure the dlsw timer explorer-wait-timecommand with enough time to allow for all the explorer responses to be received. If the new DLSw+ Enhanced Load Balancing Feature is enabled, a message is displayed on the console to alert the user if the timer is not set.

To configure the amount of time needed for all the explorer responses to be received, use the following command in global configuration mode:

Command

Purpose

 

 

Router(config)# dlsw timer {explorer-wait-time}

Sets the time to wait for all stations to respond to explorers.

 

 

See the DLSw+ Design and Implementation Guide for details on how to configure load balancing in DLSw+. Refer to the “DLSw+ with Enhanced Load Balancing Configuration Example” section on page 327 for a sample configuration.

 

Cisco IOS Bridging and IBM Networking Configuration Guide

BC-304

78-11737-02

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Contents Configuring Data-Link Switching Plus BC-281DLSw Standard DLSw Version 2 StandardIP Multicast BC-282DLSw+ Features Enhanced Peer-on-Demand Routing FeatureUDP Unicast Expedited TCP ConnectionLocal Acknowledgment BC-284BC-285 LLC2 Session without Local AcknowledgmentBC-286 DLSw+ Support for Other SNA Features BC-287Command Purpose Defining a DLSw+ Local Peer for the RouterDefines the DLSw+ local peer Following is a sample dlsw local peer statementDefining a DLSw+ Remote Peer TCP EncapsulationBC-289 TCP/IP with RIF Passthrough Encapsulation FST EncapsulationDefines a remote peer with FST encapsulation BC-290Direct Encapsulation DLSw Lite EncapsulationDefines a remote peer with direct encapsulation Defines a remote peer with DLSw Lite encapsulationMapping DLSw+ to a Local Data-Link Control Token RingBC-292 Ethernet BC-293Enables DLSw+ on an Sdlc interface Associated with this serial interfaceBC-294 Configuring Advanced Features BC-295Scalability Peer Groups and Border PeersBC-296 BC-297 Enables peer groups and border peers BC-298Configures peer-on-demand defaults Local, remote, and group cachesBC-299 Displays content of group, local and remote caches NetBIOS Dial-on-Demand RoutingFollowing command enables NetBIOS DDR Explorer FirewallsFollowing command configures the SNA DDR feature UDP Unicast FeatureSNA Dial-on-Demand Routing BC-301Configures a dynamic peer Promiscuous Peer DefaultsLLC1 Circuits Dynamic PeersConfigures promiscuous peer defaults AvailabilityLoad Balancing BC-303Local router BC-304Configures transparent redundancy Backup PeersEthernet Redundancy Addresses on a transparent bridged are mappedConfigures a backup peer Modes of OperationBC-306 Access Control Network ManagementTraffic Bandwidth and Queueing Management BC-307Defines a port list DLSw+ Bridge Group ListBC-308 Filter Lists in the Remote-Peer Command Static PathsStatic Resources Capabilities Exchange BC-309Configuring DLSw+ Timers BC-310BC-311 Following sections provide DLSw+ configuration examples BC-312Router a Router BBC-313 BC-314 DLSw+ with Peer Groups Specified ExampleRouter C BC-315BC-316 FEPRouter D BC-317DLSw+ with Sdlc Multidrop Support Configuration Examples Router EFollowing example, all devices are type PU BC-318Following example, all devices are type PU 2.1 Method BC-319BC-320 Hostname Router aBC-321 DLSw+ Translation Between Fddi and Token RingDLSw+ Translation Between Sdlc and Token Ring Media Example BC-322BC-323 Sdlc partner 1000.5aed.1f53 d2 sdlc dlsw d2DLSw+ over Frame Relay Configuration Example RingBC-324 DLSw+ over Qllc Configuration Examples Following three examples describe Qllc support for DLSw+Example BC-325DLSw+ with RIF Passthrough Configuration Example BC-326DLSw+ with Enhanced Load Balancing Configuration Example BC-327DLSw+ Peer Cluster Feature Configuration Example BC-328DLSWRTR2 BC-329Shows a DLSw+ border peer network configured with DLSw+ Rsvp BC-330DLSw+ with Ethernet Redundancy Configuration Example BC-331DLSw+ with Ethernet Redundancy in a Switched Environment BC-332BC-333 BC-334
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