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Configuring Data-Link Switching Plus
DLSw+ Configuration Task List
BC-304
Cisco IOS Bridging and IBM Networking Configuration Guide
78-11737-02
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:
To adjust the circuit weight for a remote peer with TCP encapsulation, use the following command in
global configuration mode:
To adjust the circuit weight for a remote peer with DLSw+ Lite encapsulation, use the following
command in global configuration mode:
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-time command 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:
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.
Command Purpose
Router(config)# dlsw load-balance [round-robin |
circuit count circuit-weight]
Configures the DLSw+ Enhanced Load Balancing feature on the
local router.
Command Purpose
Router(config)# dlsw remote-peer tcp
[circuit-weight value]
Adjusts the circuit weight on the remote peer.
Command Purpose
Router(config)# dlsw remote-peer frame-relay
interface serial number dlci number
[circuit-weight value]
Adjusts the circuit weight on the remote peer.
Command Purpose
Router(config)# dlsw timer {explorer-wait-time}
Sets the time to wait for all stations to respond to explorers.