Configuring Data-Link Switching Plus | Cisco Systems BC-281 instruction

Configuring Data-Link Switching Plus

This chapter describes how to configure data-link switching plus (DLSw+), Cisco’s implementation of the DLSw standard for Systems Network Architecture (SNA) and NetBIOS devices. Refer to the DLSw+ Design and Implementation Guide for more complex configuration instructions. For a complete description of the DLSw+ commands mentioned in this chapter, refer to the “DLSw+ Commands” chapter of the Cisco IOS Bridging and IBM Networking Command Reference (Volume 1 of 2). To locate documentation of other commands that appear in this chapter, use the command reference master index or search online.

This chapter contains the following sections:

•Technology Overview, page 281

•DLSw+ Configuration Task List, page 288

•Verifying DLSw+, page 310

•Monitoring and Maintaining the DLSw+ Network, page 311

•DLSw+ Configuration Examples, page 312

To identify the hardware platform or software image information associated with a feature, use the Feature Navigator on Cisco.com to search for information about the feature or refer to the software release notes for a specific release. For more information, see the “Identifying Platform Support for Cisco IOS Software Features” section on page lv in the “Using Cisco IOS Software” chapter.

Technology Overview

DLSw+ is a method of transporting SNA and NetBIOS. It complies with the DLSw standard documented in RFC 1795 and the DLSw Version 2 standard. DLSw+ is an alternative to RSRB that addresses several inherent problems that exist in RSRB, such as:

•SRB hop-count limits (SRB’s limit is seven)

•Broadcast traffic (including SRB explorer frames or NetBIOS name queries)

•Unnecessary traffic (acknowledgments and keepalives)

•Data-link control timeouts

		Cisco IOS Bridging and IBM Networking Configuration Guide
		Cisco IOS Bridging and IBM Networking Configuration Guide
	78-11737-02			BC-281
	78-11737-02			BC-281

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Cisco Systems BC-281 manual Configuring Data-Link Switching Plus

Contents

BC-281 Configuring Data-Link Switching Plus DLSw Version 2 Standard DLSw StandardIP Multicast BC-282 Enhanced Peer-on-Demand Routing Feature DLSw+ FeaturesUDP Unicast Expedited TCP Connection BC-284 Local Acknowledgment LLC2 Session without Local Acknowledgment BC-285 BC-286 BC-287 DLSw+ Support for Other SNA Features Defining a DLSw+ Local Peer for the Router Command PurposeDefines the DLSw+ local peer Following is a sample dlsw local peer statement TCP Encapsulation Defining a DLSw+ Remote PeerBC-289 FST Encapsulation TCP/IP with RIF Passthrough EncapsulationDefines a remote peer with FST encapsulation BC-290 DLSw Lite Encapsulation Direct EncapsulationDefines a remote peer with direct encapsulation Defines a remote peer with DLSw Lite encapsulation Token Ring Mapping DLSw+ to a Local Data-Link ControlBC-292 BC-293 Ethernet Associated with this serial interface Enables DLSw+ on an Sdlc interfaceBC-294 BC-295 Configuring Advanced Features Peer Groups and Border Peers ScalabilityBC-296 BC-297 BC-298 Enables peer groups and border peers Local, remote, and group caches Configures peer-on-demand defaultsBC-299 NetBIOS Dial-on-Demand Routing Displays content of group, local and remote cachesFollowing command enables NetBIOS DDR Explorer Firewalls UDP Unicast Feature Following command configures the SNA DDR featureSNA Dial-on-Demand Routing BC-301 Promiscuous Peer Defaults Configures a dynamic peerLLC1 Circuits Dynamic Peers Availability Configures promiscuous peer defaultsLoad Balancing BC-303 BC-304 Local router Backup Peers Configures transparent redundancyEthernet Redundancy Addresses on a transparent bridged are mapped Modes of Operation Configures a backup peerBC-306 Network Management Access ControlTraffic Bandwidth and Queueing Management BC-307 DLSw+ Bridge Group List Defines a port listBC-308 Static Paths Filter Lists in the Remote-Peer CommandStatic Resources Capabilities Exchange BC-309 BC-310 Configuring DLSw+ Timers BC-311 BC-312 Following sections provide DLSw+ configuration examples Router B Router aBC-313 DLSw+ with Peer Groups Specified Example BC-314 BC-315 Router C FEP BC-316 BC-317 Router D Router E DLSw+ with Sdlc Multidrop Support Configuration ExamplesFollowing example, all devices are type PU BC-318 BC-319 Following example, all devices are type PU 2.1 Method Hostname Router a BC-320 DLSw+ Translation Between Fddi and Token Ring BC-321 BC-322 DLSw+ Translation Between Sdlc and Token Ring Media Example Sdlc partner 1000.5aed.1f53 d2 sdlc dlsw d2 BC-323 Ring DLSw+ over Frame Relay Configuration ExampleBC-324 Following three examples describe Qllc support for DLSw+ DLSw+ over Qllc Configuration ExamplesExample BC-325 BC-326 DLSw+ with RIF Passthrough Configuration Example BC-327 DLSw+ with Enhanced Load Balancing Configuration Example BC-328 DLSw+ Peer Cluster Feature Configuration Example BC-329 DLSWRTR2 BC-330 Shows a DLSw+ border peer network configured with DLSw+ Rsvp BC-331 DLSw+ with Ethernet Redundancy Configuration Example BC-332 DLSw+ with Ethernet Redundancy in a Switched Environment BC-333 BC-334