Configure DLSW Directory

How to use the configuration command of DLSw

How to use the displaying ability of DLSw

How to use the debug function of DLSw

How to use the management function of DLSw

   It is very helpful for the user to have some knowledge of DLSW before configuring DLSW.  Data Link SwitchingDLSwis a new type of tunneling or encapsulaton protocol and it can encapsulate the frame of Logical Link Control Type1LL1or Type2LL2coming from SNA and NetBIOS system and enables the frame to get across non-SNA framework network. The formulation of DLSw offers the solution to the limitation that LLC2 is not able to transmit on the wide area network (WAN) as the design of LLC2 is based on the local area network (LAN). DLSw also offers a solution to the transition from SNA network to TCP/IP network, enabling SNA and TCP/IP to co-exist.

DLSw is jointly made by multiple network developers and is designed for replacing the original various tunneling protocols. The development of DLSW module is based on the fact that the current banking system universally employs IBM mainframe and private SNA network framework system. DLSW module will follow the international standards of DLSW and implements the communication with DLSw+ of CISCO router.

How to use the configuration command of DLSw

Based on the implementation of DLSw of this version, the configuration command offered by the module can be used for the debug of DLSw, including the local configuration of DLSw, the remote configuration of DLSw, the configuration of reachable and unreachable resources of DLSw, configuring the static MAC address and bridge group communicable to DLSw, which have important impacts on the test of DLSw made by the user.

The command below can be used under global configuration mode:

Command

Purpose

dlsw local-peer  [peer-id ip-address] [cost cost] [lf size] [keepalive seconds] [init-pacing-window size] [max-pacing-window size] [promiscuous]

The command is used for configuring local peer of DLSW to designate local IP address connected with TCP. The “NO” format of the command can be used for anceling the configuration.

dlsw remote-peer list-number ip-address  [backup-peer ip-address [backup-static | linger minutes | circuit-inactivity minutes]] | [circuit-weight weight] | [cost cost] | [dynamic [inactivity minutes | no-llc minutes]] | [keepalive seconds] | [lf size] | [passive] | [priority [priority-vendor-id id-number]] | [tcp-queue-max size]

The command is used for configuring the remote peer to set up TCP channel. A router can be configured with multiple remote peers. The “NO” format of the command can used for canceling the configuration.

dlsw port-list list-number type number

The command is used for configuring the list based on the port. Through the application of list-number to the command “dlsw remote-peer”, the function of filtrating dlsw packet can be implemented. The “NO” format of the command can be used for canceling the configuration.

dlsw bgroup-list list-number bgroups number

The command is used for configuring the list based on bridge-group. Through the application of list-number to the command “dlsw remote-peer”, the function of filtrating dlsw can be implemented. The “NO” format of the command can be used for canceling the configuration.

dlsw timer {sna-cache-timeout | explorer-wait-time} time

The command is used for configuring some clock used by dlsw. The clocks that can be implemented and configured are: cache-timeout clock and clock waiting for the response of remote dlsw to explorer packets. The “NO” format of the command can be used for canceling the configuration.

dlsw load-balance [round-robin | circuit-count circuit weight]

The command is used for configuring the implementation of local or remote load-balance function on the local DLSw The “NO” format of the command can be used for canceling the configuration.

dlsw icanreach {mac-exclusive | mac-address mac-addr | saps}

The command is used for configuring the destination reachable to local DLSw. The “NO” format of the command can be used for canceling the configuration.

dlsw icannotreach saps sap [sap...]

The command is used for designating SAP unreachable to the local. The “NO” format of the command can be used for canceling the setting.

dlsw mac-addr mac-addr

The command is used for configuring the static MAC address. The “NO” format of the command is used for canceling the setting. The command is related to the local buffer and remote buffer.

dlsw bridge-group group-number [sap-priority list-number]

The command is used for configuring bridge group communicable to DLSw. The “NO” format of the command can be used for canceling the setting.

dlsw udp-disable

The command is used for closing down UDP send method of DLSw. The “NO” format of the command can be used for canceling the setting.

sap-priority-list list-number [high|medium|normal|low] [dmac mac-address] [smac mac-address] [dsap sap-value] [ssap sap-value]

The command is used for configuring the preference queue based on MAC/SAP. The “NO” format of the command can be used for canceling the setting.

 

How to use the displaying ability of DLSw

The command below can be used under management status and global configuration mode:

Command

Purpose

show dlsw capabilities [ ip-address ip-address | local]

Through displaying the information of exchange of capabilities, the user can have a better understanding of the various situations of occurring in the process of exchange of capabilities of DLSw. 

show dlsw circuits [detail] [mac-address address | sap-value value | circuit id]

Through displaying the virtual circuit of DLSw, the user can learn the status information of all the circuits.

show dlsw peers [ip-address ip-address ]

Through the command, the various information of remote DLSw can be displayed.

show dlsw reachability [[local | remote] | [mac-address address]

Through the command, the buffer information of DLSw can be displayed, including local buffer and remote buffer.

 

How to use the debug function of DLSw

When DLSw function is used on the router, the debug function of DLSw can be used for monitoring the running of DLSw.

The commnand below can be used under management status:

Command

Purpose

debug dlsw error

The command is used for exporting the erroneous debug information.

debug dlsw state [tcp ip-address | circuit circuit-id | explorer mac-address]

The command is used for exporting the debug information of internal state machine of DLSw

debug dlsw event [detail]

The command is used for exporting the debug information of internal state machine of DLSw

debug dlsw flow-control

The command is used for exporting the debug information of flow control processing.

debug dlsw packet

The command is used for exporting the debug information of internal state machine of DLSw

 

How to use the management function of DLSw

When DLSw function is used on the router, the management function of DLSw can be used for clearing the circuit of DLSw and statistic information.

The command below can be used under management status:

Command

Purpose

clear dlsw circuit [circuit-id]

The command is used for clearing the circuit of DLSw

clear dlsw reachability

The command is used for clearing the statistic information of DLSw.