3Com Router User Manual

Configuration of DLSw 387
forwarding. This command is used to specify the virtual MAC address on the 
interface, thus providing source MAC address for transforming SDLC message into 
LLC2 message.
Please process the following configurations in the synchronous interface view.
Ta b l e 434   Configure SDLC virtual MAC address
There is no SDLC virtual MAC address by default.
Note that there are two forms of SDLC virtual MAC address: one is not followed 
by sdlc-address, in this form, the address to be...

388CHAPTER 25: CONFIGURING DLSW
partner shall be the MAC address of the remote end SNA equipment (physical 
addresses of such equipment as Ethernet and Token-Ring) or next-hop MAC 
address composed of SDLC.
Please process the following configurations in the synchronous interface view.
Ta b l e 436   Configure SDLC peer entity
By default, synchronous interface is not configured with SDLC peer entity.
Note the differences between the word digital order of Token-Ring and Ethernet. 
When configuring...

Configuration of DLSw 389
12Configure to Stop Running DLSw
Please carry out the following configuration under overall view.
Ta b l e 439   Configure to stop running DLSw
By default, the system does not run DLSw protocol.
After using this command, the system will release all the dynamic resources but 
reserve the existing configuration.
13Configure Baud Rate of Sync Interface
All of the above commands are some of basic commands for configuring DLSw. 
SNA equipment have diversified sorts and quite...

390CHAPTER 25: CONFIGURING DLSW
Ta b l e 442   Configure Idle time encoding mode of synchronous Interface
By default, the synchronous interface uses encoding mode 7E.
Generally, the idle time encoding mode of synchronous interface doesnt need to 
be modified. You may need to configure this command when connecting AS/400, 
that is, to change the idle time encoding mode in order to accelerate the polling 
rate of AS/400.
16Configure Parameters of DLSw Timer
The values of various timers used when DLSw...

Configuration of DLSw 391
LLC2 pre-answer refers to sending answer packet to the peer in advance after 
receiving the specified amount of packets. This parameter and local answer 
display time in 1 controls the time to send answer packet together. If any 
condition is satisfied, the answer packet will be sent, that is, it sends 
acknowledgement message to the other part in advance after receiving the nth 
message.
Please process the following configurations in the Ethernet interface view.
Ta b l e 445...

392CHAPTER 25: CONFIGURING DLSW
Ta b l e 448   Configure retransmission number of LLC2
By default, the retransmission number of LLC2 is 20.
fConfigure LLC2 Local Acknowledgement Time
LLC2 local acknowledgement time refers to max wait time for waiting for the 
other parts acknowledgement after sending a piece of LLC2 data message.
Please process the following configurations in the Ethernet interface view.
Ta b l e 449   Configure LLC2 local acknowledgement time
By default, LLC2 local acknowledgement time...

Configuration of DLSw 393
Ta b l e 452   Configure REJ status time of LLC2
By default, REJ status time of LLC2 is 500 ms.
jConfigure Queue Length of Sending Message of LLC2
Please process the following configurations in the Ethernet interface view.
Ta b l e 453   Configure queue length of sending message of LLC2
By default, the queue length of sending message of LLC2 is 50.
18Configure Other Parameters of SDLC
aConfigure Queue Length of Sending Message of SDLC
Please process the following configurations...

394CHAPTER 25: CONFIGURING DLSW
By default, the modulo value of SDLC is 8.
dConfigure Maximum Receivable Frame Length N1 of SDLC
Maximum frame length of SDLC refers to byte number of maximum 
transmissible and receivable message, not including parity bit and stop bit.
Please process the following configurations in the synchronous interface view.
Ta b l e 457   Configure maximum receivable frame length of SDLC
By default, the maximum receivable frame length of SDLC is 265 bytes. 
Generally, the length is...

Configuration of DLSw 395
Ta b l e 460   Configure SAP address for transforming SDLC to LLC2
By default, both LSAP and DSAP of LLC2 are 04.
hConfigure Data Bi-directional Transmission Mode of SDLC
This command is used to allow the synchronous serial port of the encapsulated 
SDLC protocol to work in the bi-directional data transmission mode. In other 
words, you can restore the time to wait for a reply used by secondary station to 
the default value
Please process the following configurations in the...

396CHAPTER 25: CONFIGURING DLSW
Ta b l e 463   Configure acknowledgement wait time T2 of SDLC secondary station
By default, the acknowledgement wait time T2 of SDLC secondary station is 
configured to be 500 ms.
Display and Debug 
DLSwTa b l e 464   Display and debug DLSw
Ty p i c a l  D L S w  
Configuration 
Example
DLSw Configuration of 
LAN-LANI. Networking Requirement
LAN-LAN working mode is used. The two running SNA and LAN are connected by 
IP across WAN.
OperationCommand
Configure acknowledgement...