router# no
05:13.094 serial0/0 HDLC I(len=22):lmi peer_seq=162,local's=166de
05:13.753 %HDLC serial0/0 Keepalive
05:13.753 serial0/0 HDLC O(len=22):lmi local_seq=167,peer's=162
4.6 SNA
4.6.1 Introduction
Switch-to-Switch Protocol (SSP) is a protocol specified in the DLSw standard that routers use to establish DLSw connections, locate resources, forward data, and handle flow control and error recovery.
SSP provides encapsulation on TCP/IP and makes use of the reliable data transmission of TCP/IP between DLSw peers.
dlsw local-peer [ biu-segment bprder cost group init-pacing-window keepalive lf passive peer-id promisecuous] – Define dlsw local peer
dlsw remote-peer list tcp ip address [ backup cost dmac-output-list dynamic inactivity keepalive lf linger lsap-output-list no-llc passive priority tcp-queue-max timeout ] – Define TCP encapsulation on DLSw Remote peer
dlsw bridge-group– link DLSw to the bridge group
dlsw timers [connect-timeout explorer-delay-time explorer-wait-time icannotreach-block-time local-connect-timeout sna-cache-timeout sna-explorer-timeout sna-group-cache sna-retry-interval sna-verify-interval] – define
the dlsw timers
Encapsulation sdlc – encapsulation type to sdlc
sdlc address – assign the secondary stations attached to primary station sdlc holdq – set max number of packet hold in queue
sdlc k – set the local window size
sdlc n1 –set the max size of incoming frame
sdlc n2 - Set the number of times a Cisco IOS software will retry an operation that has timed out
sdlc ip-subnet– specify IP subnet
sdlc partner - Specify the destination address with which an LLC session is established for the SDLC station