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386 CHAPTER 25: CONFIGURING DLSW
Please process the following configurations in the Ethernet interface view.
Table 431 Configure to add ethernet port to Bridge set
No Ethernet port is added to Bridge set by default.
5 Configure Link Layer Protocol for Interface Encapsulation as SDLC
SDLC is a link layer protocol relative to SNA. The working principle is very similar to
HDLC. To allow DLSw to operate normally, the encapsulation protocol of
synchronous interface link layer should be changed to SDLC.
Please process the following configurations in the synchronous interface view.
Table 432 Configure link layer protocol for Interface encapsulation to be SDLC
By default, the link layer protocol of synchronous interface encapsulation is PPP.
Note that SDLC link protocol cannot load IP protocol, so you should remove all of
the commands related with IP, such as delete interface IP address, before
encapsulating SDLC.
6 Configure SDLC Role
SDLC is a link layer protocol in the unbalanced mode. In another words, the
connected equipment on the both ends does not have unequal priority. One of the
parts is the primary station that plays the leading role and controls the whole
connection process and its role is primary. The other part is the secondary station
that is controlled in a passive mode and its role is secondary. Subscribers need to
configure role for the interface encapsulated with SDLC protocol.
Please process the following configurations in the synchronous interface view.
Table 433 Configure SDLC role
SDLC role shall be configured according to the role of SDLC equipment connecting
with this router. If SDLC equipment connecting with the interface is primary, the
interface should be set to secondary. If the connected equipment is secondary, the
interface should be set to primary.
Generally, the central IBM mainframes are primary, and terminal equipment is
secondary, such as Unix host and ATM machine.
7 Configure SDLC Virtual MAC Address
Originally, DLSw is designed for LLC2 type of protocol to establish the mapping
relationship of virtual circuit through MAC address. Thus, you have to specify MAC
address for SDLC virtual circuit in order to allow SDLC message to participate in
Operation Command
Configure to add Ethernet port to Bridge set bridge-set
bridge-set-number
Delete the configuration of adding Ethernet port to
Bridge set
undo bridge-set
Bridge-set-number
Operation Command
Configure link layer protocol for interface encapsulation
to be SDLC
link-protocol sdlc
Operation Command
Configure SDLC role sdlc status { primary | secondary }
Delete SDLC role undo sdlc status