AIS AI2524 user manual Configure Cmns Routing, Enable Cmns on an Interface

AI2524 Router Card User’s Manual

Configure CMNS Routing

connection establishment fails, the next destination will be tried. Up to six XOT destination addresses can be entered.

To configure an XOT route with alternate addresses, thus adding it to the X.25 routing table, type (in global configuration mode):

x25 route [#position] x121-address [cud pattern]

ip ip-address [ip-address2... [ip- address6]]

The sequence of alternate destination XOT host addresses is simply added to the normal XOT route configuration command.

Note:	It can take up to 50 seconds to try an alternate route due
	to TCP timings.

The Connection-Mode Network Service (CMNS) provides a mecha nism through which local X.25 switching can be extended to nonserial media through the use of OSI-based NSAP addresses. This implemen- tation runs packet-level X.25 over frame-level LLC2.

The AI2524 CMNS implementation allows LAN-based OSI re sources, such as a DTE host and a Sun workstation, to be intercon- nected to each other via the router's LAN interfaces and to a remot OSI-based DTE through a WAN interface using, for example, an X.25 Packet-Switched Network (PSN).

Note:	CMNS is implicitly enabled whenever an X.25
	encapsulation is included with a serial interfac
	configuration.

All local mapping is performed by the static mapping of MAC ad- dresses and X.121 addresses to NSAP addresses.

Implementing CMNS routing involves completing these tasks:

zEnable CMNS on an Interface

zSpecify a CMNS Static Map of Addresses

Enable CMNS on an Interface

In interface configuration mode, enable CMNS on a nonserial inter- face:

cmns enable

Page 12-40	August 1997
	2524UM