3Com Switch 7750 SeriesCommand Reference Guide – Routing Protocol Chapter 4 Integrated IS-IS Configuration Commands4-2DescriptionUse the area-authentication-mode command to configure IS-IS to authenticate thepackets (LSP, CSNP and PSNP) received from level-1 route using the predefinedmode and password.Use the undo area-authentication-mode command to disable IS-IS fromauthenticating the received packets above.The system will neither authenticate the packets received from level-1 route nor checkits password by default.We can use this command to clear all leve-1 routing packets not compatible with thearea authentication password set by the command. And at the same time, we alsoinstruct the system to follow a specific mode to insert the area authenticationpassword in all the level-1 routing packets sent from the local node.Related command: reset isis all, domain-authentication-mode, and isisauthentication-mode.Example# Set the area authentication password to hello, and the authentication mode tosimple.<3Com> system-viewSystem View: return to User View with Ctrl+Z.[3Com] isis[3Com-isis] area-authentication-mode simple hello4.1.2 cost-styleSyntaxcost-style { narrow | wide | wide-compatible | { compatible | narrow-compatible }[ relax-spf-limit ] }undo cost-styleViewIS-IS viewParameternarrow: Specifies to receive and send narrow packets only.wide: Specifies to receive and send wide packets only.compatible: Specifies to receive or send both wide and narrow packets.narrow-compatible: Specifies to receive both narrow and wide packets, but sendonly narrow packets.
