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3Com Switch 7750 Series
Command Reference Guide – Routing Protocol Chapter 4 Integrated IS-IS Configuration Commands
4-30
clns: IS-IS routing preference based on OSI protocol stack, in the range of 1 to 1,255.
It is IP-based preference by default.
ip: IS-IS routing preference based on IP protocol stack, in the range of 1 to 255.
Description
Use the preference command to configure IS-IS protocol preference.
Use the undo preference command to resume the default IS-IS protocol preference.
When a router runs multiple dynamic routing protocols at the same time, the system
will configure a preference for each routing protocol. If several protocols find routes to
the same destination, the one with the highest preference dominates.
Example
# Configure the preference of IS-IS protocol as 25.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] isis
[3Com-isis] preference 25
4.1.34 reset isis all
Syntax
reset isis all
View
User view
Parameter
None
Description
Use the reset isis all command to clear all ISIS data structure information.
The IS-IS data information will not be cleared by default.
This command is used when a LSP need to be updated immediately. For example,
after performing the area-authentication-mode and domain-authentication-mode
commands, if the router still has some old LSPs, you can use this command to clear
these LSPs.
Related command: area-authentication-mode, and domain authentication-mode.
Example
# Clear all IS-IS data structure.