H3C S7500 Series Ethernet Switches Command Manual

Table Of Contents
Command Manual – Routing Protocol
H3C S7500 Series Ethernet Switches Chapter 4 Integrated IS-IS Configuration Commands
4-30
4.1.33 preference
Syntax
preference value [ clns | ip ]
undo preference [ clns | ip ]
View
IS-IS view
Parameters
value: Preference value in the range of 1 to 255. It is 15 by default.
clns: IS-IS routing preference based on OSI protocol stack, in the range of 1 to 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.
Examples
# Configure the preference of IS-IS protocol as 25.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] isis
[H3C-isis] preference 25
4.1.34 reset isis all
Syntax
reset isis all
View
User view
Parameters
None