R3102-R3103-HP 6600/HSR6600 Routers Layer 3 - IP Routing Command Reference

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is formed within the nbr-timeout interval, IS-IS keeps the overload bit set; if not, the bit is cleared. IS-IS
keeps the overload bit set within the timeout1 interval after the neighbor relationship is formed within the
nbr-timeout interval.
• system-id: Specifies the neighbor.
• timeout1: The timeout1 interval is in the range of 5 to 86400 seconds and defaults to 600 seconds.
• nbr-timeout: The timer has an interval from 5 to 86400 seconds. The default is 1200 seconds.
timeout2: Sets the overload bit within the timeout2 interval after system startup. The interval is in the
range of 5 to 86400 seconds and defaults to 600 seconds.
allow: Allows advertising address prefixes. By default, no address prefixes are allowed to be advertised
when the overload bit is set.
external: Allows advertising IP address prefixes redistributed from other routing protocols with the allow
keyword specified.
interlevel: Allows advertising IP address prefixes learned from different IS-IS levels with the allow
keyword specified.
Usage guidelines
If the on-startup keyword is not specified, the command sets the overload bit immediately until the undo
set-overload command is executed.
If the on-startup keyword is specified, IS-IS sets the overload bit upon system startup and keeps it set
within the timeout2 interval.
Examples
# Set overload flag on the current router.
<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] set-overload
summary (IS-IS view)
Use summary to configure a summary route.
Use undo summary to remove a summary route.
Syntax
[ ipv4-unicast topology-name ] summary ip-address { mask | mask-length } [ avoid-feedback |
generate_null0_route | [ level-1 | level-1-2 | level-2 ] | tag tag ] *
undo [ ipv4-unicast topology-name ] summary ip-address { mask | mask-length } [ level-1 | level-1-2 |
level-2 ]
Default
No summarization is configured.
Views
IS-IS view
Default command level
2: System level