Tagging Routes: Example; Configuring Is-Is Overload Bit Avoidance: Example; Example: Configuring Is-Is To Handle Router Overload - Cisco ASR 9000 Series Routing Configuration Manual

Tagging Routes: Example

Tagging Routes: Example
The following example shows how to tag routes.
route-policy isis-tag-55
end-policy
!
route-policy isis-tag-555
end-policy
!
router static
address-family ipv4 unicast
!
!
router isis uut
net 00.0000.0000.12a5.00
address-family ipv4 unicast

Configuring IS-IS Overload Bit Avoidance: Example

The following example shows how to activate IS-IS overload bit avoidance:
config
mpls traffic-eng path-selection ignore overload
The following example shows how to deactivate IS-IS overload bit avoidance:
config
no mpls traffic-eng path-selection ignore overload

Example: Configuring IS-IS To Handle Router Overload

This section describes an example for configuring IS-IS to handle overloading of routers, without setting the
overload bit.
When a router is configured with the IS-IS overload bit, it participates in the routing process when the overload
bit is set, but does not forward traffic (except for traffic to directly connected interfaces). To configure the
overload behavior for IS-IS, without setting the overload bit, configure the max-link-metric statement. By
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
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if destination in (5.5.5.0/24 eq 24) then
set tag 555
pass
else
drop
endif
0.0.0.0/0 2.6.0.1
5.5.5.0/24 Null0
metric-style wide
redistribute static level-1 route-policy isis-tag-555
spf prefix-priority critical tag 13
spf prefix-priority high tag 444
spf prefix-priority medium tag 777
Implementing IS-IS