Dear Community members,
I'm looking for a way to treat specific ISIS prefixes with a higher priority than other. I would like to tag them with a high priority tag.
In Cisco IOS you configure the tagging of local prefixes under the specific interface, and you instruct the isis process to give high or medium priority to specific tag.
Router(config)# int lo 0
Router(config-if)# isis tag 100
Router(config)#router isis
Router(config-router)# ip route priority high tag 100
Router(config-router)# ip route priority medium tag 200
I'm trying to accomplish the same thing in JUNOS and I believe that this can be done via a policy-option statement and then the application of the policy under the protocol isis hierarchy.
[edit policy-options policy-statement ISIS-HIGH-PRIORITY]
dele@test-mx00# show
term 1 {
from {
protocol isis;
tag 100;
}
then priority high;
}
term 2 {
from {
protocol direct;
route-filter 10.10.10.1/32 exact; (this is Lo0 IP address)
}
then {
tag 100;
priority high;
}
}
[edit protocols isis]
dele@test-mx00# show
export ISIS-HIGH-PRIORITY;
I would like to kindly ask you for a verification. I can see the tag set on the neighbor MX router.
dele@test-mx01# run show route 10.10.10.1
inet.0: 11876 destinations, 11972 routes (11875 active, 0 holddown, 1 hidden)
Restart Complete
+ = Active Route, - = Last Active, * = Both
10.10.10.1/32 *[IS-IS/18] 00:33:22, metric 10, tag 100
> to 192.168.10.1 via xe-0/0/0.0
to 192.168.10.5 via xe-0/0/1.0
Has ISIS in JunOS the ability to treat prefixes with a higher priority than other? How can I verify that this prefix will be treated via ISIS with higher priority than other non-tagged prefixes? The policy-statement is correct?
Best Regards
Dimitris