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Question about AS loop for instance-import

  • 1.  Question about AS loop for instance-import

    Posted 01-03-2022 05:43
    I have two virtual routers as follows:
    set routing-instances CE2-3 instance-type virtual-router
set routing-instances CE2-3 interface ge-0/0/6.320
set routing-instances CE2-3 interface lo0.12
set routing-instances CE2-3 routing-options instance-import CE2-3-rib-import
set routing-instances CE2-3 protocols bgp group ToR4 type external
set routing-instances CE2-3 protocols bgp group ToR4 local-as 64600
set routing-instances CE2-3 protocols bgp group ToR4 neighbor 192.168.0.77 peer-as 54591

set policy-options policy-statement CE2-3-bgp-export term 1 from protocol static
set policy-options policy-statement CE2-3-bgp-export term 1 then accept

set routing-instances CE2-4 instance-type virtual-router
set routing-instances CE2-4 interface ge-0/0/7.321
set routing-instances CE2-4 interface lo0.13
set routing-instances CE2-4 routing-options autonomous-system 64600
set routing-instances CE2-4 routing-options instance-import CE2-4-rib-import
set routing-instances CE2-4 protocols bgp group ToR5 type external
set routing-instances CE2-4 protocols bgp group ToR5 neighbor 192.168.0.81 peer-as 54591

set policy-options policy-statement CE2-4-bgp-export term 1 from protocol static
set policy-options policy-statement CE2-4-bgp-export term 1 then accept




​

    I happened to configure AS in two different ways, I thought they are the same.  But all the routes from CE2-3 are imported to CE2-4,  the routes from CE2-4 are hidden in CE2-3 as follows:

    root@CE2-3-4# run show route 192.168.0.80

CE2-4.inet.0: 14 destinations, 14 routes (14 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

192.168.0.80/30    *[Direct/0] 15:17:43
                    > via ge-0/0/7.321

[edit]
root@CE2-3-4# run show route hidden 192.168.0.80 extensive

CE2-3.inet.0: 14 destinations, 14 routes (7 active, 0 holddown, 7 hidden)
192.168.0.80/30 (1 entry, 0 announced)
         Direct
                Next hop type: Interface
                Address: 0x940d564
                Next-hop reference count: 2
                Next hop: via ge-0/0/7.321, selected
                State: <Secondary Hidden Int>
                Local AS: 64600
                Age: 8:13:08
                Validation State: unverified
                Task: IF
                AS path: 64600 I (Looped: 64600)
                Primary Routing Table CE2-4.inet.0

[edit]

    Anyone can shed some light on this ?

    thanks !!