Router A and B are running 12.3(22). I configured a EIGRP summary route on router A interface toward B with various administrative distance values. But in router B routing table, the summary route is alway EIGRP route with distance 90.
interface Ethernet 0/0
ip summary-address eigrp 1 192.168.0.0 255.255.0.0
Router B routing table:
D 192.168.0.0/16 [90/2684416] via 172.20.1.1, 00:00:30, Ethernet0/0
Isn't the summary router default to administrative distance of 5?
When you configured summary address in router A, the admin distance of the summary route is 5. When router A send the route to router B, router B will see it as a native EIGRP route and assign it with a admin distance value of 90.
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