I have a scenario in which the redistribution from level-2 into level-1 is working fine, however, from my L1-L2 router, I have 2 L2 neighbors and I want to filter out one of these L2 neighbor’s routes from being redistributed into level-1.

Setup is.

R1 – - – (L2) – - (L1) R3 ————————-R4 – - – (L2) – - R2

On R3, I have this configuration but R4 still receives all routes.

R3#sh run Building configuration…

Current configuration : 1305 bytes ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R3 ! boot-start-marker boot-end-marker ! ! no aaa new-model ! resource policy ! memory-size iomem 5 ip subnet-zero ! ! ip cef no ip dhcp use vrf connected ! ! no ip ips deny-action ips-interface ! clns filter-set CLNS deny 49.0001.0000.0000.0001.00 no ftp-server write-enable ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! no crypto isakmp ccm ! ! ! ! interface Loopback0 ip address 3.3.3.3 255.255.255.0 ! interface FastEthernet0/0 ip address 150.1.13.3 255.255.255.0 ip router isis duplex auto speed auto clns enable isis circuit-type level-2-only ! interface FastEthernet1/0 ip address 150.1.23.3 255.255.255.0 ip router isis duplex auto speed auto isis circuit-type level-2-only ! interface FastEthernet2/0 ip address 150.1.34.3 255.255.255.0 ip router isis duplex auto speed auto isis circuit-type level-1 ! router isis net 49.0034.0000.0000.0003.00 redistribute isis ip level-2 into level-1 route-map CLNS passive-interface Loopback0 ! ip http server no ip http secure-server ip classless ! ! ! ! route-map CLNS permit 10 match clns address CLNS ! ! ! control-plane ! ! ! ! ! ! ! ! ! ! line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 login ! ! end

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