The distribute list configured under the RIPng process is
ipv6 router rip ripnamedistribute-list prefix-list listname out ethernet2!ipv6 prefix-list listname seq 5 deny 2001:DB8:0:A::/63 le 64ipv6 prefix-list listname seq 10 permit ::/0 le 128
6
EIGRP assigns a higher distance (170) to external routes than to internal routes (90). If any destination within the EIGRP domain is advertised into EIGRP from IS-IS, it will be ignored unless the internal route to the destination fails. Therefore, the EIGRP distances do not have to be manipulated. The distance statements under the IS-IS configurations of RTC and RTD follow:
RTC:
distance 115distance 170 192.168.10.254 0.0.0.0 1!access-list 1 permit any