On R4, go to OSPF router config and use summary-address. Like so:
router ospf summary-address 170.100.40.0 255.255.255.0 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66413&t=66391 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]