Eric, You need to have a secondary address on routerA also to see the 1.1.2.1 network. >From the Cisco web page: Note If any router on a network segment uses a secondary address, all other routers on that same segment must also use a secondary address from the same network or subnet. http://www.cisco.com/univercd/cc/td/doc/product/software/ios112/112cg_cr/5cbook/5cip.htm#xtocid108363 Good Luck Debbie --- Eric ding wrote: > such as below: > routerA(fas0)--------(fas0)routerB > routerA# > interface fas0 > ip add 1.1.1.1 255.255.255.0 > router ei 1 > net 1.0.0.0 > no au > > routerB# > interface fas0 > ip add 1.1.1.2 255.255.255.0 > ip add 1.1.2.2 255.255.255.0 > router ei 1 > net 1.0.0.0 > no au > > > from the debug ip ei output ,i saw that routerB > advrtise the route 1.1.2.0 > 255.255.255.0 out fas 0, > but from the routerA,use sh ip ei to,i can't see > route to 1.1.2.0 from > routerA. > > > > both routers got ios 12.0,ip ei nei established. > thanks in advance! [EMAIL PROTECTED] __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=13747&t=13747 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]