From: Zhang Zhichao, Network Spec, SCS-Networks (zhichao@xxxxxxxxxxxxxxxxxxxxxx)
Date: Fri Oct 20 2000 - 06:56:32 GMT-3
Title: RE: redistribute question
1) when doing redistribution, the router will only redistribute those
'valid routes' in its routing table. in r2's routing table, it only
has 10.0.1.0 learned from rip, so it will only redistribut 10.0.1.0
from rip to ospf. it does not have 10.0.1.0 learned from ospf (IN ITS
ROUTING TABLE), so it wont do the reverse redistribution. (for
directly connected network, the rule is slightly different.)
2) ospf router will choose intra-area routes first, then inter-area.
external routes are less preferred, even if they have higher metric.
again, correct me if i am wrong
-----Original Message-----
From: zhangxianqi
To: ccielab@groupstudy.com
Sent: 20/10/2000 2:19 PM
Subject: redistribute question
hi all,
have a question,thanks
10.0.1.0/24--other router--r1------------r2-------20.0.1.0/24
rip rip rip and ospf
r2 have 10.0.1.0 route form rip,it metric is 5,if do mutual
redistribution on r2 and set the metric=1 to the route of 10.0.1.0,why
r2 can't advertise 10.0.1.0 to r1(I think r2 have a better metric than
learned from r1,so it should advertise the route to r1)?If it's
because
split horizen,please explain it,thanks
another question,thanks
if a router run ospf and redistribute connected subnet,why the other
ospf routers choose the internel route of interface over the external
from redistributed(them all have the adm distance of 110 and the
external route have cost 20,the internal route have cost 1100)?
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