From: kasturi cisco (kasturi_cisco@hotmail.com)
Date: Fri Oct 03 2003 - 11:59:56 GMT-3
Brian,
Just a quick question. Is this the expected behaviour between any 2
routing protcols when connected interfaces are involved OR is it only
between some of them.
Thanks for your answers.
Good Luck,
Kasturi.
>From: "Brian Dennis" >Reply-To: "Brian Dennis" >To: "'Troy'" , >Subject:
RE: Redist. Eigrp into OSPF with route map blocking connected interface
>Date: Thu, 2 Oct 2003 20:44:15 -0700 > >This is normal behavior. Think
of it like this: When you redistribute >EIGRP into OSPF you are also
redistributing the connected interfaces >that are being advertised via
EIGRP. > >interface Loopback0 > ip address 172.16.103.1 255.255.255.255
>! >interface FastEthernet0/1 > ip address 172.16.35.3 255.255.255.0 >!
>router eigrp 100 > network 172.16.35.0 0.0.0.255 >! >router ospf 1 >
redistribute connected subnets route-map DEFAULT <-- > redistribute eigrp
100 subnets tag 100 > network 172.16.123.0 0.0.0.255 area 0 >! >route-map
DEFAULT permit 10 > match interface FastEthernet0/1 > >Of course this
"redistribute connected subnets route-map DEFAULT" does >not show up in
the configuration. The way you can tell it is there is >because once you
actually add the "redistribute connected" command under >"router ospf"
you lose this "default" redistribution of the connected >EIGRP
interfaces. > >When you configure redistribution for the loopback 0
interface you will >overwrite the "default" redistribution command that
redistributed the >interface that were being advertised via EIGRP. >
>interface Loopback0 > ip address 172.16.103.1 255.255.255.255 >!
>interface FastEthernet0/1 > ip address 172.16.35.3 255.255.255.0 >!
>router eigrp 100 > network 172.16.35.0 0.0.0.255 >! >router ospf 1 >
redistribute connected subnets route-map LOOPBACK0 > redistribute eigrp
100 subnets tag 100 > network 172.16.123.0 0.0.0.255 area 0 >! >route-map
LOOPBACK0 permit 10 > match interface Loopback0 > >So the solution is to
add the interface advertised via EIGRP to the same >route-map that is
allowing the loopback interface: > >interface Loopback0 > ip address
172.16.103.1 255.255.255.255 >! >interface FastEthernet0/1 > ip address
172.16.35.3 255.255.255.0 >! >router eigrp 100 > network 172.16.35.0
0.0.0.255 >! >router ospf 1 > redistribute connected subnets route-map
LOOPBACK0 > redistribute eigrp 100 subnets tag 100 > network 172.16.123.0
0.0.0.255 area 0 >! >route-map LOOPBACK0 permit 10 > match interface
Loopback0 > match interface FastEthernet0/1 <--- Needed > >Brian Dennis,
CCIE #2210 (R&S/ISP-Dial/Security) >bdennis@internetworkexpert.com >Toll
Free: 877-224-8987 >Direct: 775-745-6404 (Outside the US and Canada)
>Internetwork Expert, Inc. >http://www.InternetworkExpert.com > >
>-----Original Message----- >From: nobody@groupstudy.com
[mailto:nobody@groupstudy.com] On Behalf Of >Troy >Sent: Thursday,
October 02, 2003 8:22 PM >To: ccielab@groupstudy.com >Subject: Redist.
Eigrp into OSPF with route map blocking connected >interface > >I am
confused as to why a route map designed to block all connected
>interfaces except the lo 0 >would prevent a network specified under the
EIGRP process from being >redistributed into OSPF >I am missing something
fundamental. I would think that since fa 0/1 it >is a part of the EIGRP
>process then it would be redistributed into OSPF even though a route map
>may block the connected >interface. Is this incorrect? > >This config
works: >interface Loopback0 > ip address 172.16.103.1 255.255.255.255
>interface FastEthernet0/1 > ip address 172.16.35.3 255.255.255.0 >
duplex auto > speed auto >router eigrp 100 > network 172.16.35.0
0.0.0.255 > no auto-summary >! >router ospf 1 > log-adjacency-changes >
redistribute eigrp 100 subnets tag 100 > network 172.16.123.0 0.0.0.255
area 0 > > Type-5 AS External Link States >Link ID ADV Router Age Seq#
Checksum Tag >172.16.20.0 172.16.102.1 1455 0x80000010 0x007AA9 120
>172.16.35.0 172.16.103.1 20 0x80000001 0x0082B4 100 >172.16.105.0
172.16.103.1 1617 0x80000001 0x0080EF 100 >172.16.120.0 172.16.102.1 1456
0x80000010 0x002A95 120 >The 172.16.35.0 is redistributed correctly >
>However why is the same network blocked with this config? > >this config
fails to redistribute lo 0: >interface Loopback0 > ip address
172.16.103.1 255.255.255.255 > >interface FastEthernet0/1 > ip address
172.16.35.3 255.255.255.0 > duplex auto > speed auto >router eigrp 100 >
network 172.16.35.0 0.0.0.255 > no auto-summary >! >router ospf 1 >
log-adjacency-changes > redistribute connected subnets route-map
advertiselo0 > redistribute eigrp 100 subnets tag 100 > network
172.16.123.0 0.0.0.255 area 0 >! >access-list 1 permit 172.16.103.1
>route-map advertiselo0 permit 10 > match ip address 1 > > Type-5 AS
External Link States >Link ID ADV Router Age Seq# Checksum Tag
>172.16.20.0 172.16.102.1 1670 0x80000010 0x007AA9 120 >172.16.103.1
172.16.103.1 33 0x80000001 0x007ADB 0 >172.16.105.0 172.16.103.1 1832
0x80000001 0x0080EF 100 >172.16.120.0 172.16.102.1 1671 0x80000010
0x002A95 120 > > >--------------------------------- >Do you Yahoo!? >The
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