From: Monchai.P@xxxxxxxxxxxxxxxxxx
Date: Thu Jan 18 2001 - 09:46:52 GMT-3
The BGP Internal AD is 200 but the OSPF AD is 110. These why put the ospf
route into routig table.
Monchai
-----ข้อความต้นฉบับ-----
จาก: Mark Beck [SMTP:mabeck@cisco.com]
ส่งเมื่อ: 18 มกราคม 2544 19:04
ถึง: Lykourgiotis Paraskevas; ccielab@groupstudy.com
เรื่อง: RE: Why BGP doesn't synchronize?
I have had problems with OSP and BGP in this manner, where RIP and
BGP work
fine. Aparently the IOS does some extra checks with OSPF like the
RID has to be
the same on the LSA and where we heard the update from.
Cheers,
Mark
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On
Behalf Of
> Lykourgiotis Paraskevas
> Sent: 10 January 2001 16:57
> To: ccielab@groupstudy.com
> Subject: Why BGP doesn't synchronize?
>
>
> Hi,
>
> I have configured BGP on a router, but I haven't turned off
synchronization.
> The problem is that BGP doesn't accept the received updates as
best routes,
> although the routes appear in the router's IGP routing table. Note
that if I
> turn off synchronisation, then no problem...
> Can anybody say why this happen?
> Following is some technical info:
>
> r1#sh ip route 11.0.0.0
> Routing entry for 11.0.0.0/24, 1 known subnets
> Redistributing via ospf 1
>
> O 11.1.1.0 [110/701] via 172.1.1.2, 00:07:01, Serial1/1
> r1#sh ip route
> r1#sh ip route 13.0.0.0
> Routing entry for 13.0.0.0/24, 1 known subnets
> Redistributing via ospf 1
>
> O 13.1.1.1 [110/2] via 172.1.17.1, 00:07:08, FastEthernet0/0
> r1#sh ip bg
> r1#sh ip bgp
> BGP table version is 5, local router ID is 10.1.2.1
> Status codes: s suppressed, d damped, h history, * valid, > best,
i -
> internal
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> * i11.1.1.0/24 10.1.1.1 0 100 0 i
> * i13.1.1.0/24 10.1.3.1 0 100 0 i
> r1#
>
> router ospf 1
> router-id 10.1.2.1
> network 10.1.2.1 0.0.0.0 area 0
> network 172.1.1.1 0.0.0.0 area 1
> network 172.1.17.10 0.0.0.0 area 0
> !
> router bgp 1
> neighbor 10.1.1.1 remote-as 1
> neighbor 10.1.1.1 update-source Loopback0
> neighbor 10.1.3.1 remote-as 1
> neighbor 10.1.3.1 update-source Loopback0
> neighbor 10.1.3.1 route-reflector-client
> !
> ip classless
>
> TIA
> Paraskevas
>
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