From: Michelle T (mtruman@xxxxxxxxxxxxxxx)
Date: Wed Jan 10 2001 - 15:47:15 GMT-3
I thought you had synch turned on? And I understood you to say you did have
IGP routes for these routes and were seeing them via sh ip bgp but not in
the routing table. Perhaps I misunderstood?
Synch=on You must have an IGP route to match bgp route
Synch=off No corresponding route necessary
However, admin distance between BGP, be it i or e, still applies, so if it
is an eBGP route, it will pop into the table. If it is iBGP, it should not
if there is a more "believe-able" route via a protocol with a lower admin.
distance.
Michelle
----- Original Message -----
From: "Lykourgiotis Paraskevas" <ParaskevasL@pcsystems.gr>
To: <ccielab@groupstudy.com>
Sent: Wednesday, January 10, 2001 12:07 PM
Subject: RE: Why BGP doesn't synchronize?
> Yes but they have to be synchronised regardless of getting into the
routing
> table.
>
> -----Original Message-----
> From: Michelle T [mailto:mtruman@mn.mediaone.net]
> Sent: Wednesday, January 10, 2001 8:02 PM
> To: Lykourgiotis Paraskevas; ccielab@groupstudy.com
> Subject: Re: Why BGP doesn't synchronize?
>
>
> They are iBGP routes which have an admin. distance of 200, which will
never
> beat OSPF at 110.
>
> Michelle
> ----- Original Message -----
> From: "Lykourgiotis Paraskevas" <ParaskevasL@pcsystems.gr>
> To: <ccielab@groupstudy.com>
> Sent: Wednesday, January 10, 2001 10:57 AM
> 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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