Re: Isis and ATM

From: Stefan Grey (examplebrain@hotmail.com)
Date: Sun Aug 07 2005 - 03:19:28 GMT-3


I also thought that maybe BB1 router is filtering this isis level1 default
route. But look at the configuration below. I have no idia what in the
configuration could filter this default route to r2. Maybe you could tell
me. Thanks (I mentioned this problem when doing IEWBv2 lab2)

hostname BB1
!
logging queue-limit 100
!
memory-size iomem 10
ip subnet-zero
!
!
no ip domain lookup
!
!
!
key chain EIGRP
key 1
  key-string CISCO
!
!
!
!
!
!
!
!
no voice hpi capture buffer
no voice hpi capture destination
!
!
mta receive maximum-recipients 0
!
!
!
!
interface Loopback112
ip address 112.0.0.1 255.0.0.0
!
interface Loopback113
ip address 113.0.0.1 255.0.0.0
!
interface Loopback114
ip address 114.0.0.1 255.0.0.0
!
interface Loopback115
ip address 115.0.0.1 255.0.0.0
!
interface Loopback116
ip address 116.0.0.1 255.0.0.0
!
interface Loopback117
ip address 117.0.0.1 255.0.0.0
!
interface Loopback118
ip address 118.0.0.1 255.0.0.0
!
interface Loopback119
ip address 119.0.0.1 255.0.0.0
!
interface Loopback51001
ip address 51.0.0.1 255.255.0.0
!
interface Loopback51101
ip address 51.1.0.1 255.255.0.0
!
interface Loopback51201
ip address 51.2.0.1 255.255.0.0
!
interface Loopback51301
ip address 51.3.0.1 255.255.0.0
!
interface Loopback51401
ip address 51.4.0.1 255.255.0.0
!
interface Loopback51501
ip address 51.5.0.1 255.255.0.0
!
interface Loopback51601
ip address 51.6.0.1 255.255.0.0
!
interface Loopback51701
ip address 51.7.0.1 255.255.0.0
!
interface Loopback200000
ip address 200.0.0.1 255.255.255.0
!
interface Loopback200010
ip address 200.0.1.1 255.255.255.0
!
interface Loopback200020
ip address 200.0.2.1 255.255.255.0
!
interface Loopback200030
ip address 200.0.3.1 255.255.255.0
!
interface Loopback2121801
ip address 212.18.0.1 255.255.255.0
!
interface Loopback2121811
ip address 212.18.1.1 255.255.255.0
!
interface Loopback2121821
ip address 212.18.2.1 255.255.255.0
!
interface Loopback2121831
ip address 212.18.3.1 255.255.255.0
!
interface Loopback12109150
ip address 12.109.15.0 255.255.255.255
!
interface Loopback12109151
ip address 12.109.15.1 255.255.255.255
!
interface Loopback12109152
ip address 12.109.15.2 255.255.255.255
!
interface Loopback12109153
ip address 12.109.15.3 255.255.255.255
!
interface Loopback12109154
ip address 12.109.15.4 255.255.255.255
!
interface Loopback12109155
ip address 12.109.15.5 255.255.255.255
!
interface Loopback12109156
ip address 12.109.15.6 255.255.255.255
!
interface Loopback12109157
ip address 12.109.15.7 255.255.255.255
!
interface Ethernet0/0
description HDLC link to BB3 for BGP Peering
ip address 172.16.4.1 255.255.255.0
half-duplex
!
interface Serial0/0
no ip address
shutdown
no fair-queue
!
interface Ethernet0/1
no ip address
shutdown
half-duplex
!
interface Serial0/1
no ip address
shutdown
!
interface ATM1/0
no ip address
no atm ilmi-keepalive
pvc 0/5 qsaal
!
pvc 0/16 ilmi
!
!
interface ATM1/0.1100 point-to-point
description PVC 1/100 to Rack1R6 for PVC Discovery
ip address 54.1.2.254 255.255.255.0
ip router isis 1
pvc 1/100
!
!
!
router eigrp 10
network 54.0.0.0
network 200.0.0.0 0.0.3.255
distribute-list EIGRP out
no auto-summary
!
router isis 1
net 49.0001.00e0.1e57.e592.00
is-type level-1
set-overload-bit
passive-interface Loopback51001
passive-interface Loopback51101
passive-interface Loopback51201
passive-interface Loopback51301
passive-interface Loopback51401
passive-interface Loopback51501
passive-interface Loopback51601
passive-interface Loopback51701
!
ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 Null0
ip route 204.12.1.0 255.255.255.0 172.16.4.3

>From: Zouta oxpf <zouta.oxpf@gmail.com>
>Reply-To: Zouta oxpf <zouta.oxpf@gmail.com>
>To: Stefan Grey <examplebrain@hotmail.com>
>CC: Groupstudy <ccielab@groupstudy.com>
>Subject: Re: Isis and ATM
>Date: Sat, 6 Aug 2005 22:35:50 -0400
>
>I overlooked that. Maybe the default route is being deliberately
>filtered at the backbone, you know you really do not have that much
>control over the backbone. You might have to employ some other means
>to have full reachability to those BB routes. If you have access to
>the backbone check to make sure that ISIS default is not being
>filtered.
>
>Another area to explore is isis metric style, check isis issues with
>metric styles, wide, narrow and transition.
>
>ZO.
>
>On 8/6/05, Stefan Grey <examplebrain@hotmail.com> wrote:
> >
> > Yes I already mentioned this, they are in the same area.
> >
> > Router R1 is in Area 49.1.....
> > Router r2,r3,bb1 are in the same area 49.2.... but in different one from
> > router R1.
> >
> >
> > >From: Zouta oxpf <zouta.oxpf@gmail.com>
> > >Reply-To: Zouta oxpf <zouta.oxpf@gmail.com>
> > >To: Stefan Grey <examplebrain@hotmail.com>
> > >CC: ccielab@groupstudy.com
> > >Subject: Re: Isis and ATM
> > >Date: Sat, 6 Aug 2005 15:09:24 -0400
> > >
> > >Hi Stefan,
> > >
> > >Is BB1 and R3 in the same ISIS area?
> > >
> > >ZO
> > >
> > >On 8/6/05, Stefan Grey <examplebrain@hotmail.com> wrote:
> > > > Please could you explain me the following:
> > > >
> > > > we have such topology
> > > >
> > > > R1 - R2 -R3 -BB1
> > > >
> > > > R1-R2-R3 is connected with ethernet
> > > > R3-BB1 is connected with ATM
> > > >
> > > > R1 - int area 1
> > > >
> > > > r2,r3,BB1 in isis area 2
> > > >
> > > > R1 - R2 - level-2 only connection
> > > >
> > > > R2-R3 level 1 conn
> > > > R3-BB1 level 1 connection
> > > >
> > > > 1.R3 see the default isis connection to R2. So it can access all
> > >external
> > > > routers in outside router R1. (As normally in the stub network).
> > > >
> > > > BB1 doesn't have this default route. Why?? It have only L1 routes in
> > >it's
> > > > area and nothing about how to reach the outside routers. I thought
>that
> > >L1
> > > > routers should pass the information between each other.
> > > >
> > > > Any idia??
> > > >
> > > > When redistributin for example Ospf into isis level1 on R2 router I
>also
> > >had
> > > > the problem that R3 gets some routes which BB1 doesn't.
> > > >
> > > > I totally don't understand why.
> > > >
> > > > Please help....
> > > >
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