From: Carnevale, Jason (jcarnevale@xxxxxxxxxxx)
Date: Fri Oct 05 2001 - 15:19:26 GMT-3
The problem is that isis has the same type mismatch problems as ospf. The
difference is that ospf has a command to manually set the network type, isis
does not. Since ATM is an NBMA network and one interface is point to point
and the others are main interfaces this is not going to work. The solution
is to create point-to-point tunnels between each router running isis.
-jason
-----Original Message-----
From: Brian Lodwick
To: ccielab@groupstudy.com
Sent: 10/5/2001 1:51 PM
Subject: IS-IS problems on an ATM multipoint config
I am getting frustrated with this IGP. I have decided to make up this
crazy
lab to key in on my difficult areas and one part of it is causing me
difficulties. It is a hub spoke topology with ATM PVC's running IS-IS
over
them. The routers are r7, r8, and r2. r8 is the hub and has a multipoint
sub-interface to the spokes r2, and r7. r2's ethernet 0/1/0
(172.16.20.0/24)is participating in IS-IS. What I end up getting is on
r8 I
receive the route for 172.16.20.1/24, but not on r7. When I debug isis
update-packets and isis spf-events on r7 I don't get anything at all, so
I
know it is not getting the update and rejecting it, it just isn't
receiving
it at all for some reason. Can anyone figure out what I am doing wrong?
I
have added the configs below for analysis.
Thanks in advance!
>>>Brian
Hub:
r8#sh run
Building configuration...
Current configuration : 1305 bytes
!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r8
!
logging rate-limit console 10 except errors
!
!
!
ip subnet-zero
!
!
no ip finger
no ip domain-lookup
!
no mgcp timer receive-rtcp
!
!
call rsvp-sync
!
!
!
!
!
!
!
!
interface ATM2/0
no ip address
no atm scrambling cell-payload
atm uni-version 3.1
no atm ilmi-keepalive
!
interface ATM2/0.1 multipoint
ip address 172.16.70.2 255.255.255.0
ip router isis
pvc 7/15
protocol ip 172.16.70.1 broadcast
protocol clns 49.0000.0007.0007.0007.00 broadcast
broadcast
encapsulation aal5snap
!
pvc 8/15
protocol ip 172.16.70.3 broadcast
protocol clns 49.0000.0002.0002.0002.00 broadcast
broadcast
encapsulation aal5snap
!
isis circuit-type level-2-only
isis priority 127 level-2
isis hello-multiplier 120
isis hello-interval 40
!
!
router isis
net 49.0000.0008.0008.0008.00
!
ip kerberos source-interface any
ip classless
no ip http server
!
!
!
!
!
!
!
!
!
!
snmp-server engineID local 80000009FF0000A100E4E5B4
snmp-server manager
!
dial-peer cor custom
!
!
!
!
alias exec ip sh ip route
alias exec int sh ip int brief
alias exec ipx sh ipx route
!
line con 0
transport input none
line aux 0
line vty 0 4
login
!
end
Spoke:
r7#sh run
Building configuration...
Current configuration : 2003 bytes
!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r7
!
logging rate-limit console 10 except errors
!
!
!
ip subnet-zero
!
!
no ip finger
no ip domain-lookup
!
no mgcp timer receive-rtcp
!
!
call rsvp-sync
!
!
!
!
!
!
!
controller T1 1/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
controller T1 1/1
!
!
interface ATM0/0
ip address 172.16.70.1 255.255.255.0
ip router isis
no atm scrambling cell-payload
no atm ilmi-keepalive
pvc 5/15
protocol ip 172.16.70.2 broadcast
protocol ip 172.16.70.3 broadcast
protocol clns 49.0000.0002.0002.0002.00 broadcast
protocol clns 49.0000.0008.0008.0008.00 broadcast
broadcast
encapsulation aal5snap
!
isis circuit-type level-2-only
isis priority 0 level-2
isis hello-multiplier 120
isis hello-interval 40
!
interface Serial1/0:0
no ip address
encapsulation frame-relay
frame-relay traffic-shaping
!
interface Serial1/0:0.1 point-to-point
ip address 172.16.30.1 255.255.255.0
ip ospf network point-to-multipoint
frame-relay interface-dlci 701
class vofr
vofr cisco
!
!
router ospf 100
log-adjacency-changes
network 172.16.30.1 0.0.0.0 area 0
!
router isis
net 49.0000.0007.0007.0007.00
!
ip kerberos source-interface any
ip classless
no ip http server
!
!
!
!
!
!
!
!
!
!
map-class frame-relay vofr
no frame-relay adaptive-shaping
frame-relay fair-queue
frame-relay voice bandwidth 32000
frame-relay fragment 80
!
snmp-server engineID local 80000009FF0000A1012D34BF
snmp-server manager
!
voice-port 3/0/0
!
voice-port 3/0/1
!
voice-port 3/1/0
!
voice-port 3/1/1
!
dial-peer cor custom
!
!
!
dial-peer voice 777 pots
destination-pattern 777
port 3/1/0
!
dial-peer voice 111 vofr
destination-pattern 111
session target Serial1/0:0 701
!
!
alias exec ip sh ip route
alias exec int sh ip int brief
alias exec ipx sh ipx route
!
line con 0
transport input none
line aux 0
line vty 0 4
login
!
end
Spoke:
r2#sh run
Building configuration...
Current configuration : 2663 bytes
!
version 12.2
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r2
!
logging rate-limit console 10 except errors
!
ip subnet-zero
no ip finger
no ip domain-lookup
!
ip cef
no ip dhcp-client network-discovery
frame-relay switching
call rsvp-sync
!
!
!
!
!
!
!
controller T1 0/0/0
framing esf
clock source internal
linecode b8zs
channel-group 0 timeslots 1-24 speed 56
!
controller T1 0/0/1
framing esf
linecode b8zs
!
controller T1 0/0/2
framing esf
linecode b8zs
!
controller T1 0/0/3
framing esf
linecode b8zs
!
!
interface Serial0/0/0:0
no ip address
encapsulation frame-relay
no ip route-cache distributed
frame-relay intf-type dce
frame-relay route 701 interface Serial3/1 107
!
interface Ethernet0/1/0
ip address 172.16.20.1 255.255.255.240
ip router isis
no ip route-cache distributed
no keepalive
isis circuit-type level-1
isis hello-multiplier 1000
isis hello-interval 300
!
interface Ethernet0/1/1
no ip address
no ip route-cache distributed
shutdown
!
interface Ethernet0/1/2
no ip address
no ip route-cache distributed
shutdown
!
interface Ethernet0/1/3
no ip address
no ip route-cache distributed
shutdown
!
interface ATM1/0
ip address 172.16.70.3 255.255.255.0
ip router isis
no atm ilmi-keepalive
pvc 6/15
protocol ip 172.16.70.1 broadcast
protocol ip 172.16.70.2 broadcast
protocol clns 49.0000.0007.0007.0007.00 broadcast
protocol clns 49.0000.0008.0008.0008.00 broadcast
broadcast
encapsulation aal5snap
!
isis circuit-type level-2-only
isis priority 0 level-2
isis hello-multiplier 120
isis hello-interval 40
!
interface ATM2/0
no ip address
shutdown
no atm ilmi-keepalive
!
interface Serial3/0
no ip address
shutdown
!
interface Serial3/1
no ip address
encapsulation frame-relay
frame-relay intf-type dce
frame-relay route 103 interface Serial3/2 301
frame-relay route 107 interface Serial0/0/0:0 701
!
interface Serial3/2
no ip address
encapsulation frame-relay
clockrate 2000000
frame-relay intf-type dce
frame-relay route 301 interface Serial3/1 103
!
interface Serial3/3
no ip address
shutdown
!
interface Serial3/4
no ip address
shutdown
!
interface Serial3/5
no ip address
shutdown
!
interface Serial3/6
no ip address
shutdown
!
interface Serial3/7
no ip address
shutdown
!
router isis
net 49.0000.0002.0002.0002.00
!
ip kerberos source-interface any
ip classless
no ip http server
!
!
!
alias exec ip sh ip route
alias exec ipx sh ipx route
alias exec int sh ip int brief
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end
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