From: Brian Lodwick (xpranax@xxxxxxxxxxx)
Date: Fri Oct 05 2001 - 15:40:07 GMT-3
None of these interfaces are configured with point-to-point sub-interfaces.
There is only one multipoint sub-interface and the others are physical
interfaces. I know there is an issue with using point-to-point
sub-interfaces with either physical or multipoint sub-interfaces, but I
believe physical and multipoint sub-interfaces are compatible. Also if this
was the issue it would be an adjacency issue, and all adjacencies are full.
Also if you notice I have manually configured the Hello/Dead intervals and
priorities to assure the Hub is elected the DR.
r8#sh clns is-neighbors
System Id Interface State Type Priority Circuit Id Format
r2 AT2/0.1 Up L2 0 r8.01 Phase V
r7 AT2/0.1 Up L2 0 r8.01 Phase V
r2#sh clns is-neighbors
System Id Interface State Type Priority Circuit Id Format
r8 AT1/0 Up L2 127 r8.01 Phase V
r7#sh clns is-neighbors
System Id Interface State Type Priority Circuit Id Format
r8 AT0/0 Up L2 127 r8.01 Phase V
>From: "Carnevale, Jason" <jcarnevale@gnilink.net>
>Reply-To: "Carnevale, Jason" <jcarnevale@gnilink.net>
>To: "'Brian Lodwick '" <xpranax@hotmail.com>
>CC: "'ccielab@groupstudy.com'" <ccielab@groupstudy.com>
>Subject: RE: IS-IS problems on an ATM multipoint config
>Date: Fri, 5 Oct 2001 14:19:26 -0400
>
>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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