From: navaid@rogers.com
Date: Fri Sep 12 2003 - 14:47:18 GMT-3
Since layer-2 multicast addresses are drived from group ip address and there is an overlap of layer-2 addresses that can create problem with routing protcol that use multicast. We have to be careful in choosing group address.
Navaid.
>
> From: "Paul Chen" <cpjchen@starhub.net.sg>
> Date: 2003/09/12 Fri PM 01:00:00 EDT
> To: <navaid@rogers.com>, <ccielab@groupstudy.com>
> Subject: RE: Multicast- OSPF neighbor in Init state
>
> Yes, I have a igmp join-group on R5 ethernet interface but I am not sure if
> this poses a problem ?
>
> I can ping the ospf multicast addresses. The multicast addresses did not
> include 224.0.0.5 and 224.0.0.6, so I am puzzled.
>
> Paul
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> navaid@rogers.com
> Sent: Friday, September 12, 2003 7:35 PM
> To: Paul Chen; ccielab@groupstudy.com
> Subject: Re: Multicast- OSPF neighbor in Init state
>
> do you have any ip igmp join-group statement on any router. If yes then
> remove it. I am wondering if there is an ip multicast group address
> conflict.
>
> Navaid
> >
> > From: "Paul Chen" <cpjchen@starhub.net.sg>
> > Date: 2003/09/11 Thu PM 11:59:14 EDT
> > To: <ccielab@groupstudy.com>
> > Subject: Multicast- OSPF neighbor in Init state
> >
> > Hi Everyone,
> >
> >
> >
> > I am having this problem of establishing OSPF adj. between R2 and R5 over
> a
> > FR Cloud. The 2 neighbors are always stuck in a INIT state.
> >
> >
> >
> > This started when I configured multicast - ip pim sparse-dense-mode - on
> > the multipoint serial interfaces.
> >
> >
> >
> > If I remove the 'ip pim sparse-dense-mode' the neighbors will revert back
> to
> > a FULL state.
> >
> >
> >
> > I tried using 'ip pim nbma-mode' to no avail. Anyway the IOS complains
> the
> > nbma-mode is not recommended for sparse-dense-mode.
> >
> >
> >
> >
> >
> > Any help appreciated.
> >
> >
> >
> >
> >
> > Thanks,
> >
> > Paul
> >
> >
> >
> >
> >
> >
> >
> >
> ----------------------------------------------------------------------------
> > ------- R2
> >
> ----------------------------------------------------------------------------
> > ---
> >
> >
> >
> > interface Loopback0
> >
> > ip address 136.10.2.2 255.255.255.0
> >
> > ip pim sparse-dense-mode
> >
> > !
> >
> >
> >
> > interface Serial1/0.1 point-to-point
> >
> > ip address 136.10.24.2 255.255.255.248
> >
> > ip router isis
> >
> > isis password cisco
> >
> > frame-relay interface-dlci 104
> >
> > !
> >
> > interface Serial1/0.2 multipoint
> >
> > ip address 136.10.100.2 255.255.255.224
> >
> > ip pim sparse-dense-mode
> >
> > ip ospf message-digest-key 5 md5 ipexpert5
> >
> > ip ospf message-digest-key 6 md5 ipexpert6
> >
> > ip ospf network point-to-multipoint non-broadcast
> >
> > frame-relay map ip 136.10.100.5 105 broadcast
> >
> > frame-relay map ip 136.10.100.6 106 broadcast
> >
> > no frame-relay inverse-arp
> >
> >
> >
> >
> >
> > router ospf 1
> >
> > router-id 136.10.2.2
> >
> > log-adjacency-changes
> >
> > area 0 authentication message-digest
> >
> > redistribute isis level-2 metric 44 subnets tag 444
> >
> > redistribute rip metric 22 subnets tag 222
> >
> > network 136.10.2.2 0.0.0.0 area 0
> >
> > network 136.10.25.0 0.0.0.3 area 0
> >
> > network 136.10.100.0 0.0.0.31 area 0
> >
> > neighbor 136.10.100.5 cost 56
> >
> > neighbor 136.10.100.6 cost 56
> >
> > !
> >
> > router isis
> >
> > net 49.0024.2222.2222.2222.00
> >
> > is-type level-2-only
> >
> > metric-style wide
> >
> > summary-address 100.10.0.0 255.255.0.0 level-1-2
> >
> > redistribute ospf 1 route-map ospf2isis
> >
> > redistribute rip metric 2
> >
> > !
> >
> > router rip
> >
> > version 2
> >
> > timers basic 30 180 0 180
> >
> > redistribute isis level-2 metric 2
> >
> > redistribute ospf 1 metric 8 route-map ospf2rip
> >
> > passive-interface BRI0/0
> >
> > network 136.10.0.0
> >
> >
> >
> >
> >
> >
> >
> > ip pim send-rp-announce Loopback0 scope 16 group-list 22
> >
> > !
> >
> > !
> >
> > access-list 22 permit 230.10.10.1
> >
> > access-list 22 permit 230.11.11.1
> >
> > access-list 22 permit 230.12.12.1
> >
> > access-list 22 permit 230.13.13.1
> >
> > access-list 22 permit 230.14.14.1
> >
> >
> >
> >
> >
> >
> >
> >
> ---------------------------------------------------------------------------
> > R5
> >
> ----------------------------------------------------------------------------
> > -----------
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > interface Loopback0
> >
> > ip address 136.10.5.5 255.255.255.0
> >
> > ip pim sparse-dense-mode
> >
> > ip ospf network point-to-point
> >
> >
> >
> >
> >
> > interface Ethernet0
> >
> > ip address 136.10.56.5 255.255.255.240
> >
> > ip pim sparse-dense-mode
> >
> > ip ospf dead-interval 15
> >
> > ip ospf priority 255
> >
> > ip ospf mtu-ignore
> >
> > ip igmp join-group 230.11.11.1
> >
> > ip igmp join-group 230.12.12.1
> >
> > ip igmp join-group 231.12.12.1
> >
> >
> >
> >
> >
> > interface Serial0
> >
> > ip address 136.10.100.5 255.255.255.224
> >
> > ip pim sparse-dense-mode
> >
> > encapsulation frame-relay
> >
> > ip ospf message-digest-key 5 md5 ipexpert5
> >
> > ip ospf network point-to-multipoint non-broadcast
> >
> > frame-relay map ip 136.10.100.2 501 broadcast
> >
> > frame-relay map ip 136.10.100.6 501 broadcast
> >
> > frame-relay interface-dlci 501
> >
> > class rtp
> >
> > no frame-relay inverse-arp
> >
> > frame-relay lmi-type ansi
> >
> >
> >
> >
> >
> >
> >
> > router ospf 1
> >
> > router-id 136.10.5.5
> >
> > log-adjacency-changes
> >
> > area 0 authentication message-digest
> >
> > network 136.10.5.5 0.0.0.0 area 0
> >
> > network 136.10.25.0 0.0.0.3 area 0
> >
> > network 136.10.56.0 0.0.0.15 area 3
> >
> > network 136.10.100.0 0.0.0.31 area 0
> >
> > neighbor 136.10.100.2
> >
> >
> >
> >
> >
> > ip pim rp-announce-filter rp-list 2
> >
> > ip pim send-rp-discovery Serial0 scope 16
> >
> >
> >
> > access-list 2 permit 136.10.2.2
> >
> >
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