From: Wang Dehong-DWANG1 (Dehong.Wang@motorola.com)
Date: Sun Nov 13 2005 - 18:45:29 GMT-3
Ignore my previous post..As Chris said, I was able to ping the
multicast-group even without multicast-routing on both routers and this
even has nothing to with multicast. Packets are sent out all the
interfaces and R3 replied.
Rack1R2#ping 225.25.25.25
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 225.25.25.25, timeout is 2 seconds:
*Apr 12 17:57:14.218: IP: s=162.1.38.2 (local), d=225.25.25.25
(FastEthernet0/0), len 100, sending broad/multicast
*Apr 12 17:57:14.218: IP: s=141.141.123.2 (local), d=225.25.25.25
(Serial0/0), len 100, sending broad/multicast
*Apr 12 17:57:14.218: IP: s=162.1.0.2 (local), d=225.25.25.25
(Serial0/0.1), len 100, sending broad/multicast
*Apr 12 17:57:14.222: IP: s=150.1.2.2 (local), d=225.25.25.25
(Loopback0), len 100, sending broad/multicast
*Apr 12 17:57:14.222: IP: tableid=0, s=162.1.38.3 (FastEthernet0/0),
d=162.1.38.2 (FastEthernet0/0), routed via RIB
*Apr 12 17:57:14.222: IP: s=162.1.38.3 (FastEthernet0/0), d=162.1.38.2
(FastEthernet0/0), len 100, rcvd 3
Reply to request 0 from 162.1.38.3, 4 ms
Rack1R2#
-----Original Message-----
From: Wang Dehong-DWANG1
Sent: Sunday, November 13, 2005 3:03 PM
To: 'Loi, Choon Ho'; Chris Lewis; ccielab@groupstudy.com
Subject: RE: Router as Multicast Host
I think that you have to enable pim on the fa0/1 on R1.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Loi, Choon Ho
Sent: Sunday, November 13, 2005 11:07 AM
To: Chris Lewis; ccielab@groupstudy.com
Subject: RE: Router as Multicast Host
i apply your configuration to another router with 12.2T IOS but, still
no luck.
seems like the router could not get the OIL set to the desired
interface.
maybe multicast just hate me.
r1#ping 229.10.10.10
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 229.10.10.10, timeout is 2 seconds:
Reply to request 0 from 11.11.11.1, 1 ms r1# r1#ping 11.11.11.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 11.11.11.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
r1#sh run int f0/1 Building configuration...
Current configuration : 128 bytes
!
interface FastEthernet0/1
ip address 11.11.11.1 255.255.255.0
ip igmp join-group 229.10.10.10
duplex auto
speed auto
end
r1#sr | i multicast-routing
r1#
r2#ping 229.10.10.10
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 229.10.10.10, timeout is 2 seconds:
*Nov 13 16:44:23.541: IP(0): MAC sa=0003.3295.6c39 (FastEthernet2/1), IP
last-hop=11.11.11.2
*Nov 13 16:44:23.541: IP(0): IP tos=0x0, len=100, id=297, ttl=254,
prot=1
*Nov 13 16:44:23.541: IP(0): s=11.11.11.2 (FastEthernet2/1)
d=229.10.10.10 id=297, prot=1, len=114(100), mroute olist null.
r2#undebug all
All possible debugging has been turned off r2#ping 229.10.10.10
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 229.10.10.10, timeout is 2 seconds:
.
r2#sr int f2/1
Building configuration...
Current configuration : 121 bytes
!
interface FastEthernet2/1
ip address 11.11.11.2 255.255.255.0
ip pim dense-mode
duplex auto
speed auto
end
r2#sr | i ip multicast
ip multicast-routing
________________________________
From: Chris Lewis [mailto:chrlewiscsco@yahoo.com]
Sent: Sunday, November 13, 2005 11:18 PM
To: Loi, Choon Ho; ccielab@groupstudy.com
Subject: RE: Router as Multicast Host
Choon,
Either you have an IOS bug or there is something strange in the setup
you have, as this is not expected behavior. I would suggest running
debug ip packet and debug ip mpacket, both in detail mode on R2 to see
why it does not reply.
R2 does not need multicast routing enabled, as it is replying to a
unicast source address.
I have exactly the same setup (full configs at end, note the only change
to adding the ip pim dense mode on R1 ethernet interface is to add
entries to the mroute table, it does not affect the ability to ping in
this case, as multicast pings sends packets out all interfaces by
default) and get the following results
R1(config-if)#do ping 10.1.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R1(config-if)#do ping 229.10.10.10 Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 229.10.10.10, timeout is 2 seconds:
Reply to request 0 from 10.1.1.2, 1 ms
R1
Building configuration...
Current configuration : 1280 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
logging queue-limit 100
!
memory-size iomem 15
ip subnet-zero
!
no ip domain lookup
!
ip multicast-routing
ip audit notify log
ip audit po max-events 100
mpls ldp logging neighbor-changes
!
no voice hpi capture buffer
no voice hpi capture destination
!
mta receive maximum-recipients 0
!
interface FastEthernet0/0
ip address 10.1.1.1 255.255.255.0
duplex auto
speed auto
!
no ip http server
no ip http secure-server
ip classless
!
call rsvp-sync
!
mgcp profile default
!
dial-peer cor custom
!
line con 0
privilege level 15
line aux 0
line vty 0 4
!
end
R2
Building configuration...
Current configuration : 939 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
logging queue-limit 100
!
memory-size iomem 15
ip subnet-zero
!
no ip domain lookup
!
ip audit notify log
ip audit po max-events 100
mpls ldp logging neighbor-changes
!
no voice hpi capture buffer
no voice hpi capture destination
!
mta receive maximum-recipients 0
!
interface FastEthernet0/0
ip address 10.1.1.2 255.255.255.0
ip igmp join-group 229.10.10.10
duplex auto
speed auto
!
interface Serial0/0
no ip address
shutdown
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
!
no ip http server
no ip http secure-server
ip classless
With this setup the show ip mroute will be empty, if I add ip pim dense
to F0/0 of R1 I get the following on R1
Interface state: Interface, Next-Hop or VCD, State/Mode (*,
229.10.10.10), 00:00:03/00:02:56, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
FastEthernet0/0, Forward/Dense, 00:00:03/00:00:00 (*, 224.0.1.40),
00:00:05/00:02:56, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
FastEthernet0/0, Forward/Dense, 00:00:05/00:00:00 R1(config-if)#
There is now an OIL entry for the 229.10.10.10 group and the 224.0.1.40
group is added as enabling dense mode also enables IGMP, and all IGMP
hosts by default will send a report for that group (no sparse mode
needed to get that to happen)
Chris
"Loi, Choon Ho" <ChoonHo.Loi@getronics.com> wrote:
here's the config:
R1:
interface FastEthernet0/0
ip address 172.16.80.1 255.255.255.0
ip igmp join-group 229.10.10.10
duplex auto
speed auto
R2:
ip multicast-routing
interface FastEthernet0/0
ip address 172.16.80.2 255.255.255.0
ip pim dense-mode
duplex auto
speed auto
here's the ping:
R2#ping 229.10.10.10 rep 10
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 229.10.10.10, timeout is 2
seconds:
..........
R2#ping 229.10.10.10 so f0/0 rep 10
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 229.10.10.10, timeout is 2
seconds:
Packet sent with a source address of 172.16.80.2
..........
R2#ping 172.16.80.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.80.1, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max =
1/2/4 ms
________________________________
From: Chris Lewis [mailto:chrlewiscsco@yahoo.com]
Sent: Saturday, November 12, 2005 11:00 PM
To: Loi, Choon Ho; ccielab@groupstudy.com
Subject: Re: Router as Multicast Host
I tihnk you'll have to post your configs. ip mulicast routing is
not required for R1 to respond to pings to 229.10.10.10 from R2, in my
setup I can enable just a join on the interface on R1 facing R2, then R2
is able to ping 229.10.10.10, the only config on R2 is to enable
multicast routing and put pim dende on the interface going towards R1
Chris
"Loi, Choon Ho" <ChoonHo.Loi@getronics.com> wrote:
For this scenario:
R1(join 229.10.10.10)-----------(pim dense)R2(pim
dense)----------------(pim dense)R3
With the setup, R2 can't ping 229.10.10.10
What is the possible solution for this, if R1 can not
enable ip
multicast-routing.
Following is the debug from R2:
Nov 12 05:01:24.330: IGMP(0): Received v2 Report on
FastEthernet0/0 from
172.16.80.1 for 229.10.10.10
*Nov 12 05:01:24.330: IGMP(0): Received Group record for
group
229.10.10.10, mode 2 from 172.16.80.1 for 0 sources
*Nov 12 05:01:24.330: IGMP(0): Updating EXCLUDE group
timer for
229.10.10.10
*Nov 12 05:01:24.330: IGMP(0): MRT Add/Update
FastEthernet0/0 for
(*,229.10.10.10) by 0
Sh ip mroute from R2:
(*, 229.10.10.10), 00:05:37/stopped, RP 0.0.0.0, flags:
DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
FastEthernet0/0, Forward/Dense, 00:05:37/00:00:00
(172.16.80.2, 229.10.10.10), 00:04:58/00:01:03, flags:
PT
Incoming interface: FastEthernet0/0, RPF nbr 0.0.0.0
Outgoing interface list: Null
(*, 224.0.1.40), 00:06:32/00:02:21, RP 0.0.0.0, flags:
DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
FastEthernet0/0, Forward/Dense, 00:06:32/00:00:00
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