From: Maxim Kurushkin (m.kurushkin@orange-ftgroup.ru)
Date: Sun Jan 28 2007 - 10:17:05 ART
Hrrrrrr....
I dont need multicast routing!!! Sorry, but read my original
question...I'll write it again...
I want to use Switch as multicast receiver host only!
And it works with Router. ( Router <-> Router (multicast receiver host) )
But it doesnt work on Switch. (Router <-> Switch (multicast receiver host) )
Let me show:
==============================================================
R5 (sender ) <-Ethernet-> R1 ( receiver)
Sender has not multicast enabled.
Reciever has not multicast enabled except command ip igmp join-group
225.1.1.1.
Rack1R5#sh run | i multicast|pim <- On Router5 no multicast routing and
no interfaces with PIM enabled !!!
Rack1R5#sh run int fa 0/0
interface FastEthernet0/0
ip address 152.1.125.5 255.255.255.0
Rack1R1#sh run | i multicast|pim <- On Router1 no multicast routing and
no interfaces with PIM enabled !!!
Rack1R1#sh run int fa 0/0
interface FastEthernet0/0
ip address 152.1.125.1 255.255.255.0
ip igmp join-group 225.1.1.1
And IT IS WORKING!!!
Rack1R5#ping 225.1.1.1 Sending 1, 100-byte ICMP Echos to
225.1.1.1, timeout is 2 seconds:
Reply to request 0 from 152.1.125.1, 4 ms
R1 works like IGMP host. R5 multicasts ping on all interfaces and R1 is
replyes. And it is predictable!
And there is no need for multicast routing!!!
=============================================================
But. The same is not working with Router <-> Switch
I have used join-group on switche's Vlan and on Routed port - does not
work...
Why?
WBR,
Maxim
Bit Gossip wrote:
> Hi Maxim,
> there is still one thing missing: even if IGMP is enable as you show,
> multicast routing is NOT until pim is configured on the interface.
> Thanks,
> Luca.
>
> r2(config)#ip multicast-routing
> r2(config)#do show ip multicast interf <--- no intf mcast enabled
>
>
> r2(config-if)#ip igmp join-group 224.224.224.224
> r2(config-if)#do show ip multicast interf
> FastEthernet0/0 is up, line protocol is up
> Internet address is 10.1.2.2/24
> Multicast routing: disabled <-- NO mcast routing yet
> Multicast packets in/out: 177/0
> Multicast TTL threshold: 0
> Multicast Tagswitching: disabled
>
>
> On Mon, 2007-01-22 at 12:36 +0300, Maxim Kurushkin wrote:
>
>>>> when you configure 'ip igmp join' you dont enable igmp
>>>>
>> I'm not so sure...
>>
>> Rack1R1#sh run | i pim|multicast <- no pim and multicast configured
>> Rack1R1#
>> Rack1R1#sh run in fa 0/0
>> interface FastEthernet0/0
>> ip address 152.1.125.1 255.255.255.0
>> ip igmp join-group 225.1.1.1
>> Rack1R1#sh ip igmp interface
>> FastEthernet0/0 is up, line protocol is up
>> Internet address is 152.1.125.1/24
>> IGMP is enabled on interface <----- !!!!!!!!!!!!!!!!!!!!!!!!!!!1
>> Current IGMP host version is 2
>> Current IGMP router version is 2
>> IGMP query interval is 60 seconds
>> IGMP querier timeout is 120 seconds
>> IGMP max query response time is 10 seconds
>> Last member query count is 2
>> Last member query response interval is 1000 ms
>> Inbound IGMP access group is not set
>> IGMP activity: 1 joins, 0 leaves
>> Multicast routing is disabled on interface
>> Multicast TTL threshold is 0
>> Multicast groups joined by this system (number of users):
>> 225.1.1.1(1)
>> Rack1R1#
>>
>> WBR,
>> Maxim
>>
>> Bit Gossip wrote:
>>
>>> Hi Maxim,
>>> when you configure 'ip igmp join' you dont enable igmp but simply
>>> statically join a group as a client
>>> Thanks,
>>> Luca
>>>
>>> On Mon, 2007-01-22 at 08:53, Maxim Kurushkin wrote:
>>>
>>>
>>>> Hi, Group.
>>>> Sorry, Bit. but "IGMP is enabled on a interface only when pim is
>>>> enabled" is not true.
>>>> Because it works with Router-Router but not works with Router-3550. I
>>>> guess that it is something specific with multicast working on
>>>> switches, but I can't find any information about it.
>>>>
>>>> Example with Router-Router:
>>>> R5 s0/1 <--- PPP ---> s 0/1 R4
>>>>
>>>> R4:
>>>> ip multicast-routing
>>>> interface Serial0/1
>>>> ip address 152.1.54.4 255.255.255.0
>>>> encapsulation ppp
>>>> ip igmp join-group 225.4.4.4
>>>> <- there is no ip pim command on this interface !!!
>>>>
>>>> R5:
>>>> ip multicast-routing
>>>> interface Serial0/1
>>>> ip address 152.1.54.5 255.255.255.0
>>>> ip pim dense-mode
>>>> encapsulation ppp
>>>> clock rate 512000
>>>>
>>>> And it's work WITHOUT PIM enabled on R4:
>>>>
>>>> Rack1R5#ping 225.4.4.4
>>>> Type escape sequence to abort.
>>>> Sending 1, 100-byte ICMP Echos to 225.4.4.4, timeout is 2 seconds:
>>>> Reply to request 0 from 152.1.54.4, 4 ms
>>>>
>>>> But with 3550 it's not work!!! Why?
>>>>
>>>> WBR,
>>>> Maxim
>>>>
>>>>
>>>> Bit Gossip wrote:
>>>>
>>>>
>>>>> Hi Maxim,
>>>>> IGMP is enabled on a interface only when pim is enabled: strange but
>>>>> true. So if you do 'show ip igmp interface' you will see that
>>>>> switch/f0/3 is not there
>>>>> Thanks,
>>>>> Luca.
>>>>>
>>>>> On Fri, 2007-01-19 at 16:55 +0300, Maxim Kurushkin wrote:
>>>>>
>>>>>
>>>>>
>>>>>> Good day, Group.
>>>>>> I have strange behavour of 3550.
>>>>>> My topology is very clear:
>>>>>>
>>>>>> Router <-> 3550
>>>>>>
>>>>>> On Router:
>>>>>> interface FastEthernet0/1
>>>>>> ip address 152.1.3.3 255.255.255.0
>>>>>>
>>>>>> On Switch:
>>>>>> interface FastEthernet0/3
>>>>>> no switchport
>>>>>> ip address 152.1.3.8 255.255.255.0
>>>>>> ip igmp join-group 225.3.3.3
>>>>>>
>>>>>> BUT:
>>>>>> Router#ping 225.3.3.3
>>>>>> Type escape sequence to abort.
>>>>>> Sending 1, 100-byte ICMP Echos to 225.3.3.3, timeout is 2 seconds:
>>>>>> .
>>>>>> Router#
>>>>>>
>>>>>> Ping work only if I switch on pim on switch:
>>>>>>
>>>>>> interface FastEthernet0/3
>>>>>> no switchport
>>>>>> ip address 152.1.3.8 255.255.255.0
>>>>>> ip pim dense-mode
>>>>>> ip igmp join-group 225.3.3.3
>>>>>>
>>>>>> Then:
>>>>>> Router#ping 225.3.3.3
>>>>>> Type escape sequence to abort.
>>>>>> Sending 1, 100-byte ICMP Echos to 225.3.3.3, timeout is 2 seconds:
>>>>>> Reply to request 0 from 152.1.3.8, 4 ms
>>>>>> Router#
>>>>>>
>>>>>> Why Switch dont work like host (multicast receiver)? Why it work only
>>>>>> with PIM enabled on interface?
>>>>>>
>>>>>> WBR,
>>>>>> Maxim
>>>>>>
>>>>>> _______________________________________________________________________
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>>>>>>
>>>>>>
>>>>>>
>>>>> _______________________________________________________________________
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