From: backbone systems (backbone.systems@gmail.com)
Date: Tue Nov 11 2008 - 13:44:01 ARST
Dear All ,
thanks for the input ... the last two options did work ... and i can
prety well understand the logic.
But Peter....the option u mentioned is not still working....
What is loopback X???? if i configure any other loopback interface
other than my lo0(MPGP one) ... the MDT tunnel goes down...
is it possible that i can make my MDT source as my vrf ABC
interface??? i dont think soo..
A little explanation from ur side will really help...
thanks.....
On Tue, Nov 11, 2008 at 4:50 PM, Con Spathas <ccie19226@googlemail.com> wrote:
> Petr - taking it to the next level as always! :-)
>
> Backbone - if you can't do the things Petr explained in a lab because you
> haven't been asked to etc... here's an example of what I do to ping over the
> MDT on a PE.
>
> For this example I setup a basic VPN network (R1 - R2 - R3 - R4 - R5 - R6)
> R1 and R5 are the CE routers
> R2 and R4 are the PE routers
> R3 is the P router
> R6 issued an IGMP join for 226.6.6.6 on its connection to R5
> R5 is the RP within the VPN (via AutoRP)
> R2-R5 on the SP side just running PIM-SM with SSM.
>
> I built an MDT tunnel between R2 and R4 using group 232.1.1.1
>
> So here's a ping from R1 to make sure things are working:
>
> R1#ping 226.6.6.6 rep 5
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 226.6.6.6, timeout is 2 seconds:
>
> Reply to request 0 from 56.56.56.6, 92 ms
> Reply to request 1 from 56.56.56.6, 112 ms
> Reply to request 2 from 56.56.56.6, 132 ms
> Reply to request 3 from 56.56.56.6, 128 ms
> Reply to request 4 from 56.56.56.6, 144 ms
>
> Okay that's what we want.
> Let's try a ping on R2 (PE router)
>
> R2#ping vrf R1 226.6.6.6 rep 5
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 226.6.6.6, timeout is 2 seconds:
> .....
>
> Okay not so good. So let's try an extended ping with the MDT tunnel as the
> interface.
> No configuration changes have been made on R2.
>
> R2#ping vrf R1
> Protocol [ip]:
> Target IP address: 226.6.6.6
> Repeat count [1]: 5
> Datagram size [100]:
> Timeout in seconds [2]:
> Extended commands [n]: y
> Interface [All]: tunnel0 <----- here
> Time to live [255]:
> Source address: 12.12.12.2 <----- R2's address in the VPN
> Type of service [0]:
> Set DF bit in IP header? [no]:
> Validate reply data? [no]:
> Data pattern [0xABCD]:
> Loose, Strict, Record, Timestamp, Verbose[none]:
> Sweep range of sizes [n]:
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 226.6.6.6, timeout is 2 seconds:
> Packet sent with a source address of 12.12.12.2
>
> Reply to request 0 from 56.56.56.6, 80 ms
> Reply to request 1 from 56.56.56.6, 112 ms
> Reply to request 2 from 56.56.56.6, 80 ms
> Reply to request 3 from 56.56.56.6, 104 ms
> Reply to request 4 from 56.56.56.6, 104 ms
>
>
> Excellent!
>
>
>
> On Mon, Nov 10, 2008 at 8:20 PM, Alexey Tolstenok <alextols@gmail.com>
> wrote:
>>
>> Hello, backbone
>> Try to add "ip igmp static-group 225.1.1.1" under PE1 vrf interface
>> configuration.
>>
>> 2008/11/9 backbone systems <backbone.systems@gmail.com>
>>
>> > CUST A-1----PE1----P-----PE2-----CUST A -2--225.1.1.1
>> >
>> > I am trying to Ping from CUST A site 1 to site 2 and the reply is
>> > successful.
>> > But when try to ping the destination from my PE1 router i dont get
>> > replies,
>> >
>> > PE1------ping vrf ABC 225.1.1.1
>> >
>> > wen i do debug ip mpack... i can see on PE1 that the source of the
>> > packet is lo0 of PE1 bc mdt by default take the source interface as
>> > the MBGP interface used for connectivity.
>> >
>> > is there any way i can change this default behaviour? How can i make
>> > my ping successful sitting on PE1
>> >
>> > Any gud references on this topic will be helpful.
>> >
>> >
>> > Blogs and organic groups at http://www.ccie.net
>> >
>> > _______________________________________________________________________
>> > Subscription information may be found at:
>> > http://www.groupstudy.com/list/CCIELab.html
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
>> --
>> Alexey Tolstenok
>> CCIEx2 (R&S, SP) #17405, JNCIE-M #313, CCSI #31737
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
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