From: hadek.el-ayachi@nsn.com
Date: Tue Oct 30 2007 - 13:55:38 ART
Longest match has the same meaning as when looking for entry in ip
routing table.
The longest match is 239/8 in this case. So, MA receive two CRP
announcements, one for 239/8 and other for 224/4. it starts by the
longest match which is 239/8 ignoring 224/4.
-----Original Message-----
From: ext Gregory Gombas [mailto:ggombas@gmail.com]
Sent: mardi 30 octobre 2007 16:46
To: El Ayachi Hadek (NSN - MA/Rabat)
Cc: ccielab@groupstudy.com
Subject: Re: FW: Auto-RP : Multiple C-RPs for the same group
By longest match do you mean advertise the group with /32?
Would that be accomplished like this?
access-list 1 permit 239.5.5.5 0.0.0.0
On 10/30/07, hadek.el-ayachi@nsn.com <hadek.el-ayachi@nsn.com> wrote:
> RP is selected based on the following criteria, respectively:
> 1- Longest match
> 2- low Priority
> 3- high hash
> 4- high Ip address
> In case of AutoRP, this is equivalent to the 4th condition, provided
> that there are many condidates for the same prefix (exact match)
>
> ________________________________
>
> From: ext Toh Soon, Lim [mailto:tohsoon28@gmail.com]
> Sent: mardi 30 octobre 2007 15:21
> To: El Ayachi Hadek (NSN - MA/Rabat)
> Cc: ccielab@groupstudy.com
> Subject: Re: Auto-RP : Multiple C-RPs for the same group
>
>
>
> Hi,
>
> Kindly correct me if I'm wrong.
>
> A Mapping Agent selects the RP for a given multicast group address
> range(s) based on the candidate RPs' IP address. The highest candidate
> RP IP address is selected.
>
> In other words, the tie-breaker is purely based on C-RP's IP address.
>
>
> Thank you.
>
> B.Rgds,
> Lim TS
>
>
>
>
> On 10/30/07, hadek.el-ayachi@nsn.com <hadek.el-ayachi@nsn.com> wrote:
>
> The task is to make R5 RP for all but 239/8, so you should use
> selective
> acl denying 239/8.
> Otherwise, the RP is selected based on longest match (before
> prefering
> low priority, high hash or high IP address)
> All that I know!
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com ] On
> Behalf Of
> ext Toh Soon, Lim
> Sent: mardi 30 octobre 2007 13:51
> To: ccielab@groupstudy.com
> Subject: Auto-RP : Multiple C-RPs for the same group
>
> Hi Group,
>
> I have the following Auto-RP scenario:
>
> R7
> --
> 1. C-RP for 239.0.0.0/8
> 2. RP address 200.0.0.7
>
> R5
> --
> 1. Mapping agent
> 2. C-RP for all groups except 239.0.0.0/8 3. RP address
> 200.0.0.5
>
> I guess one way of configuring this is, we define an ACL on R5
> that
> matches groups 224 until 238 (summarizing whatever we can) and
> let R5
> announce this group-list.
>
> Another way I'm thinking of is, since R7's IP address is higher
> than
> R5's, I will configure R5 to announce, by default, all groups.
> When R5
> and R7 contend for group 239.0.0.0/8, R7 will win. R5 will be
> RP for the
> rest of the groups. In the end, this solution meets the task
> requirement
> and does not violate any rules but is it acceptable?
>
> Please share if you have other methods.
>
>
> Thank you.
>
> B.Rgds,
> Lim TS
>
>
>
This archive was generated by hypermail 2.1.4 : Fri Nov 16 2007 - 13:11:19 ART