From: srdja blagojevic (srdja1@pexim.co.yu)
Date: Wed Jul 05 2006 - 03:14:19 ART
Sami,
afaik with deny statement in ACL you are forcing groups to stay in dense
mode (old IOS code do not have this feature). This is why on R5 you do not
have RP-to-group mapping for 225.0.0.0/8 group. When you remove ACL, you are
permiting group 225.0.0.0/8 to be in sparse mode, so you can see RP-to-group
mapping on R5. Try to make ACL on R5 without using explicit deny statement
and it should work (implicit deny any any, at the end of list do not fall
under this rule).
HTH,
Srdja
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Sami
Sent: Wednesday, July 05, 2006 00:26
To: Brian McGahan
Cc: ccielab@groupstudy.com
Subject: Re: PIM group
Brian,
Thanks for your reply but my question is for group 225.0.0.0/8 for which
R3 is RP why there is no mapping , is there any problem with access list.
If I remove this access list from R5 , R3 start sending annoucement for
group 225.0.0.0/8. This is IE VOL2 lab 3 multicast scenario.
Task says R3 should announce itself RP for 225.0.0.0/8 group and rest of
multicast group RP is R5.
My access list config on R3 and R5
R3#show access-lists
Standard IP access list 61
10 permit 225.0.0.0, wildcard bits 0.255.255.255
R5#show access-lists
Standard IP access list 61
10 deny 225.0.0.0, wildcard bits 0.255.255.255
20 permit 224.0.0.0, wildcard bits 15.255.255.255
Is there any problem with access list ?
Thanks
On 7/4/06, Brian McGahan <bmcgahan@internetworkexpert.com> wrote:
>
> It means that the device 150.1.5.5 will be the RP for all
> groups
> (224.0.0.0/4) except for the 225.0.0.0/8 range. In other words it
> will service only 224.0.0.0 - 224.255.255.255 and 226.0.0.0 -
> 239.255.255.255.
>
>
> HTH,
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
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>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > Sami
> > Sent: Tuesday, July 04, 2006 11:48 AM
> > To: ccielab@groupstudy.com
> > Subject: PIM group
> >
> > CCO doesn't have any explanation about (-) sign in group field ,
> somebody
> > know why 225.0.0.0/8 is shown as (-) ?
> >
> > R5#show ip pim rp mapping
> > PIM Group-to-RP Mappings
> > This system is an RP (Auto-RP)
> >
> > Group(s) 224.0.0.0/4
> > RP 150.1.5.5 (?), v2v1
> > Info source: 150.1.3.3 (?), elected via Auto-RP
> > Uptime: 00:02:38, expires: 00:045
> > *Group(s) (-)225.0.0.0/8
> > * RP 150.1.5.5 (?), v2v1
> > Info source: 150.1.3.3 (?), elected via Auto-RP
> > Uptime: 00:00:14, expires: 00:02:41 R5# *Jul 4
> > 16:44:47.014: Auto-RP(0): Build RP-Announce for 150.1.5.5, PIMv2/v1,
> > ttl 16, ht 181 **Jul 4 16:44:47.014: Auto-RP(0): Build announce
> > entry for (-
> > )(225.0.0.0/8)
> >
> > **Jul 4 16:44:47.014: Auto-RP(0): Build announce entry for
> (224.0.0.0/4)
> > *Jul 4 16:44:47.014: Auto-RP(0): Send RP-Announce packet on
> Serial0/0/0
> > *Jul 4 16:44:47.014: Auto-RP(0): Send RP-Announce packet on
> > FastEthernet0/0 *Jul 4 16:44:47.014: Auto-RP(0): Send RP-Announce
> > packet on
> > FastEthernet0/1
> > *Jul 4 16:44:47.014: Auto-RP: Send RP-Announce packet on Loopback0
> > R5#
> >
> >
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