Carlos, I had a good laugh when I read your email!! I used have exactly the same feeling, but fortunately the labs are great and now multicast isn't quite so bad anymore.
To Multicast Miseries! Rich -----Original Message----- From: [email protected] on behalf of Bryan Bartik Sent: Thu 7/9/2009 5:38 PM To: Carlos Valero Cc: [email protected] Subject: Re: [OSL | CCIE_RS] Vol 3, Lab 2, Task 5.1 (Multicast) Carlos, Yep, it looks like the ACL on R7 should be on R2 and vice versa. On Thu, Jul 9, 2009 at 6:19 PM, Carlos Valero <[email protected]> wrote: > Made a little mistake on the requirements section. > The second part should be like this: > > Configure R7 to announce candidacy as an RP for Groups: > - First octet = 225 or 227 > - Second octet less than 128 > - Priority = 20 > > Originally I wrote Priority = 10 > > But the solution it is being configured with Priority = 10 > > - ip pim rp-candidate l1 group-list 51 prio 10 > > That's exactly the source of my confusion. > > Why is R7 configuration based on R2's requirements and vice-versa? > > > --- On *Thu, 7/9/09, Carlos Valero <[email protected]>* wrote: > > > From: Carlos Valero <[email protected]> > Subject: Re: [OSL | CCIE_RS] Vol 3, Lab 2, Task 5.1 (Multicast) > To: [email protected], "Joe Astorino" <[email protected]> > Date: Thursday, July 9, 2009, 7:26 PM > > > Hello, > > I think I need some help with this task. > It seems to be quite simple, but to me the solution seems to be backwards > and I'm very confused and stock! > > Requirements: > > Configure R2 to announce candidacy as an RP for Groups: > - First octet = 225 or 227 > - Priority = 10 > > Configure R7 to announce candidacy as an RP for Groups: > - First octet = 225 or 227 > - Second octet less than 128 > - Priority = 10 > > Solution: > > R2: > > access-list 51 permit 225.0.0.0 0.255.255.255 > access-list 51 permit 227.0.0.0 0.255.255.255 > > ip pim rp-candidate l1 group-list 51 prio 20 > ip pim bsr-candidate l1 > > R7: > > access-list 51 permit 225.0.0.0 0.127.255.255 > access-list 51 permit 227.0.0.0 0.127.255.255 > access-list 51 permit 225.0.0.0 0.127.255.255 > access-list 51 permit 227.0.0.0 0.127.255.255 > > ip pim rp-candidate l1 group-list 51 prio 10 > ip pim bsr-candidate l1 > > This seems to be backwards to me! > > That is, the requirements state that R2 should have a Priority = 10 and > R7 should have a Priority = 20 > > But it is configured backwards! R2 = 20 and R7 = 10! > > Needless to say, the ACL also seem to be backwards to me! > > Obviously, there is something that I'm missing here. > And frankly I don't know what it is. > > I hope somebody can help. > > Did I mention that Multicast is my less favorite topic? > Actually I should say that I almost hate it :-( > > > > > > > > > --- On *Wed, 7/8/09, Joe Astorino <[email protected]>* wrote: > > > > > > -----Inline Attachment Follows----- > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > -- Bryan Bartik CCIE #23707 (R&S), CCNP Sr. Support Engineer - IPexpert, Inc. URL: http://www.IPexpert.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
