Thanks Marc for the response. I probably should've left out the administrative scope in the 1st example to avoid confusion.
Was mainly trying to confirm if there's any difference between the "ip multicast boundary" command and the extended ACL. I think they both achieve the same result, and are just different methods. Kevin -----Original Message----- From: marc abel [mailto:[email protected]] Sent: Friday, June 17, 2011 3:05 PM To: Huang, Kevin Cc: [email protected] Subject: Re: [OSL | CCIE_RS] Control mcast on an interface You could also do: access-list 23 deny 239.0.0.0 0.255.255.255 access-list 23 permit any int gi0/0 ip multicast boundary 23 filter-autorp On Fri, Jun 17, 2011 at 1:53 PM, marc abel <[email protected]> wrote: > The first one blocks auto-rp and Administratively scoped multicast > addresses. The second one only blocks auto-rp. > > -Marc > > On Thu, Jun 16, 2011 at 3:54 PM, Huang, Kevin <[email protected]> wrote: >> DSG for Vol1 Lab24 Task24.20 uses the "ip multicast boundary" interface >> command w/ a standard ACL applied to it: >> >> access-list 23 deny 239.0.0.0 0.255.255.255 >> access-list 23 deny 224.0.1.39 >> access-list 23 deny 224.0.1.40 >> access-list 23 permit any >> >> int gi0/0 >> ip multicast boundary 23 >> ============ >> >> DSG for Vol3 Lab4 Task4.1 just applies an extended ACL to the interface: >> >> ip access-l ext NO-AUTORP >> deny ip any host 224.0.1.39 >> deny ip any host 224.0.1.40 >> permit ip any any >> >> int s0/1/0 >> ip access-group NO-AUTORP in >> ip access-group NO-AUTORP out >> ============= >> >> Do both methods pretty much achieve the same goal? >> Is there any difference other than the fact that it's more granular w/ an >> extended ACL? >> >> Thx, >> Kevin >> >> ---------------------------------------------------------------------- >> CONFIDENTIALITY NOTICE: This email and any files transmitted with it are >> confidential and intended solely for the use of the individual or entity to >> which they are addressed. If you are not the intended recipient, you may >> not review, copy or distribute this message. If you have received this >> email in error, please notify the sender immediately and delete the original >> message. Neither the sender nor the company for which he or she works >> accepts any liability for any damage caused by any virus transmitted by this >> email. >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com >> > ---------------------------------------------------------------------- CONFIDENTIALITY NOTICE: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, you may not review, copy or distribute this message. If you have received this email in error, please notify the sender immediately and delete the original message. Neither the sender nor the company for which he or she works accepts any liability for any damage caused by any virus transmitted by this email. _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
