Ahad, The Cores have Connections to other POPs Transiting IX circuits connected on them Also have some Customer on them so they do also act like a PE.
Thanks Erik Erik Sundberg Sr. Network Engineering Network Engineering Department p: 773.661.5532 c: 708.710.7419 e: esundb...@nitelusa.com Main: 888.450.2100 NOC 24/7: 866.892.0915 350 North Orleans Street, Suite 1300N Chicago, IL 60654 www.nitelusa.com<http://www.nitelusa.com/> [Nitel] Managed Telecom Services MPLS | Ethernet | Private Line | Internet | Voice | Security From: Ahad Aboss [mailto:a...@swiftelnetworks.com] Sent: Friday, May 4, 2018 9:16 AM To: Erik Sundberg <esundb...@nitelusa.com> Cc: NANOG <nanog@nanog.org> Subject: Re: Route Reflector Client Design Question Erik, Before I email my suggestions, can you clarify the followings; Do Core1 and Core2 also provide the function of BDRs peering with your upstream/s? Or Just acting as Core/RRs with 500Mbps of traffic traversing through them? Cheers Ahad On Fri, May 4, 2018 at 4:01 PM, Erik Sundberg <esundb...@nitelusa.com<mailto:esundb...@nitelusa.com>> wrote: I have a RR Client design question...... CORE1-------------------2x10G-----------------------CORE2 | | | | | 10G Ring | | | | | PE1----------PE2----------PE3----------PE4----------PE5 -Core1 & Core2 are RR Reflectors with full IPV4 Tables (ASR9K) -MPLS LDP Enabled -IGP is ISIS -Each PE peers only with Core1 and Core2 as RR Clients with iBGP -PE's are only receiving a default route from the Core Routers due to TCAM size of 20K (ASR920's\ME3800's) -The ring does not have that much traffic on it <500m, so I do not want to use additional 10G ports on the Core's and is why I have it in a 10G U ring. -Primary link to the cores is via the PE1 --- CORE1 Like......... For this discussion the link between PE5 to CORE2 is set up as a backup link. The scenario is I have traffic between PE2 and PE3. Since the PE's are only receiving a default route from the Cores. Traffic is label switch from PE2 - PE1 - Core1 does a IP lookup at Ingress then label switches back to PE1-PE2-PE3. This ends up being 5 hops and doubling the traffic on the link to the Cores. My questions is how do I get traffic to go directly between the PE's without going to the Core Routers? 1. Can I enable iBGP between the PE's in a full mesh to allow traffic between the PE's without going to the core's. Or does this break the Route Reflector model? 2. Create a route policy on the Core's advertising routes learned from the PE's back to all the PE's on the ring. 3. Is this one of the down sides to U Rings? 4. Leave it alone and move on to bigger and better things.... Thanks Erik ________________________________ CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you. ________________________________ CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you.
