[WISPA] MPLS / Mikrotik Assistance Needed
Good morning. We are in need of anyone who has deployed MPLS across a WISP network of decent size to help us resolve a few issues we are having with our MPLS implementation. We have about 50 routers / towers involved, fairly meshed. I love and appreciate free advice that can help. I am willing to pay consultant(s) as well. My only problem to date - I can't seem to entice anyone into helping us - paid or otherwise. If you know how to implement MPLS on Mikrotik routers or know someone who does, please contact me, we would really appreciate some assistance. Scott Carullo Technical Operations 855-FLSPEED x102 ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
Re: [WISPA] MPLS / Mikrotik Assistance Needed
Hi Scott, What in particular are you looking to achieve? Many thanks, Paul. - Reply message - From: Scott Carullo sc...@brevardwireless.com To: wireless@wispa.org, us...@wispa.org Cc: Carullo, Scott sc...@flhsi.com Subject: [WISPA] MPLS / Mikrotik Assistance Needed Date: Mon, Nov 11, 2013 15:45 Good morning. We are in need of anyone who has deployed MPLS across a WISP network of decent size to help us resolve a few issues we are having with our MPLS implementation. We have about 50 routers / towers involved, fairly meshed. I love and appreciate free advice that can help. I am willing to pay consultant(s) as well. My only problem to date - I can't seem to entice anyone into helping us - paid or otherwise. If you know how to implement MPLS on Mikrotik routers or know someone who does, please contact me, we would really appreciate some assistance. Scott Carullo Technical Operations 855-FLSPEED x102 -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
Re: [WISPA] MPLS / Mikrotik Assistance Needed
Hi Scott, Assuming you are referring to this thread: http://forum.mikrotik.com/viewtopic.php?f=14t=78755 We have run into many issues with MPLS on x86 boxes, related to MTU, and found a few workarounds (none ideal)... Placing a 'shim' VLAN, or two, between the physical ethernet interface and MPLS often seems to help. This does impact performance, but not as badly as running MPLS directly on the ethernet. This only ever seems to be necessary at the interfaces of x86 boxes, and whatever they attach to. Using only L2VPN/VPLS (no IP-over-MPLS or L3VPN), setting the MPLS MTU at 1492 or lower, and letting VPLS FAR handle fragmentation (it does a much better job than IP fragmentation, and is almost transparent to the end user). Again, this impacts performance, as it nearly doubles the number of frames that your transport links must carry. Move the MPLS boundary back, so that the x86 boxes are not participating. For us, this often required extra hardware. Also, make sure you are testing from and to boxes that are not participating in MPLS. I.e. test CE to CE, not PE to PE, or PE to CE; also, test UDP in addition to TCP. For some reason x86 boxes acting as PE routers often show far worse TCP performance than their actual forwarding performance. I've had some paths with x86 PEs that are easily able to move 300+Mbps CE to CE; but when testing between the PEs, the test maxes out at 5-6Mbps. Good luck. --Eric From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Scott Carullo Sent: Monday, November 11, 2013 7:45 AM To: wireless@wispa.org; us...@wispa.org Cc: Carullo, Scott Subject: [WISPA] MPLS / Mikrotik Assistance Needed Good morning. We are in need of anyone who has deployed MPLS across a WISP network of decent size to help us resolve a few issues we are having with our MPLS implementation. We have about 50 routers / towers involved, fairly meshed. I love and appreciate free advice that can help. I am willing to pay consultant(s) as well. My only problem to date - I can't seem to entice anyone into helping us - paid or otherwise. If you know how to implement MPLS on Mikrotik routers or know someone who does, please contact me, we would really appreciate some assistance. Scott Carullo Technical Operations 855-FLSPEED x102 [http://www.flhsi.com/files/emaillogo.jpg] ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
Re: [WISPA] MPLS / Mikrotik Assistance Needed
Thanks Eric. Yes that thread and this email are related. Thanks for taking the time to email your thoughts, we will look into those specific issues. Do you see any issue running ROS 5.26 and 6.6 together with MPLS? We were going to use ROS 6.6 but had BGP issues when we upgraded to that so went back to 5.26 and BGP is happy now. Some hardware we have required v6 for the ethernet driver upgrade so the MTU could be set higher on some of our routers. Thanks Scott Carullo Technical Operations 855-FLSPEED x102 From: Eric Flanery eflan...@fsr.com Sent: Monday, November 11, 2013 11:41 AM To: sc...@brevardwireless.com sc...@brevardwireless.com, WISPA General List wireless@wispa.org, us...@wispa.org us...@wispa.org Cc: Carullo, Scott sc...@flhsi.com Subject: RE: [WISPA] MPLS / Mikrotik Assistance Needed Hi Scott, Assuming you are referring to this thread: http://forum.mikrotik.com/viewtopic.php?f=14t=78755 We have run into many issues with MPLS on x86 boxes, related to MTU, and found a few workarounds (none ideal). Placing a 'shim' VLAN, or two, between the physical ethernet interface and MPLS often seems to help. This does impact performance, but not as badly as running MPLS directly on the ethernet. This only ever seems to be necessary at the interfaces of x86 boxes, and whatever they attach to. Using only L2VPN/VPLS (no IP-over-MPLS or L3VPN), setting the MPLS MTU at 1492 or lower, and letting VPLS FAR handle fragmentation (it does a much better job than IP fragmentation, and is almost transparent to the end user). Again, this impacts performance, as it nearly doubles the number of frames that your transport links must carry. Move the MPLS boundary back, so that the x86 boxes are not participating. For us, this often required extra hardware. Also, make sure you are testing from and to boxes that are not participating in MPLS. I.e. test CE to CE, not PE to PE, or PE to CE; also, test UDP in addition to TCP. For some reason x86 boxes acting as PE routers often show far worse TCP performance than their actual forwarding performance. I've had some paths with x86 PEs that are easily able to move 300+Mbps CE to CE; but when testing between the PEs, the test maxes out at 5-6Mbps. Good luck. --Eric From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Scott Carullo Sent: Monday, November 11, 2013 7:45 AM To: wireless@wispa.org; us...@wispa.org Cc: Carullo, Scott Subject: [WISPA] MPLS / Mikrotik Assistance Needed Good morning. We are in need of anyone who has deployed MPLS across a WISP network of decent size to help us resolve a few issues we are having with our MPLS implementation. We have about 50 routers / towers involved, fairly meshed. I love and appreciate free advice that can help. I am willing to pay consultant(s) as well. My only problem to date - I can't seem to entice anyone into helping us - paid or otherwise. If you know how to implement MPLS on Mikrotik routers or know someone who does, please contact me, we would really appreciate some assistance. Scott Carullo Technical Operations 855-FLSPEED x102 ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
