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Log from #cisco at freenode 2006-07-12
[00:05]<sdac2jd>One free 7206 to good home
[00:05]<sdac2jd>7206 VXR
[00:06]<gndyvx>i'll take it
[00:06]<gndyvx>:)
[00:06]<sdac2jd>Maybe you could make it work then
[00:06]<sdac2jd>crazy fuckin thing
[00:06]<gndyvx>heh
[00:06]<gndyvx>what are you trying to do?
[00:06]<sdac2jd>I have my external network
[00:06]<sdac2jd>and my internal network
[00:07]<gndyvx>terrific
[00:07]<sdac2jd>and I am trying to make my 172.16.1.xxx subnet route through the router and ride my 67.90.225.x Route
[00:07]<sdac2jd>I have my Fast Ethernet Downlink to my Catalyst 5000 Series,
[00:07]<gndyvx>k
[00:07]<gndyvx>we talking about nat then?
[00:07]<sdac2jd>and then my 10bt Module in the 7206vxr going to the 172.16
[00:07]<sdac2jd>Subnet
[00:08]<sdac2jd>whcih acts a firewall.gateway and goes itno my Catalyst 5000 Series
[00:08]<sdac2jd>and when I enable the 10bt Module it kills the whole network
[00:08]<sdac2jd>So yes, NATing part of my network out
[00:08]<sdac2jd>while allowing the rest to use my static IP
[00:08]<sdac2jd>blog
[00:08]<sdac2jd>block*
[00:09]<gndyvx>interesting
[00:09]<gndyvx>what NPE?
[00:09]<sdac2jd>400
[00:09]<gndyvx>check your BW points?
[00:09]<sdac2jd>eh?
[00:10]<gndyvx>there are 2 PCI backblanes on a 7200 (3 on the G1's and G2)
[00:10]<gndyvx>and there are Bandwidth points for each backplane
[00:11]<fjzvxnz-wjzc>sickboy: I want that 7200; :)
[00:12]<sdac2jd>so how do i check the bandwidth points
[00:12]<fjzvxnz-wjzc>so if you were serious about getting rid of it, i'll snap that up in a heartbeat ;)
[00:13]<gndyvx>http://www.cisco.com/application/pdf/en/us/guest/products/ps341/c1161/ccmigration_09186a008009184d.pdf
[00:15]<sdac2jd>ok so I take each device and devide it down from the total of the 2 PCI buses
[00:18]<gndyvx>yeah pretty much
[00:19]<sdac2jd>fun
[00:19]<sdac2jd>since i blow at math
[00:19]<ljanuz>nemith: bandwidth points, those are the things that you get when you look under your 7206 bottlecap, right? (/me has GE1s)
[00:19]<gndyvx>it's freaking addition
[00:20]<gndyvx>Loceur: yeah
[00:28]<sdac2jd>Ok so I did my bandwidth points and I am in range for it to work correctly
[00:30]<gndyvx>thats good
[00:30]<gndyvx>so what happens?
[00:30]<sdac2jd>Well I am actually using the NPE 300
[00:31]<sdac2jd>but I dont think I have nat confifured
[00:31]<sdac2jd>configured
[00:31]<ljanuz>even if you're over the limit, it just gives you an annoying nag when you plug it in
[00:31]<ljanuz>it still works
[00:31]<gndyvx>not well
[00:31]<ljanuz>well enough
[00:32]<sdac2jd>I just wish my boss would buy a Layer 3 Switch
[00:32]<sdac2jd>then i wouldn't have to be doing this at the router level
[00:32]<gndyvx>backplane over subscribtion is more serious than lets say port over subscribtion
[00:32]<gndyvx>sickboy: nat actually will work better on your 7200
[00:32]<ljanuz>nemith: he's running a 5000, a 7206 with NPE 300, he's not on what you'd call top of the line hardware
[00:32]<gndyvx>not bad
[00:32]<sdac2jd>7206 VXR
[00:32]<sdac2jd>The 5000 Series is a pile
[00:33]<gndyvx>anyway
[00:33]<ljanuz>sorry sickboy, I'm not saying you have crap
[00:33]<ljanuz>just that over subscribing isn't your major concern, imho
[00:33]<sdac2jd>no, I know crap is what my dogs did all over the house yesterday :-D
[00:33]<gndyvx>i say you should never oversubscribe the backplane of your 7200
[00:34]<gndyvx>i don't care if you're next hop is a lump of dog shit
[00:34]<ljanuz>would you care if you had to fork out the gold plated road to get to that pile?
[00:35]<ljanuz>why doesn't nickserv like me anymore
[00:36]<gndyvx>Loceur: i am saying you have the possibility to have issues even when you aren't pushing much traffic through the router
[00:36]<gndyvx>making the 7200 your weakest link
[00:37]<ljanuz>we pushed alot through our NPE-300. Dual OC3s and a gige
[00:37]<ljanuz>now, we ran at 80% util, but it worked fine
[00:37]<gndyvx>not at OC-3 or gig-e speeds
[00:37]<fjzvxnz-wjzc>(you are the weakest link: goodbye).
[00:38]<ljanuz>so, now lets put it in perspective, he's talking about "10bt"
[00:38]<sdac2jd>why is my 7206 saying that my PXF commands are not recognized
[00:38]<ljanuz>10 meg can't hurt a fly unless you're doing policy routing (and we tried that)
[00:39]<fjzvxnz-wjzc>yeah, 7200vxr should be able to do 100 mip wirespeed without too much trouble
[00:39]<gndyvx>Loceur: so.. never over subscribe your backplane
[00:39]<gndyvx>:P
[00:39]<ljanuz>that hurt... policy routing (for a simple set next hop on a /24 netmask) kicked the 7206 hard
[00:39]<fjzvxnz-wjzc>... if it's just basic eth<->eth routing, anyways
[00:39]<gndyvx>loather-work: depends on the npe
[00:39]<fjzvxnz-wjzc>that's true
[00:39]<gndyvx>but yes
[00:39]<sdac2jd>All I need is for the people who are on my 172.16.1 subnet to get out of the router
[00:39]<gndyvx>NPE-100 with no services will no 100mbps
[00:40]<gndyvx>er
[00:40]<gndyvx>51.20mbps
[00:40]<ljanuz>nemith: it's a matter of cost justification, and if this is for music streaming for his coworkers, then oversubscribe the crap and move on
[00:40]<fjzvxnz-wjzc>thats not much faster than a 3640
[00:40]<gndyvx>Loceur: well he isn't oversubcribing it
[00:40]<gndyvx>but as a general rule... don't fucking do it
[00:41]<ljanuz>sorry sb, we're debating semantics
[00:41]<gndyvx>Loceur: about double the speed of a 3640
[00:41]<ljanuz>that was loather
[00:41]<gndyvx>l<tab> who cares
[00:42]<ljanuz>and I have experience that says that their "oversubscription" of a backplane is a conservitive number
[00:42]<sdac2jd>it is taking a DS3 Clear Channel and pushing it out over a Motorola Canopy network
[00:42]<fjzvxnz-wjzc>wha? i pulled ~38 mbit through my 3640 :(







