swinog July 2007

swinog@lists.swinog.ch

26 participants
26 discussions

RE: [swinog] MPLS VRF source routing (inter-vrf routing)

by Varaillon Jean Christophe

Could NAT be an option? Jean-Christophe Varaillon ------------ ALTEC Telecoms - NOC 14, Patmou, 151 23 Maroussi, Greece Tel: +30 210 6872932 Fax: +30 210 6872904 E-mail: vajc(a)altectelecoms.gr ICQ: 264-755-242 -----Original Message----- From: swinog-bounces(a)lists.swinog.ch [mailto:swinog-bounces@lists.swinog.ch] On Behalf Of Steven.Glogger(a)swisscom.com Sent: Thursday, March 22, 2007 12:12 AM To: swinog(a)swinog.ch Subject: [swinog] MPLS VRF source routing (inter-vrf routing) hi all i've got some nice cisco bugs / features / whatever. some prerequisites: - 2 VRFs: vrf blue and vrf red - both vrfs have a different default route. - a PPP session / user terminating in vrf blue a specific route (10.0.1.0/29) is routed over static route (e.g. radius avpair) over the ppp session (vrf blue). this route is imported to vrf red by importing rd values and route-map filtering. so the connectivity from the red vrf to the vrf blue is working (one way). so, the goal (and this is the problem) is traffic souring that specific route should go back to vrf red. how i thought would be the simplest way to do it: policy routing. interface virtual-access123 ip policy route-map set-vrf-red ... ! access-list 110 permit 10.0.1.0 0.0.0.7 any route-map set-vrf-red permit 10 match ip address 110 set vrf red ! would be the nicest way of doing this. now the but: if you put the policy on the virtual-template / radius profile the session starts flapping (connect/disconnect/connect/disconnect....). so: not usable. my other approach was: interconnect vrf blue with vrf red by a vlan / interface. assume on vrf blue: fastethernet0/0 with 11.0.0.1/30 connnected to vrf red with fastethernet0/1 with 11.0.0.2/30. modifying the route map to: route-map set-vrf-red permit 10 match ip address 110 set interface fastethernet0/0 set ip next-hop 11.0.0.2 ! this will stop the flapping (disconnect/connect/disconnect...) of the ppp session and the whole routing works as expected.... BUT: somewhen it stops working because of one thousand possible CEF bugs ;-( i have to put "no ip route-cache cef" on the interconnection interface, then it works. some hours later (as already said) it stops working. when i do again "no ip route-cache cef" on the interface it works some other hours. i've tried several IOS for the C7200series and the only half-way working version is the 12.4T (or even 12.3T). so, now the big question to the community: 1) do you see any other working way doing source-routing from one vrf to another vrf? (there's a vrf source routing command, but i think this will really not scale) 2) do you have encountered the same CEF bugs? (i have seen them on 7206, 1841 and 2851 series routers) how cisco tells me to do it: http://www.cisco.com/en/US/products/sw/iosswrel/ps1838/products_feature_ guide09186a0080296409.html i would be glad to get some input from you guys. greetings -steven _______________________________________________ swinog mailing list swinog(a)lists.swinog.ch http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog Disclaimer The information in this e-mail and any attachments is confidential. It is intended solely for the attention and use of the named addressee(s). If you are not the intended recipient, or person responsible for delivering this information to the intended recipient, please notify the sender immediately. Unless you are the intended recipient or his/her representative you are not authorized to, and must not, read, copy, distribute, use or retain this message or any part of it. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses.

16 years

Re: [swinog] Virtua is hiring !

by pvollenweider＠jahia.com

Hi, I am currently out of the office until july 30th. For business or technical support you can contact Michel Romy (mromy(a)jahia.com) or Tristan Renaud (trenaud(a)jahia.com). Best Regards, Philippe ---------- Bonjour, Je serais en congé jusqu'au 30 Juillet. Pour des questions d'ordre commerciales ou techniques vous pouvez contacter: Michel Romy (mromy(a)jahia.com) ou Tristan Renaud (trenaud(a)jahia.com). Salutations, Philippe

16 years, 2 months

Virtua is hiring !

by Marcel Prisi

Hi all, Virtua is looking for a french speaking network & sysadmin in Aubonne. Details : http://www.virtua.ch/fr/jobs.html Thanks !

16 years, 2 months

Re: [swinog] Netlantis - Routing Table Geoanalysis

by pvollenweider＠jahia.com

16 years, 2 months

Netlantis - Routing Table Geoanalysis

by Philippe Bourcier

Hi, Sorry for the cross-post. The Netlantis team (Pascal Gloor and me) is pleased to announce a new BGP routing tables visualization project. This project is called Routing Table Geoanalysis and aims at representing various statistics based on the analysis of a BGP routing table. The result of this analysis is a poster-size computer-generated image (12+ Megapixels) which you can easily print. Project's URL : http://rtg.netlantis.org/ The statistics for each routing table we analyse are : - The distribution across continents (or more precisely geo-political areas) of the total number of IP addresses announced - The number of IP addresses announced for 100 inhabitants of these areas - The number of routes, IP addresses and the average number of IP addresses per route - The main upstream AS's share in the routing table (in number of IP) and the geographic distribution of IP addresses announced through or by them - The distribution of AS path length by continent - The prefix size distribution The geo-political areas (I'm abusively calling continents) used for the statistics are : Africa, Asia, Central America, Europe, Middle-East, North America, Oceania and South America. When it's relevant, I also use the area World which is simply a way to display the average statistics for the whole routing table. The posters (and statistics) will be automatically updated every month. English not being my native language, I'll be happy if some people can help me fix or improve my wording and explanations so they can be better understood, especially on this page: http://rtg.netlantis.org/?info=rtg I'm thinking about adding a page on which you could automatically upload (via curl) your clogin -c "term len 0\rsh ip bgp" every month so that any AS could also be listed without the need to peer anywhere... tell me if you are interested by this feature. Thanks to routeviews for providing the routing tables and to our sponsors : IP-MAN, OVH and MaxMind. ps: If you want to sponsor Netlantis, we found a piece of hardware which might help us return in a short time to production, the thing is a DDRAM-based hard-disk (more details on my blog), contact me in private if you can help us get one. Sincerely, Philippe Bourcier web : http://sysctl.org/ blog : http://netlantis.blogspot.com

16 years, 2 months

AW: [swinog] Happy Sysadminday!

by Reto Burkhalter

Habe ein schönes "Danke, liebe Admins" Banner erhalten.. ich hätte mit mehr Bestechung gerechnet :) Gruss -----Ursprüngliche Nachricht----- Von: Michele Capobianco [mailto:Michele.Capobianco@online.ch] Gesendet: Freitag, 27. Juli 2007 11:31 An: 'swinog(a)lists.swinog.ch' Betreff: [swinog] Happy Sysadminday! Alle jahre wieder.... Na? Was habt ihr für geschenke bekommen? http://www.sysadminday.ch Gruss aus Wil Michele

16 years, 2 months

Happy Sysadminday!

by Michele Capobianco

Alle jahre wieder.... Na? Was habt ihr für geschenke bekommen? http://www.sysadminday.ch Gruss aus Wil Michele

16 years, 2 months

Re: [swinog] Happy Sysadminday!

by pvollenweider＠jahia.com

16 years, 2 months

feedback on pppoe needed

by Spiess Bernd

hi swinog members we have the need to rollout a pppoe setup on our dsl colocations where static ip with mtu 1500 is actually in place. as i know many postings around the world regarding pppoe mtu problems and advices to customers to reduce mtu on their clients down to 1492, i wanted to ask for a feedback from you if you all have pppoe with 1500 (=1492) in place or someone uses pppoe with 1508 from cpe to pppoe-server? if you use 1500: are the mentioned problems with websites (eg: gmx) or ipsec setups still an issue ? thanx and best regards from austria to our neighbors bernd spiess / happynet.at / i3b.at

16 years, 2 months

Re: Re: [swinog] feedback on pppoe needed

by pvollenweider＠jahia.com

16 years, 2 months

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swinog July 2007