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
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Hallo Zusammen
Cyberlink AG sucht per sofort eine(n) 1st/2nd Level SupporterIn. Mehr
Informationen auf unserer Homepage[1].
Freundliche Grüsse
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Sehr geehrte Geschäftspartnerin, sehr geehrter Geschäftspartner,
Ich werde ab 24.08.2007 nicht im Büro sein. Ich kehre zurück am
03.09.2007.
Ich werde Ihre Nachricht nach meiner Rückkehr beantworten.
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Mit freundlichen Grüßen
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Sitz Bielefeld, Amtsgericht Bielefeld HRA (beantragt), Ust-Id.Nr. DE
814420642, Geschäftsführer: Michael Tappe
GPS-Technik AG in Schlieren (ZH) is expanding its team
and is looking for a new Presales Engineer.
Responsibilities:
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Although skype is funny, see online status and have a chat, it's not a real
phone-solution.
Someone ever did transcontinental calls? 400ms+ rta?
The good old ISDN is much better :)
And if you dont like fiddeling around with ISDN and swisscom and so on, get
yourself a good internet connection (0% packetloss :)) and try one of the
SIP providers near you (like http://e-fon.ch). Some of them having quite
interesting prices, and if needed, extra-features (like web-based
pbx-config, iax trunks, etc).
Cheers
josh
-----Ursprüngliche Nachricht-----
Von: Per Jessen [mailto:per.jessen@enidan.ch]
Gesendet: Freitag, 17. August 2007 21:50
An: swinog(a)lists.swinog.ch
Betreff: Re: [swinog] Skype
Xaver Aerni wrote:
> Sorry Yann,
> It isn't only the difference between Skype and Telco.
> Whe have had internal an old TVA (mechanic). Since 1 Year we have a
> Siemens Hicom system. The old is now running by my brother. and it is
> working fine. (since 10 years now)
> The Hicom, has everytimes problemes. Sometime the Phones doesn't ring
> etc.
We moved to an Aastra box just before Christmas last year. Not a big
one, 10-12 extensions.
Before then end of January I had shifted everything to a box running
Asterisk. Far more flexible.
--
/Per Jessen, Zürich
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Morning (o;
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cheers
rick
Hi,
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--
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