Andrew Walding | 1 Jul 04:32 2004

: OSPF PE-CE routing

OK wizards...this is probably one of those "you dummy, you can't do that" 
questions...but here goes nonetheless.

I have a working VPN using eBGP.
The core MPLS domain is of course running MP-BGP, and OSPF.

Now, one of the sites on the VPN needs to be OSPF PE-CE.

I start the config, but cannot get the PE router to accept another routing 
instance of OSPF.  I enter:

(config)#router ospf 65101 vrf Customer

and the router basically does not error and just acts as if I am talking to 
a wall (which some would argue I should do more often :-))

Anyway...someone either tell me what I need to do or point me to the 
magical cure on cisco.com......

Thanks
Andy 

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yugandhar | 1 Jul 10:00 2004
Picon

: Regarding vrf

Hi all,
 
 
Is it possible to send the vrf and non-vrf traffic on a single link (between CE and PE link). If posssible ....can any one help me out?
 
 
 
Regards
Yugandhar
Joerg.Ammon | 1 Jul 10:49 2004

Re: : OSPF PE-CE routing


Hi Andrew,

do you have an interface in the vrf in the UP-state?
Otherwise the router won't be able to find a router-id to the process and
refuses to allocate the process...

Turn on terminal output and see, whether you receive an error message...

Best regards

Joerg Ammon

System Engineering
CC CompuNet AG & Co. oHG
A part of Computacenter plc
Hoerselbergstrasse 7, 81677 Muenchen, Germany
Phone: +49 (0)89-45712 248, Fax: +49 (0)173-50 2001362, Mobile: +49
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immediately by return email and delete the document.

Andrew Walding <andyw <at> cellstream.com> on 01.07.2004 04:32:56

To:      mpls-ops <at> mplsrc.com
cc:
Subject: [MPLS-OPS]: OSPF PE-CE routing

                                                                            
 -------------------------------------------------------------------------- 

OK wizards...this is probably one of those "you dummy, you can't do that"
questions...but here goes nonetheless.

I have a working VPN using eBGP.
The core MPLS domain is of course running MP-BGP, and OSPF.

Now, one of the sites on the VPN needs to be OSPF PE-CE.

I start the config, but cannot get the PE router to accept another routing
instance of OSPF.  I enter:

(config)#router ospf 65101 vrf Customer

and the router basically does not error and just acts as if I am talking to
a wall (which some would argue I should do more often :-))

Anyway...someone either tell me what I need to do or point me to the
magical cure on cisco.com......

Thanks
Andy

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Cain, Justin | 1 Jul 15:20 2004

RE: : Regarding vrf

One way I have used, was to use frame-relay and create a subinterface for MPLS and one for non-Mpls traffic.

 

Justin

 

From: yugandhar [mailto:yugandhark <at> mtech.idrbt.ac.in]
Sent: Thursday, July 01, 2004 4:00 AM
To: mpls-ops <at> mplsrc.com
Subject: [MPLS-OPS]: Regarding vrf

 

Hi all,

 

 

Is it possible to send the vrf and non-vrf traffic on a single link (between CE and PE link). If posssible ....can any one help me out?

 

 

 

Regards

Yugandhar

Jon Lewis | 1 Jul 15:40 2004

RE: : Regarding vrf

I've done the same thing.  On a PTP T1 or similar circuit, just set it up
as frame and make 2 PVCs.  On actual frame, you'd need to order a second
PVC from the telco.

On Thu, 1 Jul 2004, Cain, Justin wrote:

> One way I have used, was to use frame-relay and create a subinterface for
> MPLS and one for non-Mpls traffic.
>
>
>
> Justin
>
>
>
>   _____
>
> From: yugandhar [mailto:yugandhark <at> mtech.idrbt.ac.in]
> Sent: Thursday, July 01, 2004 4:00 AM
> To: mpls-ops <at> mplsrc.com
> Subject: [MPLS-OPS]: Regarding vrf
>
>
>
> Hi all,
>
>
>
>
>
> Is it possible to send the vrf and non-vrf traffic on a single link (between
> CE and PE link). If posssible ....can any one help me out?
>
>
>
>
>
>
>
> Regards
>
> Yugandhar
>
>

----------------------------------------------------------------------
 Jon Lewis                   |  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________

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M. ELK | 1 Jul 21:08 2004
Picon

: Cisco- Queing Algorithm


Found the following in CSCO doc :

quote

Queing Algorithm are activated only when a device is experiencing 
congestion,and in most cases are deactvated only when congestion clears.

Unquote

Q1- What is the definition of "congestion" . ie: when the box will consider 
the link is congested ??.
Q2- Not clear this "on" "off" behaviour . my understanding that the queing 
is done in hardware and
      should be always "on" irespective of the link congestion .

Appreciate to explain .

Brgds

_________________________________________________________________
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Martin Heusinger | 2 Jul 07:48 2004
Picon
Picon

Re: : Cisco- Queing Algorithm

Hi there!

First in a single CPU router there are two queueing mechanisms: hardware Q  
(tx-ring, always fifo) and a software queue (fifo, wfq, pq, ..., cbwfq,  
llq). The software Q is only invoked, when the hardware Q is full. In  
other words: Why should one Q a packet, if one can send it with line speed!
With respect to this you have a "on"-"off" behaviour of the software Q.
This is especially important for test scenarios: make sure you overload  
the link or you´re NOT testing the software Q!

On the other hand there are also platform dependant queueing mechanisms.  
F.e. the GSR has queues before the crossbar switch; some catalyst switches  
have input Qs and a different structure on output. Make sure you check  
your manuals (or visit the QoS course, where mainly everything is  
explained in detail ).

Hope this helps

Martin

On Thu, 01 Jul 2004 19:08:05 +0000, M. ELK <elkou141061 <at> hotmail.com> wrote:

>
> Found the following in CSCO doc :
>
> quote
>
> Queing Algorithm are activated only when a device is experiencing  
> congestion,and in most cases are deactvated only when congestion clears.
>
> Unquote
>
> Q1- What is the definition of "congestion" . ie: when the box will  
> consider the link is congested ??.
> Q2- Not clear this "on" "off" behaviour . my understanding that the  
> queing is done in hardware and
>       should be always "on" irespective of the link congestion .
>
> Appreciate to explain .
>
> Brgds
>
> _________________________________________________________________
> STOP MORE SPAM with the new MSN 8 and get 2 months FREE*  
> http://join.msn.com/?page=features/junkmail
>
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Martin Heusinger | 2 Jul 07:51 2004
Picon
Picon

Re: RE : : OSPF PE-CE routing

Hello Stephane and Andrew,

Just a remark: starting with IOS 12.3(4)T there are up to 32 OSPF  
processes per VRF.
(No idea what your routers CPU will think of running dozends of SPF "in  
parallel" ;-)

Kind regards

Martin

On Thu, 1 Jul 2004 22:44:17 +0200, Stephane BENFREDJ <stefb <at> free.fr> wrote:

> Hello andrew,
> there is one ospf process per vrf (plus the ospf backbone process in your
> case)
> ensure that you use different process numbers for each of them .
>
> hope this will help
> rgds
> stephane
>
>> -----Message d'origine-----
>> De : Andrew Walding [mailto:andyw <at> cellstream.com]
>> Envoyé : jeudi 1 juillet 2004 04:33
>> À : mpls-ops <at> mplsrc.com
>> Objet : [MPLS-OPS]: OSPF PE-CE routing
>>
>>
>> OK wizards...this is probably one of those "you dummy, you
>> can't do that"
>> questions...but here goes nonetheless.
>>
>> I have a working VPN using eBGP.
>> The core MPLS domain is of course running MP-BGP, and OSPF.
>>
>> Now, one of the sites on the VPN needs to be OSPF PE-CE.
>>
>> I start the config, but cannot get the PE router to accept
>> another routing
>> instance of OSPF.  I enter:
>>
>> (config)#router ospf 65101 vrf Customer
>>
>> and the router basically does not error and just acts as if I
>> am talking to
>> a wall (which some would argue I should do more often :-))
>>
>> Anyway...someone either tell me what I need to do or point me to the
>> magical cure on cisco.com......
>>
>> Thanks
>> Andy
>>
>> -------
>> The MPLS-OPS Mailing List
>> Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
>> Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
>>
>
>
> -------
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-- 
Dr. Martin Heusinger
CCIE #5980 CCSI 98285

Global Knowledge
Hungener Str. 6
60389 Frankfurt

Tel.: +49 69 90556700
FAX:  +49 69 90556729

mailto:Martin.Heusinger <at> GlobalKnowledge.de
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McCallum, Robert | 2 Jul 10:00 2004
Picon

RE: RE : : OSPF PE-CE routing

Andrew,

I bet you don't have any interfaces within that vrf.  Remember configuring
ospf for a vrf is 
just like normal ospf - you need at least one IP interface configured for
ospf to take a router-id from.
I have done this for customers on our MPLS network so if you have any
oddities feel free to drop me a line
and I shall "hopefully" be able to help you out.

Robert McCallum 
CCIE #8757 R&S
01415663448
07818002241 

> -----Original Message-----
> From: Stephane BENFREDJ [mailto:stefb <at> free.fr] 
> Sent: 01 July 2004 22:12
> To: mpls-ops <at> mplsrc.com
> Cc: 'Andrew Walding'
> Subject: RE : [MPLS-OPS]: OSPF PE-CE routing
> 
> 
> Hello andrew, 
> there is one ospf process per vrf (plus the ospf backbone 
> process in your
> case)
> ensure that you use different process numbers for each of them .
> 
> hope this will help
> rgds
> stephane
> 
> > -----Message d'origine-----
> > De : Andrew Walding [mailto:andyw <at> cellstream.com]
> > Envoyé : jeudi 1 juillet 2004 04:33
> > À : mpls-ops <at> mplsrc.com
> > Objet : [MPLS-OPS]: OSPF PE-CE routing
> > 
> > 
> > OK wizards...this is probably one of those "you dummy, you
> > can't do that" 
> > questions...but here goes nonetheless.
> > 
> > I have a working VPN using eBGP.
> > The core MPLS domain is of course running MP-BGP, and OSPF.
> > 
> > Now, one of the sites on the VPN needs to be OSPF PE-CE.
> > 
> > I start the config, but cannot get the PE router to accept
> > another routing 
> > instance of OSPF.  I enter:
> > 
> > (config)#router ospf 65101 vrf Customer
> > 
> > and the router basically does not error and just acts as if I
> > am talking to 
> > a wall (which some would argue I should do more often :-))
> > 
> > Anyway...someone either tell me what I need to do or point me to the
> > magical cure on cisco.com......
> > 
> > Thanks
> > Andy
> > 
> > -------
> > The MPLS-OPS Mailing List
> > Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
> > Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
> > 
> 
> 
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McCallum, Robert | 2 Jul 11:34 2004
Picon

RE: : Cisco- Queing Algorithm

Im sure the Cisco guys will answer this thread but I have configured various
levels of queues including the strict priority queue.  Even without
congestion you see the packets being appropriately placed into their queues.

Robert McCallum 
CCIE #8757 R&S
01415663448
07818002241 

> -----Original Message-----
> From: M. ELK [mailto:elkou141061 <at> hotmail.com] 
> Sent: 01 July 2004 20:46
> To: mpls-ops <at> mplsrc.com
> Subject: [MPLS-OPS]: Cisco- Queing Algorithm 
> 
> 
> 
> Found the following in CSCO doc :
> 
> quote
> 
> Queing Algorithm are activated only when a device is experiencing 
> congestion,and in most cases are deactvated only when 
> congestion clears.
> 
> Unquote
> 
> Q1- What is the definition of "congestion" . ie: when the box 
> will consider 
> the link is congested ??.
> Q2- Not clear this "on" "off" behaviour . my understanding 
> that the queing 
> is done in hardware and
>       should be always "on" irespective of the link congestion .
> 
> Appreciate to explain .
> 
> Brgds
> 
> _________________________________________________________________
> STOP MORE SPAM with the new MSN 8 and get 2 months FREE* 
> http://join.msn.com/?page=features/junkmail
> 
> -------
> The MPLS-OPS Mailing List
> Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
> Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
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Gmane