CEF DISABLE ON MPLS VPN

kunju mon

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Jul 22, 2010, 4:20:32 AM7/22/10

to CCIE SP

what will happen if we disable cef on interfaces connecting P----P
router .Will interface cef is required only for ingress interface from
PE-CE..??

Prakash Kalsaria

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Jul 22, 2010, 4:24:42 AM7/22/10

to CCIE SP

I Think You Require CEF enable ON all MPLS router

kunju mon

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Jul 22, 2010, 4:26:35 AM7/22/10

to CCIE SP

CEF IS ENABLED GLOBALLY ON ALLL.IF its DISABLED ON ONE P---P
INTERFACE ,WHAT WOULD HAPPEN.:)

On Jul 22, 12:24 pm, Prakash Kalsaria <kalsaria.prak...@gmail.com>
wrote:

Harish Nair

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Jul 22, 2010, 4:30:51 AM7/22/10

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if it is a normal Pe to CE.. nothing is goin to happen.. if we have vrf lite.. and extended to CE. then we need to have cef enabled in ce

Harish

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akyccie

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Jul 22, 2010, 5:50:50 AM7/22/10

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I guess CEF is must for MPLS on all PE/P router

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Harish Nair

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Jul 22, 2010, 5:52:12 AM7/22/10

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surely.. for all PE and P's but not mandatory for PE to CE untill unless we have vrf lite

Prakash Kalsaria

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Jul 22, 2010, 5:54:18 AM7/22/10

to CCIE SP

so if we have VRF LITE between PE-CE
than we don't require CEF

if don't enable a CEF it will work

On Jul 22, 2:52 pm, Harish Nair <haris...@gmail.com> wrote:
> surely.. for all PE and P's but not mandatory for PE to CE untill unless we
> have vrf lite
>
>
>
>
>
> On Thu, Jul 22, 2010 at 3:20 PM, akyccie <akyc...@gmail.com> wrote:
> > I guess CEF is must for MPLS on all PE/P router
>
> > -----Original Message-----
> > From: ccie-s...@googlegroups.com [mailto:ccie-s...@googlegroups.com]
> > On Behalf Of kunju mon
> > Sent: Thursday, July 22, 2010 1:51 PM
> > To: CCIE SP
> > Subject: CEF DISABLE ON MPLS VPN
>
> > what will happen if we disable cef on interfaces connecting P----P
> > router .Will interface cef is required only for ingress interface from
> > PE-CE..??
>
> > --
> > You received this message because you are subscribed to the Google
> > Groups "CCIE SP" group.
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> > For more options, visit this group at
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> >http://prakashkalsaria.wordpress.com
>
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Harish Nair

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Jul 22, 2010, 5:55:34 AM7/22/10

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wat i was trying to say is CEF in CE is mandate if we have vrf lite..

akyccie

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Jul 22, 2010, 5:57:43 AM7/22/10

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CE router you are not running MPLS. CEF is must wherever you wanted to run MPLS. Right, VRF lite also needs CEF to be enabled

Maulik Parekh

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Aug 27, 2010, 2:01:23 AM8/27/10

to CCIE SP

Yes, if CEF is disabled LDP neighbors would come down & hence all the
services running over it !!

For VRF-Lite CEF is required cos the routes received by router have to
be transferred to the VRF Routing table.

Now VRF can only be created if you have CEF enabled !!

Just boot a router with CEF disabled and VRF configured & look at the
POP up messsage !!

HTH
Maulik

On Jul 22, 2:57 pm, "akyccie" <akyc...@gmail.com> wrote:
> CE router you are not running MPLS. CEF is must wherever you wanted to run
> MPLS. Right, VRF lite also needs CEF to be enabled
>
> From: ccie-s...@googlegroups.com [mailto:ccie-s...@googlegroups.com]
> On Behalf Of Harish Nair
> Sent: Thursday, July 22, 2010 3:22 PM
> To: ccie-s...@googlegroups.com
> Subject: Re: CEF DISABLE ON MPLS VPN
>
> surely.. for all PE and P's but not mandatory for PE to CE untill unless we
> have vrf lite
>

> On Thu, Jul 22, 2010 at 3:20 PM, akyccie <akyc...@gmail.com> wrote:
>
> I guess CEF is must for MPLS on all PE/P router
>
> -----Original Message-----
> From: ccie-s...@googlegroups.com [mailto:ccie-s...@googlegroups.com]
>
> On Behalf Of kunju mon
> Sent: Thursday, July 22, 2010 1:51 PM
> To: CCIE SP
> Subject: CEF DISABLE ON MPLS VPN
>
> what will happen if we disable cef on interfaces connecting P----P
> router .Will interface cef is required only for ingress interface from
> PE-CE..??
>
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> You received this message because you are subscribed to the Google
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> For more options, visit this group athttp://groups.google.co.in/group/ccie-sp-cert?hl=en?hl=en-GBhttp://prakashkalsaria.wordpress.com<http://prakashkalsaria.wordpress.com/>

>
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