Re: Mpls vs mpls lite

Uh... actually not quite.
There are some terms overlappings.

1. VRF - virtual routing and forwarding instance is router virtualization
technique where we contain Routing and forwarding information to Instances,
and initially these instances cannot interact. Therefore a port in instance
1 cannot communicate to port in instance 2. Instance = VRF

2. MPLS we all should know what is.

3. MP-BGP in this context is used for creating and forwarding of VPNv4
addresses, which are created just for the purposes of connecting multiple
VRFs. This is used primarily so we do not care about overlapping address
space: all your customers may have 192.168.0.0/24 and you won't care.

So, when we use VRFs with MP-BGP and underlying MPLS, then it is called
"MPLS VPN"
When we use only VRF, without MPLS and/or MP-BGP, it is called VRF-LITE

VPNv4 of MP-BGP cannot function without MPLS. Base routing is still IP, not
VPNv4, therefore we need an overlaying technology.

On Thu, Apr 16, 2009 at 5:12 PM, Nadeem Ansari
<nadeem.ansari574_at_gmail.com>wrote:

> No You even dont have to enable MPLS to make it work, only VPNv4 sessions
> will be established between BGP peers to make protocol MP-BGP.
> MPLS VPN = VRF + MP-BGP + MPLS
>
> Regards
> Nadeem
>
> On Thu, Apr 16, 2009 at 8:35 PM, Akber Ali Mirza <akberali.cisco_at_gmail.com
> > wrote:
>
>> Nadeem/Pavel,
>>
>> Is that means VRF-Lite is equal to the MPLS VPN , as VRF & MP-BGP comes
>> into play in MPLS VPN.
>>
>> Thanks and Regards,
>> Akber Mirza.
>>
>> On Thu, Apr 16, 2009 at 8:27 PM, Nadeem Ansari <
>> nadeem.ansari574_at_gmail.com> wrote:
>>
>>> very simle and good explanation of VRF-Lite done by Pavel..
>>>
>>> VRF + MP-BGP(if BGP used in VRF) - MPLS = VRF-LITE
>>>
>>> Regards
>>> Nadeem
>>>
>>> On Thu, Apr 16, 2009 at 2:07 PM, Pavel Bykov <slidersv_at_gmail.com> wrote:
>>>
>>> > Uh.. I think you mean VRF-lite, not MPLS lite.
>>> >
>>> > Normally, you need MPLS for VPNs to communicate, with MP-BGP governing
>>> the
>>> > transmission and telling MPLS what it needs.
>>> >
>>> > But sometimes, you just need VPNs without MPLS and MP-BGP at all. Just
>>> > completely separate networks locally on a router. Then you would create
>>> > VRFs
>>> > with RDs, but without MPLS or RTs! So you have VRF, but only locally on
>>> a
>>> > router. This is called VRF-lite.
>>> >
>>> >
>>> >
>>> > On Thu, Apr 16, 2009 at 9:01 AM, <mark.chandra_at_gmail.com> wrote:
>>> >
>>> > > Guys,
>>> > >
>>> > > Anybody know a good source of technical document about the difference
>>> > > between mpls and mpls lite ?
>>> > >
>>> > > Thanks guys
>>> > >
>>> > > Regards
>>> > >
>>> > > Mark
>>> > > Sent from my BlackBerry. wireless device from XL GPRS/EDGE/3G network
>>> > >
>>> > >
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>>> > >
>>> >
>>> >
>>> > --
>>> > Pavel Bykov
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-- 
Pavel Bykov
----------------
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