Re: QS: FIB and RIB: what is the difference

Unbelievable!!!!

On Sat, Sep 26, 2009 at 12:57 AM, Johnny B CCIE <jbccie_at_gmail.com> wrote:

> Yes and he did not even include one of those signature lines to advertise
> his products like those other filthy vendors. That Narbik, he's scandalous.
> He's surely got some mal intentions. We need to keep an eye on that
> Armenian. The nerve of him making the other good guys look like they are
> only in it for the advertising. Some of them just seem to get paid to post
> replies and congratulations even.
>
> On Fri, Sep 25, 2009 at 5:25 PM, Ernest McCaleb <emccaleb_at_gmail.com>wrote:
>
>> How dare Narbik offer you any assistance! What a bogus unprofessional
>> and
>> underhanded way to promote his workbooks! My God, next thing you know one
>> of those guys from INE may chime in!!
>> :-)
>>
>> Ernest #21508
>>
>> On Fri, Sep 25, 2009 at 5:14 PM, Salah ElShekeil
>> <salah.elshekeil_at_gmail.com>wrote:
>>
>> > Hi Narbik,
>> >
>> >
>> >
>> > As usual great reply
>> >
>> >
>> >
>> > keep it up boss :)
>> >
>> >
>> >
>> > On Fri, Sep 25, 2009 at 10:01 PM, Tony Varriale
>> > <tvarriale_at_flamboyaninc.com>wrote:
>> >
>> > > It's actually very revelant as the info he is quoting is from systems
>> > > that's have the capability to download fib onto hardware/linecard.
>> > >
>> > > What you described is more of the foundation and is more accurate in a
>> > > base sense.
>> > >
>> > > You can't download fib to hardware that doesn't exist.
>> > >
>> > > Sent from my iPhone
>> > >
>> > > On Sep 25, 2009, at 12:30 PM, Narbik Kocharians <narbikk_at_gmail.com>
>> > > wrote:
>> > >
>> > > > When you look at RIB and FIB you have to think of the 2 major and
>> > > > most important components of routing:
>> > > >
>> > > > Control Plane
>> > > > Data Plane
>> > > > The control plane takes care of the routing information exchange,
>> > > > and in MPLS environment, label exchange between adjacent devices.
>> > > > What do we have and see in the control plane? Routing protocols,
>> > > > exchange of routing information, RIB (Routing Information Table) and
>> > > > once again in an MPLS environment you will also see a Label Exchange
>> > > > Protocol such as LDP.
>> > > >
>> > > > So therefore control plane builds a routing table or RIB based on
>> > > > the routing protocols.
>> > > > The control plane builds/populates 2 forwarding tables: a FIB (Which
>> > > > is built from the information in the RIB) and in MPLS networks an
>> > > > LFIB (Label Forwarding Information Base). These (FIB and LFIB) exist
>> > > > and work in the Data plane.
>> > > >
>> > > > The data Plane is simply a forwarding engine that is independent of
>> > > > the routing protocol or Label exchange protocol type; this Plane
>> > > > forwards packets to the appropriate interface based on the info
>> > > > found in the FIB or LFIB.
>> > > >
>> > > > So the way I envision it:
>> > > >
>> > > > You use a routing protocol to advertise routes upstreamb&b&and if
>> > > > any of the upstream routers need to connect to the advertised
>> networ
>> > > > ks, they connect downstream toward the destination.
>> > > >
>> > > > Now this is a very brief and basic explanation of the RIB, FIB and
>> > > > LFIB.
>> > > >
>> > > > Now weather they are hardware based or software based I think is
>> > > > irrelevant when you look at different platforms.
>> > > >
>> > > >
>> > > > On Fri, Sep 25, 2009 at 9:24 AM, Tony Varriale <
>> > > tvarriale_at_flamboyaninc.com
>> > > > > wrote:
>> > > > That's making a poor assumption that the device you are speaking
>> > > > about is
>> > > > hardware based.
>> > > >
>> > > > More than half of people won't come in contact with those devices
>> > > > (with the
>> > > > exception of a 6500).
>> > > >
>> > > > tv
>> > > >
>> > > > -----Original Message-----
>> > > > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On
>> Behalf
>> > > > Of
>> > > > Anthony Sequeira
>> > > > Sent: Friday, September 25, 2009 10:13 AM
>> > > > To: Syed Khalid Ali
>> > > > Cc: ccielab_at_groupstudy.com
>> > > > Subject: Re: QS: FIB and RIB: what is the difference
>> > > >
>> > > > The Routing Information Base is the copy of the routing table stored
>> > > > in software on the Cisco device.
>> > > >
>> > > > The Forwarding Information Base is the copy of the routing table
>> > > > stored in hardware on the Cisco device.
>> > > >
>> > > > Thanks to Cisco Express Forwarding (CEF) and its use of the FIB,
>> > > > performance for Cisco routers is much improved.
>> > > >
>> > > > Warmest Regards,
>> > > >
>> > > > Anthony J. Sequeira, CCIE #15626
>> > > > http://www.INE.com <http://www.ine.com/> <http://www.ine.com/> <
>> http://www.ine.com/>
>>
>> > > >
>> > > > Test your Core Knowledge today!
>> > > > Q: What protocol supports load-balancing with first-hop redundancy?
>> > > > A: gateway load balancing protocol
>> > > > More Info:
>> > > >
>> > >
>> > >
>> >
>> http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html
>> > > >
>> > > >
>> > > > On Sep 25, 2009, at 10:47 AM, Syed Khalid Ali wrote:
>> > > >
>> > > > > dear group,
>> > > > >
>> > > > > I just started to prepare for R&S track. While going through the
>> "ip
>> > > > > packet
>> > > > > debug command" these two terms just popped up.
>> > > > > What is the difference between these two?
>> > > > >
>> > > > > Thanks
>> > > > > Khalid
>> > > > >
>> > > > >
>> > > > >
>> > > > > _________________________________________________________________
>> > > > > Show them the way! Add maps and directions to your party invites.
>> > > > > http://www.microsoft.com/windows/windowslive/products/events.aspx
>> > > > >
>> > > > >
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>> > > >
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>> > >
>> > >
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>> > > >
>> > > >
>> > > >
>> > > >
>> > > >
>> > > >
>> > > >
>> > > >
>> > > > --
>> > > > Narbik Kocharians
>> > > > CCSI#30832, CCIE# 12410 (R&S, SP, Security)
>> > > > www.MicronicsTraining.com <http://www.micronicstraining.com/> <
>> http://www.micronicstraining.com/> <
>> > http://www.micronicstraining.com/>
>> > > > Sr. Technical Instructor
>> > >
>> > >
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>> >
>> > --
>> > Salah
>> > CCIE #24207
>> >
>> >
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>>
>>
>> --
>> Ernest McCaleb
>>
>>
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>

-- 
Salah
CCIE #24207
Blogs and organic groups at http://www.ccie.net