From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Fri Dec 07 2007 - 16:29:03 ART
Rhino packets are much worse :)
----- Original Message -----
From: "Scott Morris" <swm@emanon.com>
To: "'joshua lauer'" <jslauer@hotmail.com>; "'Scott Vermillion'"
<scott_ccie_list@it-ag.com>; "'Jian Gu'" <guxiaojian@gmail.com>; "'Gary
Duncanson'" <gary.duncanson@googlemail.com>
Cc: "'Darren Johnson'" <dazza_johnson@yahoo.co.uk>; <ccielab@groupstudy.com>
Sent: Friday, December 07, 2007 2:26 PM
Subject: RE: [SPAM]Re: I know this CCIE who wouldn't know a packet if it hit
him in the ass! ~CCIE Intervie
> You could always look at the interviewer and exclaim "Ten minutes to Judge
> Wapner". :)
>
> I bet you'd know if a jumbo packet hit you in the ass.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> joshua lauer
> Sent: Friday, December 07, 2007 9:08 AM
> To: Scott Vermillion; 'Jian Gu'; 'Gary Duncanson'
> Cc: 'Darren Johnson'; ccielab@groupstudy.com
> Subject: RE: [SPAM]Re: I know this CCIE who wouldn't know a packet if it
> hit
> him in the ass! ~CCIE Intervie
>
> I'm not sure if I would know if a packet hit me in the ass. I'm not sure I
> would want to either...what exactly does a "packet hitting me in the ass"
> entail?
>
> I know many CCIE's who have "lost the edge" but is being an encyclopedia
> of
> knowledge necessary to the job? the interview should be tailored for the
> job
> being hired for, not to see if the person is rainman.
>
>
>
>> From: scott_ccie_list@it-ag.com
>> To: guxiaojian@gmail.com; gary.duncanson@googlemail.com
>> CC: dazza_johnson@yahoo.co.uk; ccielab@groupstudy.com
>> Subject: RE: [SPAM]Re: I know this CCIE who wouldn't know a packet if
>> it
> hit him in the ass! ~CCIE Interview Qs~
>> Date: Thu, 6 Dec 2007 14:41:28 -0700
>>
>> Hey all,
>>
>> Certainly it's great to know what the process would be sans CEF/MLS,
>> but in modern switching architectures, we aren't actually doing these
>> lookups
> based
>> on flows or packet/frame arrival, right? My studies of CEF for the
>> written caused me to look a little more deeply into this than I ever
>> had
> previously.
>> What I recall (and what Joe's article seems to confirm) is that
>> information populated into the RIB gets translated into a FIB by CEF.
>> Then the adjacency table actually caches the full L2 header for each
>> and every entry in the FIB.
>>
>> So before the first flow ever takes place, we've already
>> pre-calculated not only the outgoing interface for every L3
>> destination, we've also cached the outbound L2 header. This all gets
>> pushed down to ASICs that essentially match on bit patterns. In other
>> words, both L2 and L3 are switched down in hardware and all of this is
>> set up at system boot time. Then the RP simply pushes changes in the RIB
> over to CEF, which maintains the FIB.
>>
>> Now where I get a bit fuzzy is how QoS policy and that sort of thing
>> gets inserted into the mix. I'm not a chip designer and I don't aspire
>> to
> be.
>> I'm willing to take some things on faith, and this is probably one
>> such thing.
>>
>> And I understand you too Darren! A host or another router viewing the
> local
>> box in question as the next hop would perform L2 encapsulation with
>> the destination MAC set to that of this local box. But I still think
>> that, due to CEF, in such a case we're still just dealing with a L3
>> switching operation vs. a L2 switching operation.
>>
>> Right?
>>
>> Scott
>>
>>
>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
>> Of
> Jian
>> Gu
>> Sent: Thursday, December 06, 2007 2:12 PM
>> To: Gary Duncanson
>> Cc: Darren Johnson; ccielab@groupstudy.com
>> Subject: Re: [SPAM]Re: I know this CCIE who wouldn't know a packet if
>> it
> hit
>> him in the ass! ~CCIE Interview Qs~
>>
>> Assuming MACs are leaned and ARPs are all resolved.
>>
>> When a frame comes in, router/switch will do both L2 and L3 lookup at
>> the same time, and combine the result to make the final decision. If
> destination
>> MAC is router, then L2 lookup will not yield something meaningful,
>> L3 lookup will come out with MAC re-write information for nexthop for
>> destination IP, frame will then be routed. If destination MAC is not
> router,
>> this MAC must be in the vlan's dynamic MAC table, in this case, L2
>> lookup will yield outgoing port, L3 lookup better come with the same
>> result, this frame will be L2 switched.
>>
>> Jian
>>
>> On Dec 6, 2007 12:40 PM, Gary Duncanson
>> <gary.duncanson@googlemail.com>
>> wrote:
>>
>> > Daz,
>> >
>> > Yeah. Well it's getting later here in GB.
>> >
>> > Packet comes in..
>> >
>> > If the destination MAC address is that of the L3 switch, then it
>> > knows about it, doesn't it just switch it out the right interface?
>> >
>> > If unknown..what about ARP or routing?
>> >
>> > Im sure you know what you mean :-)
>> >
>> > Gaz
>> > ----- Original Message -----
>> > From: "Darren Johnson" <dazza_johnson@yahoo.co.uk>
>> > To: "'Gary Duncanson'" <gary.duncanson@googlemail.com>
>> > Cc: <ccielab@groupstudy.com>
>> > Sent: Thursday, December 06, 2007 8:33 PM
>> > Subject: RE: [SPAM]Re: I know this CCIE who wouldn't know a packet
>> > if it hit him in the ass! ~CCIE Interview Qs~
>> >
>> >
>> > > Hey Gaz, starting to like our late night chats ;-)
>> > >
>> > > My point was that if the destination MAC address is that of the L3
>> > switch,
>> > > it is to be routed. If it isn't and the receiving interface is L2
>> > > then
>> > it
>> > > is
>> > > switched/bridged.
>> > >
>> > > Hmmm, not sure if Im making myself clear. I know what I mean......
>> > > :-)
>> > >
>> > > Daz
>> > >
>> > > -----Original Message-----
>> > > From: Gary Duncanson [mailto:gary.duncanson@googlemail.com]
>> > > Sent: 06 December 2007 19:50
>> > > To: Darren Johnson
>> > > Cc: ccielab@groupstudy.com
>> > > Subject: [SPAM]Re: I know this CCIE who wouldn't know a packet if
>> > > it
> hit
>> > > him
>> > > in the ass! ~CCIE Interview Qs~
>> > >
>> > > Would that not be destination MAC known by the L3 switch
>> > > (switched) as opposed to unknown (routed)?
>> > >
>> > > Is it not switched instead of bridged ;) What about those damn ASICs?
> I
>> > > have chatted offline with a guru who suspects CEF is the route of
>> > > the
>> > evil
>> > > these days (no pun intended) as opposed to the MLS-SE, MLS-RP,
>> > > MLSP
>> > stuff
>> > > and he may comment soon.
>> > >
>> > > You know who you are ;)
>> > > ----- Original Message -----
>> > > From: "Darren Johnson" <dazza_johnson@yahoo.co.uk>
>> > > To: "'Gary Duncanson'" <gary.duncanson@googlemail.com>; "'Jian Gu'"
>> > > <guxiaojian@gmail.com>
>> > > Cc: <ccielab@groupstudy.com>
>> > > Sent: Thursday, December 06, 2007 7:28 PM
>> > > Subject: RE: I know this CCIE who wouldn't know a packet if it hit
>> > > him
>> > in
>> > > the ass! ~CCIE Interview Qs~
>> > >
>> > >
>> > >> IMHO, if the destination MAC is owned by the L3 switch, then it
>> > >> needs
>> > to
>> > >> be
>> > >> routed. If the destination MAC is not owned by the L3 switch, it
>> > >> can either bridge it (if the device is located on another
>> > >> interface) or drop it
>> > (if
>> > >> the
>> > >> device is located on the same interface the frame was received on).
>> > >>
>> > >> Dazzler
>> > >>
>> > >> -----Original Message-----
>> > >> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
>> > >> Behalf
> Of
>> > >> Gary
>> > >> Duncanson
>> > >> Sent: 06 December 2007 17:51
>> > >> To: Jian Gu
>> > >> Cc: ccielab@groupstudy.com
>> > >> Subject: Re: I know this CCIE who wouldn't know a packet if it
>> > >> hit him
>> > in
>> > >> the ass! ~CCIE Interview Qs~
>> > >>
>> > >> Sounds like the route once switch many thing to me from MLS
>> > >> studies..
>> > >>
>> > >> Gary
>> > >> ----- Original Message -----
>> > >> From: "Jian Gu" <guxiaojian@gmail.com>
>> > >> To: "Sohail Nedaria" <sohail.nedaria@gmail.com>
>> > >> Cc: "ccie ccie" <cciefun@gmail.com>; "Narbik Kocharians"
>> > >> <narbikk@gmail.com>; "Cisco certification"
>> > >> <ccielab@groupstudy.com>
>> > >> Sent: Thursday, December 06, 2007 6:54 AM
>> > >> Subject: Re: I know this CCIE who wouldn't know a packet if it
>> > >> hit him
>> > in
>> > >> the ass! ~CCIE Interview Qs~
>> > >>
>> > >>
>> > >>> Sure, here is one I like,
>> > >>>
>> > >>> How does a L3 switch router know when to L2 switch an incoming
>> > >>> frame
>> > and
>> > >>> when to L3 switch an incoming frame?
>> > >>>
>> > >>> On Dec 5, 2007 10:00 PM, Sohail Nedaria
>> > >>> <sohail.nedaria@gmail.com>
>> > >>> wrote:
>> > >>>
>> > >>>> Hi Guys
>> > >>>>
>> > >>>> Can you guys provide me CCIE Interview questions
>> > >>>> so i
>> > can
>> > >>>> also prepare my self well before i take on any interview.
>> > >>>>
>> > >>>> Thanks
>> > >>>> Suhail
>> > >>>> CCIE#19337
>> > >>>>
>> > >>>>
>> > >>>> On 12/6/07, ccie ccie <cciefun@gmail.com> wrote:
>> > >>>> >
>> > >>>> > Hi,
>> > >>>> >
>> > >>>> > I am going off bit, but like to share something with you.
>> > >>>> >
>> > >>>> > I gave lots of interview include CISCO, Google, Yahoo......no
>> > >>>> > end
> &
>> > i
>> > >>>> gave
>> > >>>> > with out any interest to join but to test myself :). I gave
>> > >>>> > interview
>> > >>>> for
>> > >>>> > small to big organization & i found you can't impress the
>> > interviewer
>> > >>>> only
>> > >>>> > by your techniqual knowledge.
>> > >>>> >
>> > >>>> > Thing to impress them as per my understanding are as.
>> > >>>> >
>> > >>>> > 1. Good Techniqual Approach
>> > >>>> > 2. If you dont know say you dont know this time, but you will
> learn
>> > &
>> > >>>> find
>> > >>>> > the answer.
>> > >>>> > 3. Good troubleshooting approach (In network always answer
>> > >>>> > withh
>> > >>>> refrance
>> > >>>> > to
>> > >>>> > OSI layer)
>> > >>>> > 4. Listen interviewer carefully take own time to think &
>> > >>>> > answer 5. Never underestimate interviewer who knows what the
>> > >>>> > other side person is.
>> > >>>> > 6. Respect interviwer & appreciate him for some good question.
>> > >>>> > 7. Before go to the interview do your study about the
> oganization.
>> > >>>> > 8. Last be not least. Give an impression that you respect the
>> > >>>> organization
>> > >>>> > lot, you will love to work for them, you will give longer
>> > association
>> > >>>> > &
>> > >>>> > your
>> > >>>> > placement in organization will contributing lot to generate
>> > revenue.
>> > >>>> >
>> > >>>> > Dont forget final interview is always by the management people.
>> > >>>> >
>> > >>>> >
>> > >>>> > Regards,
>> > >>>> > Mike
>> > >>>> >
>> > >>>> >
>> > >>>> >
>> > >>>> > On 12/6/07, Narbik Kocharians <narbikk@gmail.com> wrote:
>> > >>>> > >
>> > >>>> > > Darth, Are you a CCIE? I don't see your number. But what
>> > >>>> > > would
>> > you
>> > >>>> hate
>> > >>>> > to
>> > >>>> > > be asked in the interview? that's the question i would ask.
>> > >>>> > > I would ask him/her what are your weak points and what are
>> > >>>> > > your strong points. Go from there.
>> > >>>> > > Talk to him/her about some of the problems that your firm
>> > >>>> > > had
> and
>> > >>>> > > see
>> > >>>> > > what the person responds, but don't expect the poor CCIE to
> solve
>> > >>>> > > it
>> > >>>> for
>> > >>>> > > you
>> > >>>> > > in a second. But he/she should have an idea as to where to
>> > >>>> > > look, from
>> > >>>> > that
>> > >>>> > > you should know the depth of his/her knowledge.
>> > >>>> > > If you or the interviewer is experienced enough, the second
>> > >>>> > > this
>> > >>>> person
>> > >>>> > > opens his/her mouth, you should know the depth of his
> knowledge.
>> > >>>> > >
>> > >>>> > > But once again, CCIEs are not gods, they can have a bad day
>> > >>>> > > as well.
>> > >>>> > > I
>> > >>>> > > personally like to focus on the person's attitude and
>> > personality,
>> > >>>> > > obviously
>> > >>>> > > he/she got the CCIE cert, which means that the person
>> > >>>> > > either
>> > knows
>> > >>>> > > or
>> > >>>> > knew
>> > >>>> > > the stuff and can easily pick up the info.
>> > >>>> > >
>> > >>>> > >
>> > >>>> > > My 2 Cent.
>> > >>>> > >
>> > >>>> > > On 12/5/07, darth router <darklordrouter@gmail.com> wrote:
>> > >>>> > > >
>> > >>>> > > > Ok guys,
>> > >>>> > > >
>> > >>>> > > > there was a thread a while back talking about dumbass
>> > >>>> > > > CCIE's.
>> > As
>> > >>>> > > > I
>> > >>>> > > prefer
>> > >>>> > > > not to be the dumbest CCIE on the planet, help me out
>> > >>>> > > > with questions
>> > >>>> > > that
>> > >>>> > > > you might ask a CCIE candidate in an interview. I have
>> > >>>> > > > had
> some
>> > >>>> brutal
>> > >>>> > > > interviews since I became IE. Honestly the questions seem
>> > >>>> > > > a
> bit
>> > >>>> basic
>> > >>>> > so
>> > >>>> > > > far, but I have had some really in depth questions about
>> > >>>> > spanning-tree,
>> > >>>> > > > troubleshootin real world EIGRP scenarios, etc.. that
>> > >>>> > > > really caught
>> > >>>> me
>> > >>>> > > off
>> > >>>> > > > guard. It's not that I could not have solved these
>> > >>>> > > > issues, had
>> > I
>> > >>>> been
>> > >>>> > > > there
>> > >>>> > > > logged into the routers, its explaining things we take
>> > >>>> > > > for granted
>> > >>>> can
>> > >>>> > > be
>> > >>>> > > > tough, especially in interviews. It seems like a lot of
>> > >>>> > > > people are amazed that a CCIE couldn't answer this or
>> > >>>> > > > that question.
>> > >>>> > > > Personally, I am trying to come up with a knowledge
> maintanance
>> > >>>> plan,
>> > >>>> > > > like reading a chapter in the exam cert guide every week.
>> > >>>> > > > The tasks
>> > >>>> I
>> > >>>> > > > do not do on a daily basis fade quickly.
>> > >>>> > > >
>> > >>>> > > >
>> > >>>> > > > I have of late been going way back to basics, reading up
>> > >>>> > > > on TCP/IP
>> > >>>> > > flows,
>> > >>>> > > > Ethernet, ARP, looking at packet sniffing traces, etc..
> Someone
>> > >>>> > > > made
>> > >>>> > > > mention
>> > >>>> > > > of the CAM table populating entries, so I read up on that
> too.
>> > >>>> > > >
>> > >>>> > > > I certainly don't know everything, but I would love to.
>> > >>>> > > > Care
> to
>> > >>>> > > > give
>> > >>>> > me
>> > >>>> > > > some
>> > >>>> > > > example questions you might ask a CCIE in an interview,
>> > >>>> > > > or
>> > >>>> > technologies
>> > >>>> > > > you
>> > >>>> > > > would expect to have him/her to have down pat?
>> > >>>> > > >
>> > >>>> > > > DR
>> > >>>> > > >
>> > >>>> > > >
>> > >>>> >
>> > > __________________________________________________________________
>> > > _____
>> > >>>> > > > Subscription information may be found at:
>> > >>>> > > > http://www.groupstudy.com/list/CCIELab.html
>> > >>>> > > >
>> > >>>> > >
>> > >>>> > >
>> > >>>> > >
>> > >>>> > > --
>> > >>>> > > Narbik Kocharians
>> > >>>> > > CCIE# 12410 (R&S, SP, Security) CCSI# 30832
>> > >>>> > > www.MicronicsTraining.com Sr. Technical Instructor
>> > >>>> > > www.Net-WorkBooks.com
>> > >>>> > >
>> > >>>> > >
>> > >>>>
>> > ____________________________________________________________________
>> > ___
>> > >>>> > > Subscription information may be found at:
>> > >>>> > > http://www.groupstudy.com/list/CCIELab.html
>> > >>>> >
>> > >>>> >
>> > > __________________________________________________________________
>> > > _____
>> > >>>> > Subscription information may be found at:
>> > >>>> > http://www.groupstudy.com/list/CCIELab.html
>> > >>>> >
>> > >>>>
>> > >>>>
>> > >>>>
>> > >>>> --
>> > >>>> Thanks And Regards
>> > >>>> Suhail.U.Nedaria
>> > >>>> 9833256425
>> > >>>> CCIE# 19337.
>> > >>>>
>> > >>>>
>> > ____________________________________________________________________
>> > ___
>> > >>>> Subscription information may be found at:
>> > >>>> http://www.groupstudy.com/list/CCIELab.html
>> > >>>
>> > >>>
>> > ____________________________________________________________________
>> > ___
>> > >>> Subscription information may be found at:
>> > >>> http://www.groupstudy.com/list/CCIELab.html
>> > >>
>> > >>
> _______________________________________________________________________
>> > >> Subscription information may be found at:
>> > >> http://www.groupstudy.com/list/CCIELab.html
>> > >>
>> > >>
>> > >>
>> > >> ___________________________________________________________
>> > >> Does your mail provider give you FREE antivirus protection?
>> > >> Get Yahoo! Mail http://uk.mail.yahoo.com
>> > >>
>> > >
>> > >
>> > >
>> > > ___________________________________________________________
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>>
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