Re: OEQ

isn't 20 just an example of an mtu value ? I mean 5*296 comes to 1480 so it
make kind of sence ?

good questions :-)

probably going to use them on the next job interview on the job candidate
just to scare them :-)

On Wed, May 13, 2009 at 2:49 PM, Santiago Enciso
<senciso_at_infocenter.com.py>wrote:

> From book ISBN: *1-58705-116-8*
>
>
>
> 1)
>
> *Supported** LMI Type*
>
> *DLCI***
>
> *Developing** Organization***
>
> Cisco
>
> 1023
>
> Gang of Four
>
> ANSI Annex D
>
> 0
>
> ANSI TI.617
>
> Q933A Annex A
>
> 0
>
> ITU-T (CCITT)
>
>
>
>
>
> 2)
>
>  The other issue is with the number of DLCIs that can be configured on a
> physical interface in the Cisco router. The LMI protocol specifies that all
> PVC status reports have to fit into a packet. How many of these can be
> squeezed into a packet depends on the maximum transmission unit (MTU) of
the
> physical interface. The formula for calculating the maximum number of DLCI
> per physical interface is (MTU 20)/5, where MTU is in bytes. The default
MTU
> size of an interface on a Cisco router is 1500 bytes; the interface can
have
> a maximum of 296 DLCIs.
>
> Dont know where the 20 comes from.. any idea?
>
>
>
> Santiago E
>
>
>
>
>
>
>
>
>
>
>
>
>
> Written by me, not breaking any NDA
>
>
>
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>
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>
>
> ------------------------------
>
> *De:* Rene [mailto:rene.klose_at_gmail.com]
> *Enviado el:* Miircoles, 13 de Mayo de 2009 17:31
>
> *Para:* Santiago Enciso
> *CC:* Cisco certification
> *Asunto:* Re: OEQ
>
>
>
> aren't dlci 0 for ANSI and ITU ?
>
> sure i don't rally get the 2 question do you mean how many dlci updates can
> be transported in a singel LMI message ?
>
>
> On Wed, May 13, 2009 at 2:15 PM, Santiago Enciso <
> senciso_at_infocenter.com.py> wrote:
>
>
>
> 1) What sort of information is suponed to be carried in DLCI 0 of
> frame relay?
>
> 2) How many DLCIs que be informed in a single LMI message in a cisco
> physical frame-relay interface?
>
>
>
>
>
>
>
> Santiago E
>
>
>
>
>
> Written by me, not breaking any NDA
>
>
>
>
>
>
> ------------------------------
>
> *De:* Rene [mailto:rene.klose_at_gmail.com]
> *Enviado el:* Miircoles, 13 de Mayo de 2009 16:53
> *Para:* Santiago Enciso
> *CC:* Cisco certification
> *Asunto:* Re: OEQ
>
>
>
> 2) addresses between 0x0180C2000000 to 0x0180C200000F
> (17 Multicast addresses of STP to be used by different bridge protocols)
> 1)
>
> Bit 2 is the protcol identifier and 3 is BPDU Type,
>
> http://www.protocols.com/pbook/bridge.htm
>
>
>
> On Wed, May 13, 2009 at 1:49 PM, Santiago Enciso <
> senciso_at_infocenter.com.py> wrote:
>
> 1) What does bit position 2 and 3 mean in a Spanning-Tree BPDU?
> 2) What is the multicast mac address used as destination address in
> traditional spannig tree bpdus?
>
>
>
>
>
> Santiago E
>
>
>
>
>
> Written by me, not breaking any NDA
>
>
> Blogs and organic groups at http://www.ccie.net
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>
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