WAS: regex for as-path- now, lab conditions

From: ccie2be (ccie2be@nyc.rr.com)
Date: Wed May 25 2005 - 14:28:28 GMT-3

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I'm just thinking out loud here but...

I wonder what Cisco would do if a candidate in Simon's situation asked for
another lab date instead of taking the lab without resources that Cisco has
promised and is suppose to provide.

I've heard of other times where the Doc-Cd wasn't available during some part
of the lab and I think it's very unfair to the candidate to have to deal
with this situation as best as he or she can.

At $1250 a pop, I think Cisco has a profound responsibility to live up to
and deliver on its promise. If, for whatever reason, Cisco is unable to
provide everything expected of it, it seems to me, Cisco should offer to
either refund the candidate's payment or provide a free retest.

Fundamentally, a situation where Cisco can't provide all it promised is no
different than if someone was to rent a hotel room without running water or
electricity. You could still stay there but it wouldn't be nice.

Just my 2 cents worth.

Tim

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
SIMON HART
Sent: Wednesday, May 25, 2005 10:13 AM
To: Dennis J. Hartmann; 'GroupStudy'
Subject: RE: regex for as-path

Dennis,

The rule as I understand is that you do have access to the DocCd. The case
is that on my lab attempt, for a good portion of the exam we did not have
access as the local web server was not working. The Proctor, give him is
due, was doing everything in his power to get it working, however in the
long run it did not add to what was already a stressful experience.

Simon

"Dennis J. Hartmann" <dennisjhartmann@hotmail.com> wrote:
If I don't have access to www.cisco.com/univercd during the lab, I think
I'm going to get up and leave. What's the rule? I know Cisco is making the
rules, but I believe you're supposed to be given that tool.

Sincerely,

Dennis J. Hartmann

White Pine Communications

dh8@pobox.com

CCSI#23402/CCIP/CCNP/CCDP/CCNA/CCDA

Cisco IP Voice Support & Design Specialist

Cisco Optical, VPN & IDS Specialist

MCSE

_____

From: SIMON HART [mailto:simon.hart@btinternet.com]
Sent: Wednesday, May 25, 2005 9:13 AM
To: Dennis J. Hartmann; 'GroupStudy'
Subject: Re: regex for as-path

Hi Dennis,

good shout, on this. In fact I stumbled over this recently within the
DocCd.

Just would not bet on having access to the DocCd when you do your lab. I
didn't !!

Simon

"Dennis J. Hartmann" wrote:

I created this E-Mail before stumbling across this quote in the BGP
Configuration Guide:

See the "Regular Expressions" appendix in the Cisco IOS Terminal Services
Configuration Guide for more information on forming regular expressions

Does anyone know if there is documentation on Regular Expressions
somewhere on the UNIVERCD site? Please disregard now that I know it's in
the termal services configuration guide.

I don't like to post to the list with just a question, so I'll share
some of my regular expression information below:

Matches any single character
* Matches zero or more sequences of the pattern
^ Begins with
$ End with
[5-9] or [56789] Matches one character in the range of 5 through 9
(123) Matches AS 123
+ Matches one or more sequences of the pattern
_ Matches the following: , { } ( ) ^ $ Blank Space

Examples

_200_ Matches an instance of AS 200 ANYWHERE in the AS-PATH

^200_ AS-Path begins with (originated from) AS 200

^200(_200)*$ Begins with and ends with (directly connected to) AS 200
with one (or more) instances of AS 200 due to AS-PATH prepending

200$ AS-PATH ends with AS 200 (AS 200 is the last AS that the BGP
path traversed).

^([0-9]+)(_\1)*$ Matches one or more instance of a neighboring AS. I
don't understand the (_\1) myself. If anyone has a better understanding of
this, please share.

* Permit ANY

\(200 Matches (200 which could be seen in a BGP Community's
AS-PATH. The \ matches any one special character. In this case, the
special character is the (.