Re: Redist OSPF

From: Howard C. Berkowitz (hcb@gettcomm.com)
Date: Fri Mar 19 2004 - 22:43:45 GMT-3


At 4:46 PM -0800 3/19/04, Joseph D. Phillips wrote:
>I believe it's red ospf x in ex
>
>
>-----Original Message-----
>From: Richard Dumoulin [mailto:richard.dumoulin@vanco.es]
>Sent: Friday, March 19, 2004 16:41
>To: Packet Man; alsontra@hotmail.com; ccielab@groupstudy.com
>Subject: RE: Lab Tips - ISDN
>
>
>I have been spending two hours trying to figure out why my ospf external
>route was not getting redistributed into BGP.
>So TIP:
>
> By default, when redistributing ospf into BGP only internal ospf routes
>will go into BGP. Remember the external option !!
>
>--Richard

And it's wise to think of why you would HAVE to do this. Best Common
Practices, if not the Lab, avoids redistributing externals that an
IGP has learned, for loop prevention.

>
>-----Mensaje original-----
>De: Packet Man [mailto:ccie2b@hotmail.com]
>Enviado el: viernes, 19 de marzo de 2004 23:37
>Para: alsontra@hotmail.com; ccielab@groupstudy.com
>Asunto: Re: Lab Tips - ISDN
>
>
>Hey Alsontra,
>
>That's a GREAT tip. I wasn't even aware of those commands. sounds like
>they can be very useful. But, what the difference and benefit between using
>
>this method and using the old method (pinging the remote BRI interface)?
>
>
>>From: <alsontra@hotmail.com>
>>To: "Packet Man" <ccie2b@hotmail.com>,<ccielab@groupstudy.com>
>>Subject: Re: Lab Tips - ISDN
>>Date: Fri, 19 Mar 2004 16:19:41 -0800
>>
>>ISDN:TIP
>>
>>1.After making your initial ISDN configs, use the "isdn test call interface
>>bri (DN#)" command to verify that your interface working properly.
>> Also, use the "isdn test call disconnect interface bri all" instead of
>>"clear int bri 0/0". The latter command can cause problems with the isdn
>>switch that may cause you problem later on.
>>2. If your using dialer interfaces make sure to use either ppp or dialer
>>caller to identify the calling party(by name or number).
>>
>>Shootin from the hip here, so forgive the typos...
>>
>>Alsontra-
>>
>>
>>
>>----- Original Message -----
>>From: "Packet Man" <ccie2b@hotmail.com>
>>To: <ccielab@groupstudy.com>
>>Sent: Thursday, March 18, 2004 1:58 PM
>>Subject: Lab Tips
>>
>>
>> > Hi all,
>> >
>> > I've created a "Lab Tips" file of small items - factoids, reminders,
>> > suggestions, etc, I tend to forget. This is something I can refer to
>> > constantly when I'm doing practice labs or just have a few minutes to
>>spare.
>> >
>> > Here's a snippet from my Tips file.
>> >
>> > BGP
>> > Hard code router-id
>> > Don't use loopbacks for ibgp peering unless explicitly required
>> > Look for nei ... next-hop-self requirement especially on F/R hub and
>> > ethernets
>> > Disable bgp client to client reflection when clients are fully meshed
>> > Turn off auto-sum & sync unless explicitly required
>> > Reset BGP sessions using hard reset rather than soft reset.
>> > Know how to config nei xxxx local-as in combo with RR.
>> > Know all ways to config dampening
>> >
>> > I'm sharing this with GS because I suspect many candidates might also
>>have
>> > something like this. And, I thought that with all the great brain power
>> > among GS subscribers we could all help each other by adding tips to such
>
>>a
>> > file.
>> >
>> > Here's my definition of what makes for a good tip.
>> >
>> > 1) A tip may not in any way violate the NDA
>> > 2) A good tip should be something that might be easily forgotten
>>because
>> > it's not that often encountered or somehow different from the ordinary.
>>For
>> > example, when configuring ISIS over frame relay, don't forget to enter
>>the
>> > "fram map clns <dlci> broadcast" statement. For me, this is a good tip
>> > because I personally don't practice ISIS that often and I seem to almost
>> > always forget that command.
>> >
>> > 3) A good tip must be short and clear because the whole idea behind this
>> > file is to provide a quick reminder of various networking facts that can
>> > come in handy during the actual lab.
>> >
>> > 4) A good tip must should not waste time going into the "why" of the
>>fact
>>or
>> > all the various permutations. For that, anyone interested can research
> >the
>> > "why" of the fact on their own.
>> >
>> > 5) A good tip for one person might not be at all useful to someone else.
>>We
>> > each tend to remember and forget different things. But, for example,
>>over
>> > time the BGP tips section may include 30 items and while I doubt all 30
>> > items will be useful to all people, I'm sure that 5 or 10 or 15 of the
>>tips
>> > will be useful to many people - just that it won't be the same 5 or 10
>>or
>>15
>> > tips.
>> >
>> > 6) A good tip must be potentially relevant to a ccie R&S candidate.
>> > Therefore, I ask that Off Topic comments be submitted elsewhere - Let's
>>keep
>> > posts with the subject "Lab Tips" focus on just that.
>> >
>> > It's my hope that over time, with the input of a lots of people here,
>>this
>> > lab tips file will grow to include tips that cover every topic
>>potentially
>> > on the R&S lab exam. And, that as a result, we can each add the most
>> > personally valuable tips from this group effort to our own lab tips
>>file.
>> >
>> > Right now, my tips file has no entries for voice. So, I'd like to start
>>off
>> > by asking people to submit their voice config tips. Of course, tips on
>>any
>> > potential lab are also welcomed.
>> >
>> > Here are some other potential tips topics I hope people feel free to
>>submit
>> > tips to.
>> >
>> > Redistribution
>> >
>> > ATM
>> >
>> > 3550
>> >
>> > OSPF
>> >
>> > NAT
>> >
>> > HSRP
>> >
>> > F/R
>> >
>> > ISDN
>> >
>> > QOS
>> >
>> > Multicast
>> >
>> > NTP
>> >
>> > Voice
>> >
>> > Eigrp
>> >
>> > Please add your tip under the appropriate heading and send back to GS.
>> >
>> > Hope this helps lots of people.
>> >
>> > Packet Man
>> >
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>> >
>
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