RE: Frame-relay hub and spoke lab best practices.

From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Fri Sep 29 2006 - 22:29:27 ART


Comments inline:

Question:
Configure a frame-relay map to your own local interface ip and if so a
suggested dlci to pick?

Answer:
Doesn't matter.

Question:
Should you only do this when task calls for "make sure you can ping all
frame interfaces"?

Answer:
Yes.

Question:
Can you apply it anyway even if it doesn't call for so your tcl script
runs
uninterrupted?

Answer:
You should easily recognize that it's local when the ping fails.

Question:
If it doesn't should you remember to remove the self directed map?

Answer:
If you are going to remove it anyways then there isn't much use adding
it even for testing purposes.

Question:
Is it ever ok to duplicate broadcasts up towards the hub from a spoke?
Ie
spoke has 1 map to host and 1 map to other spoke on same dlci

Answer:
If they don't specify that it shouldn't be done then they don't care.
In the real world it's a best practice but the CCIE lab isn't about best
practices.

Question:
When to use broadcast keyword? Always unless told not to or Never unless
required later (ospf or mcast issues)

Answer:
Always unless otherwise told.

Question:
Link local and global unicast mapping or one over the other when to do
what
and which map would you enable multicast support with the broadcast
keyword?

Answer:
The best thing to do is to run a dynamic IPv6 routing protocol (OSPFv3,
RIPng, etc) and leave off the link local mapping to see what problems
you run into. As far as the broadcast keywork goes try it on the link
local and then the global mapping to see if you notice a difference.
You will remember better if you run into the problems yourself and
troubleshoot them ;-)

HTH,
 
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
 
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)

 
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Robert Watson
Sent: Friday, September 29, 2006 6:02 PM
To: ccielab@groupstudy.com
Subject: Frame-relay hub and spoke lab best practices.

I realize that most practice labs call for hub and spoke frame designs
in
their labs.

Is there a general consensus as to when to....

Configure a frame-relay map to your own local interface ip and if so a
suggested dlci to pick?

Should you only do this when task calls for "make sure you can ping all
frame interfaces"?

Can you apply it anyway even if it doesn't call for so your tcl script
runs
uninterrupted?

If it doesn't should you remember to remove the self directed map?

Is it ever ok to duplicate broadcasts up towards the hub from a spoke?
Ie
spoke has 1 map to host and 1 map to other spoke on same dlci

When to use broadcast keyword? Always unless told not to or Never unless
required later (ospf or mcast issues)

Link local and global unicast mapping or one over the other when to do
what
and which map would you enable multicast support with the broadcast
keyword?

Per cco it appears that you simply have to map the link local in frame
and
your show fram map will have an entry for both

All of these questions are so subjective that you can't really turn to
cco
for answers.



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