VLSM - Variable-length subnet mask. The ability to specify a different subnet
mask
for the same network number on different subnets. VLSM can help optimize
available
address space.
Route Summarization - The consolidation of advertised addresses in OSPF and
IS-IS.
In OSPF, this causes a single summary route to be advertised to other areas by
an
ABR (Area Border Router).
CIDR - Classless Interdomain Routing. A technique supported by BGP4 and
based on Route Agrregation. CIDR allows routers to group routes together in
order to cut down on the quantity of routing information carried by core
routers.
With CIDR, several IP networks appear to networks outside the group as a
single, larger entity.
These are all have to deal with scalability, addressing the various networks.
Jeffry Jacob wrote:
> hi
> could someone tell me what is vlsm , route summarization and cidr
> maybe its the lack of grey matter in my head but cant seem to make out the
> diff btwn cidr and summarization
>
> thanx in advace..
>
> jeff
>
> **NOTE: New CCNA/CCDA List has been formed. For more information go to
> http://www.groupstudy.com/list/Associates.html
> _________________________________
> UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
> FAQ, list archives, and subscription info: http://www.groupstudy.com
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
**NOTE: New CCNA/CCDA List has been formed. For more information go to
http://www.groupstudy.com/list/Associates.html
_________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
