Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Community Member

cidr , route summarisation and supernetting.

Can someone pls,explain these terms with examples cos i get a bit confused.

1 REPLY
Bronze

Re: cidr , route summarisation and supernetting.

CIDR:

it used the technique of variable-length subnet masking (VLSM) to allow allocation on arbitrary-length prefixes For example, in the CIDR address 206.13.01.48/25, the "/25" indicates the network portion remaining are host portion.

http://www.cisco.com/en/US/tech/tk365/tk107/tsd_technology_support_sub-protocol_home.html

Route summarization:

summarization allows routing protocols to advertise many networks as one address , reason is reduce the routing table entries.

http://www.cisco.com/en/US/docs/ios/11_3/np1/configuration/guide/1ceigrp.html#wp18604

Supernetting:

Combining several IP network addresses into one IP address. Supernetting reduces the number of entries in a routing table and is done in CIDR addressing as well as internal networks.

http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_9-1/ip_addresses.html

303
Views
0
Helpful
1
Replies
CreatePlease to create content