route summarization 20.0.0.0/8 or /14?
James777
Member Posts: 20 ■□□□□□□□□□
in CCNA & CCENT
Hi all,
one of Chris Bryant's videos has the following route summarization example:
R2 has loopback21 (20.1.1.1/24) and loopback22 (20.2.1.1/24)
and RIP summarizes the two addrs as 20.0.0.0/8
video:https://www.udemy.com/ccna-on-demand-video-boot-camp/learn/v4/t/lecture/5816672?start=0but
But from my understanding, these 2 addrs should be summarized as 20.0.0.0/14, since from the binaries:
00010100.00000001.00000001.00000001 (20.1.1.1)
00010100.00000010.00000001.00000001 (20.2.1.1)
which one is correct?
Thanks in advance.
one of Chris Bryant's videos has the following route summarization example:
R2 has loopback21 (20.1.1.1/24) and loopback22 (20.2.1.1/24)
and RIP summarizes the two addrs as 20.0.0.0/8
video:https://www.udemy.com/ccna-on-demand-video-boot-camp/learn/v4/t/lecture/5816672?start=0but
But from my understanding, these 2 addrs should be summarized as 20.0.0.0/14, since from the binaries:
00010100.00000001.00000001.00000001 (20.1.1.1)
00010100.00000010.00000001.00000001 (20.2.1.1)
which one is correct?
Thanks in advance.
Comments
-
leonlimsg
Member Posts: 10 ■□□□□□□□□□
RIP is a classful routing protocol. It will summarize the address to its classful boundary.
RIPv2 can be classless but it is not enabled by default in Cisco routers. -
dppagc
Member Posts: 293
Use router rip, no auto-summary.
TS,
Class A will be summarised to /8, Class B /16, Class C /24 for classful routing protocol.
