... link.
Implementing Link-State
Routing
Advantages of a Link-State Routing Protocol
Requirements of a Link-State Routing Protocol
Comparison of Link-State Routing Protocol
Note: Chapter 11 discusses ... routing issues within an area.
Multi-area OSPF and IS-IS are discussed further in CCNP.
Link-State Routing
Link-State Routing Protocols
Introduction...
...
follows:
–The router sends and receives routing messages on its interfaces.
–
The router shares routing messages and routing information with other routers that
are using the same routing protocol.
–Routers ... Public
http://www.cisco.com/en/US/products/ps5763/products_configuration_guide _chapter0 9186a00802a1fae.html#wp1045020
RIB:
Classifying Routing Protocols
Dynam...
... s0/0/0
VLSM
VLSM in Action
VLSM and IP Addresses
Chapter 6 VLSM and CIDR
Routing Protocols and Concepts
17
Classless Routing Protocol
Classless routing protocols include the subnet mask with ... assigned
an IP address and
mask from a
specific subnet.
10. 2.1.55/24
10. 2.5.55/24
10. 4.0.55/20
25
VLSM: A different way to look at it
For subnet 10. 1.0.0/16...
... command is used to display the routing table.
l Initially, the routing table is empty if no interfaces have been
configured.
l Note: Static routes and dynamic routes cannot be added to the
routing ... Added to the Routing Table
l The debug ip routing displays routing table processes for any
route,
Ÿ directly connected network
Ÿ static route
Ÿ dynamic route.
l Disable debug ip...
... with
IP and TTL
Distance Vector Routing Protocols
Today
RIP
EIGRP
27
Next Exchange of Routing Information
R2:
Sends an update about networks 10. 3.0.0 with a metric of 1 and
10. 4.0.0 ... Exchange of Routing
Information
Routing Table Maintenance
Periodic Updates
Bounded Updates
Triggered Updates
Random Jitter
Routing Loops
Defining a Routing Loop...
... http://www.ietf.org/rfc/rfc1058.txt
RIPv1: A Distance Vector,
Classful Routing Protocol
Background and Perspective
RIPv1 Characteristics and Message Format
RIP Operation
5
Background and Perspective
...
in RIPv1
6
Background and
Perspective
Charles Hedrick wrote RFC 105 8 in 1988, in which he documented
the existing protocol and specified some improvements.
RFC 1...
... RIPv2
Enabling and Verifying RIPv2
Auto-Summary and RIPv2
Disabling Auto-Summary in
RIPv2
Verifying RIPv2 Updates
VLSM and CIDR
RIPv2 and VLSM
RIPv2 and CIDR
Verifying and Troubleshooting ... following features and limitations:
Use of hold-down and other timers to help prevent routing loops
Use of split horizon and split horizon with poison reverse to...
... destination IP address of a packet
and a route in the routing table, a minimum number of leftmost bits
must match between the IP address of the packet and the route in the
routing table.
The subnet ... parent route
9
Sample Routing Table Entries
The routing table hierarchy in Cisco IOS software was originally
implemented with the classful routing scheme.
Although the r...