ICND2, 1st Day

Routing
1. Routing Protocol
2. Destination Network ID
3. Exit Interface

Distance Vector
-RIP (120AD), 30s
Hop Count, Exchange Routing Table Periodic Update
-IGRP, 90s
**Rounting Loop (15 Hops MAX)
1. Split Horizon
2. Route Poisoning
3. Poison Reverse
4. Hold Down Timer
5. Triggered Updates

Link State
-OSPF (110AD)
Link State Advertisement (HELO Packet), Triggered Update
Topology Table, Forwarding Table, Adjacency Table
Details Route, Summarize Route
Summarization based on Area 0,1,2, and DEFAULT Subnet Mask
Localized Changes and Minimize Routing Update Traffic
Robust, Fast Convergence, Routers know the Topology
STRICT Network Design
**NOT PERIODIC UPDATE


Advance Distance Vector (Hybrid) *Cisco Only
-EIGRP (90AD), Triggered Update
Bandwidth(*), Delay(*), Loading(Change), Reliability(Change), MTU
Neighbor Table, Topology Table, Routing Table
Primary Route(Successor), Backup Route(Feasible Successor)
Unequal Path Cost Load Balancing * Only in EIGRP
Feasible Distance->My Path
Advertise Distance->Neighbor Path
Advertise Distance(Feasible Successor)Belief the low AD

AD(FS) <> enable
Router# config terminal
Router(config)# router eigrp 1
Router(config-router)# network 10.201.96.0 ?
A.B.C.D EIGRP wild card bits
Router(config-router)# network 10.201.96.0 0.0.15.255
Router(config-router)# no auto-summary
Router(config-router)# end
Router#show ip eigrp ?

No Auto Summary
Discontiguous Network
A discontiguous network is comprised of a major network separated by another major network.

8.0.1.1<-R1 8.0.1.6<-R2 No affected whether it is auto summarized->8.0.0.0
Because it is from same network.

10.1.2.1<-R1 10.1.1.1<-R3 Above are from 2 different network and being summarized->10.0.0.0

Router(config-router)# no auto-summary

Bandwidth and Delay can be set in the serial interface to
balance with Ethernet to show 2 successor. (Equal Path Cost)

1. conf t
2. router eigrp 88
3. variance [1-128]

Autonomous System
1. Interior Gateway (RIP, OSPF, EIGRP)
2. Exterior Gateway Protocol (BGP)
* The AS Number have to be same

FLSM (Fixed Length Subnet Mask)
- Classful Network
- Waste IPs
* RIPv1, IGRP Supported

VLSM (Variable Length Subnet Mask)
- Classless Network
- Save IP Address
- Based on the number of IPs Host
- Further Break Subnet
* Only EIGRP, OSPF, RIPv2 Supported

Bandwidth, Delay
1. conf t
2. bandwidth ?
3. delay ?

Router Summarization
192.168.5.33/32 Host
192.168.5.32/27 Subnet
192.168.5.0/24 Network
192.168.0.0/16 Block of Network
0.0.0.0/0 Default

Load Balancing Unequal Path Cost
EIGRP maximum metric variance = 1
defaults is ratio 1 to 1