Wednesday, April 9, 2014

E IGRP Routing and implementing basic EIGRP-(#5)

EIGRP ..Routing and implementing basic EIGRP-(#5)

Exercise #5 CBT nuggets, CCNP Route

For then latest CCNP route article go to https://ccnp300-101.blogspot.com

Paragraph #1

Configuration BB

Start , enable, conf t

IP asignation to each interface on R1

interface Loopback2
ip address 172.30.2.1 255.255.255.0
interface Loopback3
ip address 172.30.3.1 255.255.255.0
interface Loopback4
ip address 172.30.4.1 255.255.255.0
interface Loopback5
ip address 172.30.5.1 255.255.255.0
interface Loopback6
ip address 172.30.6.1 255.255.255.0
interface Loopback7
ip address 172.30.7.1 255.255.255.0
interface Loopback8
ip address 172.30.8.1 255.255.255.0
interface Loopback0
ip address 172.30.0.1 255.255.255.0
interface Loopback1
ip address 172.30.1.1 255.255.255.0
Interface Serial0/0
Description Connection al R2
Bandwidth 128
Ip address 10.1.24.1 255.255.255.252 ( el “252” viene del subneting del /30)
No shut

Interface Serial0/1
Description Connection al R3
Bandwidth 256
Ip address 10.1.34.1 255.255.255.252 ( el “252” viene del subneting del /30)
No shut

Exit, exit

Verificacion de IP y coneccion de interface R1

Show ip interface brief ( parte 7:00 del video)
Bb#conf t
BB(config)#router eigrp 90
BB(config-router) #network 172.30.0.0 0.0.255.255
No auto ( para que no halla auto-summary)

( explicacion: 172.30.0.0 es class B, y o.o.255.255 es el subnet mask…lo que estamos hacienda son 2 cosas: A)sending hellos a los ultimos 255.255 pues que sean cualquiera.. no nos importa..
B)Advertising to R2 y R3

We need to enable our SERIAL interfaces in R1

#BB(config-router)# crtl y “z”
#BB (config-router)#network 10.1.0.0 0.0.255.255
#BB (config-router)# network 192.168.1.0 ( no mencionado hasta el min. 20
No auto-summary
Ip default-network 192.168.1.0 ( to connect statically)
Ip route 192.168.1.0 255.255.255.0 null0
End

# show ip protocols

(Vemos que hay eigrp 90, y que esta routing estos networks: 10.1.0.0/16 y el default network 172.30.0.0 que no tiene /16)
________________________________________________________________________________

Configuracion del R2

Asignacion de IP a los interface

Enable Conf t, Hostname
Interface Serial0/0
Description Coneccion al BB
Bandwidth 128
Ip address 10.1.24.2 255.255.255.252
No shut

Interface f0/1
Description Conneccion al Switch1
Ip address 10.1.2.2 255.255.255.0
No shut
No auto-summary              (Nota: leer bien en la consola como esta escrito f 1/0, f 0/0, f 0/1)

Interface FastEthernet0/0
Description Conneccion al Switch2
Ip address 10.1.25.2 255.255.255.0
No shut

(Nota : 1.- ir al cuadrito de show interfaces en GNS3 que parece una paleta
            2.- despues vamos a darle un enable de eigrp)
R2#conf t
R2(config) #router eigrp 90
R2((config-router)#do show run int fa0/0             (para ver cual es el IP especifico del fa0/0)
network 10.1.2.2 0.0.0.0
network 10.1.24.2 0.0.0.0
network 10.1.25.2 0.0.0.0

no auto ( para que no halla auto-summary, se aplica no a los IP no a los network)

end

ctrl Z

#show IP route ( para aver las connecciones)
#Show ip eigrp neighbors ` ( par aver la situacion de la conneccion, hasta ahora solo BB)

Explicacion de terminos de show IP eigrp neighbors

H Handle:   The order that you have neighbors: 0 is the first neighbor
Holdtime: The order when you consider your neighbor dead ( never below 10 secs because it would               mean you missing hellos
SRTT : source round trip timer ( hopw long does it take to get it the re and back in MS
RTO : Retrasmited time out
Q:   How many packets are in queued waiting to be send, if there is anything above 0, means the is a problem with the bandwidth, , or a link problem
Seq Number : La version de la base de dato que esta corriendo

Configuracion del R3

Enable, conf t y hostname R3
Interface s0/0
Description coneccion al BB
Bandwidth 256
Ip address 10.1.34.2 255.255.255.252
No shut

Interface f0/0
Description Coneccion al SW1
Ip address 10.1.2.3 255.255.255.0
No shut

Router eigrp 90
Network 10.1.2.3 0.0.0.0
Network 10.1.34.2 0.0.0.0
No auto-summary
End

#do show ip int brief
#show ip eigrp neighbors

#show ip route

Vamos al BB and we checked that BB learned about the different routes:
BB#show ip routes
We can see that if connects to SW2 (10.1.25.0 and 10.1.2.0 using 10.1.34.0 because is the fastest bandwidth connection)
An important command: BB#show ip eigrp topology (17:49:mins.)
-It will show one successor : the less FD ( feasible distance) : 10.1.34.2

-It will show the slower : feasible successor, the back up

Second Paragraph

We verify the information’s in show IP routes in r2 if it’s receiving the static route of 192.168.1.0 of BB

The second paragraph explain the ip default-network for 192.168.1.0, , when it’s marked in BB with “*” means that it’s the candidate for statid route , but when you go to R2 it’s the designated static route.You can see that in #show ip routes

Third Paragraph

On R2 we need to id the interface, so we don’t want to say hello but advertise to other neighbors:
#show ip int brief ( we see it’s 10.1.25.2 = f0/1)
#router eigrp 90
#passive-interface default
No passive-interface s0/0
No passive-interface s0/1
No auto-summary
End

We confirm at “section” eigrp : r2#show run | s eigrp

Paragraph 4

From 0 till 7 are 8 numbers..
16 ( 15 numbers would be too much) 4 3 numbers would be too small
From 8   we go to 128,64,32,16, 8, 4,2 ,1…the 8 number would be the fifth in that order 128,192,224,240,248…   it means 248
             A.-in BB#router eigrp 90
BB#int s0/0
BB#(configif)#ip summary-address eigrp 90 172.30.0.0 255.255.248.0

            B.-Now go to R2
R2(config-router)#do show ip route
It’s different because it got ( /21) , that mean 8+8+5.. Belove it’s where he is learning the route 10.1.2.0, it says serial and got the double of F.D.

           C.-We found out that we need to configure in BOTH SERIAL interfaces of BB
BB(config-if)#int s0/1
BB(config-if)#ip)#ip summary-address eigrp 90 172.30.0.0 255.255.248.0

D.-Them we go to R2 and check on R2#show IP route and them R3

Paragraph 5

In BB#show ip eigrp topology We see that 10.1.34.2 is faster that 10.1.24.2

BB#(config)router eigrp 90
BB( config-router)variance2
Crtl –z
BB#show IP eigrp topoly
Now you will see two path using A.S. 90 to 10.1.2.0

Saturday, March 1, 2014

CCNP Route Labs, Routing and implementing EIGRP

EIGRP ..Routing and implementing basic EIGRP-(#5)

Exercise #5 CBT nuggets, CCNP Route

https://ccnp300-101.blogspot.com For the latest article go to

Paragraph #1

Configuration BB

Start , enable, conf t

IP asignation to each interface on R1

Verificacion de IP y coneccion de interface R1

We need to enable our SERIAL interfaces in R1

Configuracion del R2

Asignacion de IP a los interface

no auto ( para que no halla auto-summary, se aplica no a los IP no a los network)

end

ctrl Z

#show IP route ( para aver las connecciones)
#Show ip eigrp neighbors ` ( par aver la situacion de la conneccion, hasta ahora solo BB)

Explicacion de terminos de show IP eigrp neighbors

Configuracion del R3

#show ip route

-It will show the slower : feasible successor, the back up

Second Paragraph

We verify the information’s in show IP routes in r2 if it’s receiving the static route of 192.168.1.0 of BB

Third Paragraph

We confirm at “section” eigrp : r2#show run | s eigrp

Paragraph 4

D.-Them we go to R2 and check on R2#show IP route and them R3

Paragraph 5

CCNP Route Labs.Routing and implementing basic EIGRP-(#4)

Cisco. Lab 18 of CBT Nuggets .CCNP Route‎ > ‎

EIGRP ..Routing and implementing basic EIGRP-(#4)

Charter 4

For the latest article go to https://ccnp300-101.blogspot.com

EIGRP Routing Concepts and planning

·         -- Why would you choose EIGRP
·          -- EIGRP table and terminology
·         -- Visiting the friendly EIGRP neighbor
·         -- Visiting the no so friendly EIGRP metric calculation ( the K valuation)

EIGRP is the best protocol and why you would use it?     It’s the fastest to converge, and the easiest to configure.
1.- Back Route : ( Fast Converge/ Dual) : Primary route and Backup Route ( Feasible Successor)

If system goes down there is no recalculation, it keeps the backup route on topology table 2.-Simple configuration
3.-Flexibility
4.-Unequal cost-load balancing.. No other protocol do tah..

5.-Combine the best of distance vector (very fast to converge like rip) and link state

A router running EIGRP runs 3 tables: neighbor, topology and routing table

· Neighbor Table: A list of all neighbor that it has directly connected

· Topology table: List the best router ( successor route) , and the second best route ( Feasible route) , a back up. It will automatically switch if primary fails.

· Routing table: Every router maintain it’s the best route, that router knows about

EIGRP Table and terminology

A)Feasible distance (FD)How far is four you to get to a specific route
Feasible Distance : The cost of fort R1 to get to 10.1.2.0/24 network is 110
B)Advertise Distance: ( AD) : How far is going to be to get to your neighbor
· Succesor: Primary
· Feasible Succesor: Backup
Active Route : Bad one.. stop, witing to be connected
Pasive route: good one

Visiting the no so friendly EIGRP metric calculation ( The K valuation)

MTU is NOT a part of the bandwidth calculation: it’s a maximum trasmition unit.. ( How big a packet can be send on a link).
It’s not a factor in the formula to calculate the best way of EIGRP to get to the network

Email

CCNP Route labs.OSPF Foundation

OSPF routing foundation 1

Labels

--The first of-link state routing protocol – OSPF concept
--OSPF area design and terminology
--OSPF neighbor relationship

There are 2 link state protocol: IsIs and OSPF
It maintains 3 tables:

Neigbor table
Topology table
Routing Table

--Use Dijkstra’s Shortest Path First algorithm (SPF)
--Send triggered updates to announce network change.
--Send periodic Update on long intervals ( LS Refresh) .Link State is not sending update every 30 second like EIGRP , but send updates when there is any changes.. ( after a long interval, a router running OSPF could send the whole routing table map every 30 minutes, to make sure every router is on the same “page”).

Link state not only knows the other routers but all the road map of the entire area… That’s the biggest difference with the other type of routing..
The biggest disadvantage of lnik state is that they could be very processor intense..Distance vector only knows what the neighbor knows.
--Neighbor table:it will track all the neighbor and exchange routes with that are running ospf or isis protocol
--Topology table: (the biggest difference with link state routing protocol):Every router has a topology table that is basically a road map of every network in the area and all possible paths to get there..It’s not a route map, it’s what the neighbor has pass on.That’s why Distance vector has always been consider Routing By Rumor.
Link State knows the whole map of the entire area.Distance vector only knows the best path from the neighbor. That’s why EIGRP is more processor efficient.

Area Border Router: (ABR) Between two area . One of the router MUST be in Area “0”.All AREAS must be connected to area “0”
The point of this design is to optimize the local updates within the area.Localize updates within the specific area.
Requires hierarquical design: Different numbers of networks per area so we can do summarization
Autonomous system Boundaries Router (ASBR): The router to connect outside of your autonomus system

Understanding OSPF Neighbor relationship

Thed (ABR) and (ASBR) are the only routers that can do summarization. You can have 50 routers but they are the only one capable of doing so.

As you can see in the graphic, they have 3 different networks.
--The Router ID here will be 192.168.1.1 ( the highest active interface). If you got Loopbacks it will automatically become the router ID
The OSPF Router ID only changes when the OSPF restart or you reboot the router
It doesn’t change automatically and not often. It wait till router reboots ( maybe 8 years ) or it clean the ospf process and reset the process..
If the router ID change .. there could be problems ..very dangerous…them the ospf reboots and ospf fails between the 2 routers.
To add a interface could be dangerous because you forgort 10 years ago that you added when you reboot the router.

1.- The router –ID could be hard coded using the router –ID command
It means you could have hierarquical, them physical interfaces ( loopbacks) and above everything router-id
2.-The router add interfaces to the link state database ( dictated by the network command)
3.-Send a hello message on a chosen interface : it ‘s consider a * Down state: It says hello when trying to form a relationship

CCNP Route labs. EIGRP Basic Configuration

EIGRP Basic Configuration -Lab 5 -Study Guide for CCNP Route

Objective

:
Configure EIGRP for the shown network using EIGRP AS 90. Corporate policy dictates that you must use specific wildcard masks on R2 and R3. In addition, EIGRP should be configured in such a way that it does not operate like a classful routing protocol. Finally, the BB router has a static route to 192.168.1.0/24; R2 and R3 should receive this route via EIGRP without using redistribution
R2 and R3 should have a default route pointing to the 192.168.1.0/24 network at the corporate office. No static routes can be used to accomplish this.
In order to meet security standards, EIGRP should not form neighbor relationships on any interface where other EIGRP routers do not exist.
To improve the efficiency of the remote routers R2 and R3, the corporate BB router should summarize 172.30.0.0 – 172.30.7.255 into a single network advertisement.
To best utilize available network bandwidth, the corporate BB router should perform unequal load balancing to reach the 10.1.2.0/24 network.

Exercise #5 CBT nuggets, CCNP Route Paragraph #1

Configuration BB

Start , enable, conf t

Asignation of the ip of each interface on R1

interface Loopback2
ip address 172.30.2.1 255.255.255.0

interface Loopback3
ip address 172.30.3.1 255.255.255.0
interface Loopback4
ip address 172.30.4.1 255.255.255.0
interface Loopback5
ip address 172.30.5.1 255.255.255.0
interface Loopback6
ip address 172.30.6.1 255.255.255.0
interface Loopback7
ip address 172.30.7.1 255.255.255.0
interface Loopback8
ip address 172.30.8.1 255.255.255.0
interface Loopback0
ip address 172.30.0.1 255.255.255.0
interface Loopback1
ip address 172.30.1.1 255.255.255.0
Interface Serial0/0
Description Connection al R2
Bandwidth 128
Ip address 10.1.24.1 255.255.255.252 ( el “252” viene del subneting del /30)
No shut

Interface Serial0/1
Description Connection al R3
Bandwidth 256
Ip address 10.1.34.1 255.255.255.252 ( el “252” viene del subneting del /30)
No shut

Exit, exit

Verification of IP and conection to R1

We need to enable our SERIAL interfaces in R1

Configuration of R2

Asigning the ip to the interfaces

no auto ( para que no halla auto-summary, se aplica no a los IP no a los network)

end

ctrl Z

#show IP route ( para aver las connecciones)
#Show ip eigrp neighbors ` ( par aver la situacion de la conneccion, hasta ahora solo BB)

Explicacion de terminos de show IP eigrp neighbors

Configuracion del R3

#show ip route

We see the BB and we checked that BB learned about the different routes:
BB#show ip routes
We can see that if connects to SW2 (10.1.25.0 and 10.1.2.0 using 10.1.34.0 because is the fastest bandwidth connection)
An important command: BB#show ip eigrp topology (17:49:mins.)
-It will show one successor : the less FD ( feasible distance) : 10.1.34.2

-It will show the slower : feasible successor, the back up

Second Paragraph

We verify the information’s in show IP routes in r2 if it’s receiving the static route of 192.168.1.0 of BB

Third Paragraph

We confirm at “section” eigrp : r2#show run | s eigrp

Paragraph 4

D.-Them we go to R2 and check on R2#show IP route and them R3

Paragraph 5

_____________________________________________________________________________________________________

I hope this page would be informative..This is basically for study purpose..
For any questions, please let me know at ohhhvictor@gmail.com