Transcript Day_8_eigrp_update

Enhanced Interior Gateway
Routing Protocol
• Cisco proprietary protocol
• Classless routing protocol
• Metric (32 bit) : Composite Metric
(BW + Delay) by default.
• Administrative distance is 90
• Updates are sent through Multicast IP address
(224.0.0.10 ).
Enhanced Interior Gateway
Routing Protocol
•Max Hop count is 224 (100 by default)
•Supports IP, IPX and Apple Talk protocols
•Hello packets are sent every 5 seconds
•Convergence rate is fast
Autonomous System
• A unique number identifying the Routing domain of
the routers.
Ranges from 1- 65535
Public – 1 – 64512
Private – 64513 – 65535
•
An autonomous system is a collection of networks
under a common administrative domain
Routing Protocol Classification
IGP
• Interior Gateway
Protocol
• Routing protocols used
EGP
• Exterior Gateway
Protocol
• Routing protocol used
within an autonomous
between different
system
autonomous systems
• All routers will be
routing within the
same Autonomous
boundary
• RIP, IGRP, EIGRP,
OSPF, IS-IS
• Routers in different AS
need an EGP
• Border Gateway
Protocol is extensively
used as EGP
IGP & EGP
IGPs: RIP, OSPF,
IGRP, EIGRP
XYZ - AS 100
EGPs: BGP
IGPs: RIP, OSPF,
IGRP, EIGRP
ABC – AS 200
– IGPs operate within an autonomous system
– EGPs connect different autonomous systems
EIGRP Tables
• Neighbor Table: Contains information about directly
neighbors.
• Topology Table: Contains entries for all the destinations,
along with feasible distance, any feasible successor,
Advertised distance, and the calculated cost.
• Routing Table: Entries with the best path for each
destination from the Topology Table are moved into
Routing Table.
EIGRP Terminology
• Feasible Distance: Feasible distance (FD) is the cost
of the best route to a destination, including the local link
cost.
• Reported Distance: The cost of a route as advertised by
the neighbor, so it does not include the local link cost
If the advertised distance is less than the feasible
distance, the route is tagged as a feasible successor.
• Successor: The neighbor with best cost to the destination.
• Feasible Successor: The neighbor with second best cost to
the destination.
EIGRP - Network Diagram
10.0.0.1/8
S0
HYD
S1
10.0.0.2/8
E0
192.168.1.1/24
LAN - 192.168.1.0/24
11.0.0.1/8
S0
CHE
S1
11.0.0.2/8
E0
192.168.2.1/24
LAN – 192.168.2.0/24
BAN
E0
192.168.3.1/24
LAN - 192.168.3.0/24
Disadvantages of EIGRP
• Works only on Cisco Routers
Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
C:\> telnet 192.168.1.1
Connecting .....
================================
Welcome to Hyderabad Router
================================
User Access Verification
password : ****
Directly Connected Networks on
Hyderabad> enable
HYDERABAD Router
password : ****
Hyderabad# configure terminal
192.168.1.0
Enter configuration commands,
one per line. End with CNTL/Z.
10.0.0.0
Hyderabad(config)# interface serial 0
Hyderabad(config-if)# ip address 10.0.0.1 255.0.0.0
Hyderabad(config-if)# no shut
Hyderabad(config-if)# clockrate 64000
Hyderabad(config-if)# encapsulation hdlc
Hyderabad(config-if)# exit
Hyderabad(config)#
Hyderabad(config)# no ip routing
Hyderabad(config)# ip routing
Hyderabad(config)# router eigrp 10
Hyderabad(config-router)# network 192.168.1.0
Hyderabad(config-router)# network 10.0.0.0
Hyderabad(config-router)#
Configuring EIGRP
Router(config)# router eigrp <as no>
Router(config-router)# network <Network ID>
Hyderabad(config)# no ip routing
Hyderabad(config)# ip routing
Hyderabad(config)# router eigrp 10
Hyderabad(config-router)# network 192.168.1.0
Hyderabad(config-router)# network 10.0.0.0
Hyderabad(config-router)# ^Z
Hyderabad# show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i- IS-IS, L1-IS-IS level-1, L2-IS-IS level-2,*- candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
C
10.0.0.0/8 is directly connected, Serial0
D
11.0.0.0/8 [90/2681856] via 10.0.0.2, 00:00:49, Serial0
C
192.168.1.0/24 is directly connected, Ethernet0
D
192.168.2.0/24 [90/2195456]
10.0.0.2, 00:00:49, Serial0
ofvia
EIGRP
90 isMetric
nothing
but
D – for EIGRP routes
Administrative
Distance
D
192.168.3.0/24
[90/2707456]
via
10.0.0.2, 00:00:25, Serial0
Composite
Metric
Hyderabad#
Hyderabad# show ip eigrp topology
IP-EIGRP Topology Table for process 10
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 10.0.0.0/8, 1 successors, FD is 2169856
via Connected, Serial0
P 11.0.0.0/8, 1 successors, FD is 2681856
via 10.0.0.2 (2681856/2169856), Serial0
P 192.168.1.0/24, 1 successors, FD is 281600
via Connected, Ethernet0
P 192.168.2.0/24, 1 successors, FD is 2195456
via 10.0.0.2 (2195456/281600), Serial0
P 192.168.3.0/24, 1 successors, FD is 2707456
via 10.0.0.2 (2707456/2195456), Serial0
Hyderabad# show ip eigrp neighbors
IP-EIGRP neighbors for process 10
H
Address
Interface
Hold Uptime
SRTT
RTO Q Seq
(sec)
(ms)
Cnt Num
0
10.0.0.2
Se0
13 00:07:24
42
252 0 8
Hyderabad#
Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
C:\> telnet 192.168.2.1
Connecting .....
================================
Welcome to Chennai Router
================================
User Access Verification
password : ****
Chennai> enable Directly Connected Networks on
CHENNAI Router
password : ****
Chennai# configure terminal192.168.2.0
Enter configuration commands,
one per line. End with CNTL/Z.
10.0.0.0
Chennai(config)# interface serial 1
11.0.0.0
Chennai(config-if)# ip address
10.0.0.2 255.0.0.0
Chennai(config-if)# no shut
Chennai(config-if)# encapsulation hdlc
Chennai(config-if)# interface serial 0
Chennai(config-if)# ip address 11.0.0.1 255.0.0.0
Chennai(config-if)# no shut
Chennai(config-if)# encapsulation hdlc
Chennai(config)# no ip routing
Chennai(config)# ip routing
Chennai(config)# router eigrp 10
Chennai(config-router)# network 192.168.2.0
Chennai(config-router)# network 10.0.0.0
Chennai(config-router)# network 11.0.0.0
Configuring EIGRP
Chennai(config-router)#
Router(config)# router eigrp <as no>
Router(config-router)# network <Network ID>
Chennai(config)# no ip routing
Chennai(config)# ip routing
Chennai(config)# router eigrp 10
Chennai(config-router)# network 192.168.2.0
Chennai(config-router)# network 10.0.0.0
Chennai(config-router)# network 11.0.0.0
^
Chennai(config-router)# Z
Chennai# show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i- IS-IS, L1-IS-IS level-1, L2-IS-IS level-2,*- candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
C
10.0.0.0/8 is directly connected, Serial1
C
11.0.0.0/8 is directly connected, Serial0
D
192.168.1.0/24 [90/2195456] via 10.0.0.1, 00:01:27, Serial1
C
192.168.2.0/24 is directly connected, Ethernet0
D
192.168.3.0/24 [90/2195456]
viaof11.0.0.2,
00:01:00, Serial0
IGRP
90 is Metric
nothing
but
D – for EIGRP routes
Administrative
Distance
Chennai#
Composite
Metric
Chennai# show ip eigrp topology
IP-EIGRP Topology Table for process 10
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 10.0.0.0/8, 1 successors, FD is 2169856
via Connected, Serial1
P 11.0.0.0/8, 1 successors, FD is 2169856
via Connected, Serial0
P 192.168.1.0/24, 1 successors, FD is 2195456
via 10.0.0.1 (2195456/281600), Serial1
P 192.168.2.0/24, 1 successors, FD is 281600
via Connected, Ethernet0
P 192.168.3.0/24, 1 successors, FD is 2195456
via 11.0.0.2 (2195456/281600), Serial0
Chennai# show ip eigrp neighbors
IP-EIGRP neighbors for process 10
H
Address
Interface
Hold Uptime
SRTT
RTO Q Seq
(sec)
(ms)
Cnt Num
1
11.0.0.2
Se0
12 00:11:34 389 2334 0 4
0
10.0.0.1
Se1
13 00:12:02
27
200 0 5
Chennai#
Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
C:\> telnet 192.168.3.1
Connecting .....
================================
Welcome to Banglore Router
================================
User Access Verification
password : ****
Banglore> enableDirectly Connected Networks on
Banglore Router
password : ****
Banglore# configure terminal
192.168.3.0
Enter configuration commands,
one per line. End with CNTL/Z.
11.0.0.0
Banglore(config)# interface serial 1
Banglore(config-if)# ip address 11.0.0.2 255.0.0.0
Banglore(config-if)# no shut
Banglore(config-if)# clockrate 64000
Banglore(config-if)# encapsulation hdlc
Banglore(config-if)# exit
Banglore(config)#
Banglore(config)# no ip routing
Banglore(config)# ip routing
Banglore(config)# router eigrp 10
Banglore(config-router)# network 192.168.3.0
Banglore(config-router)# network 11.0.0.0
Banglore(config-router)#
Configuring EIGRP
Router(config)# router eigrp <as no>
Router(config-router)# network <Network ID>
Banglore(config)# no ip routing
Banglore(config)# ip routing
Banglore(config)# router eigrp 10
Banglore(config-router)# network 192.168.3.0
Banglore(config-router)# network 11.0.0.0
Banglore(config-router)# ^Z
Banglore# show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i- IS-IS, L1-IS-IS level-1, L2-IS-IS level-2,*- candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
D
10.0.0.0/8 [90/2681856] via 11.0.0.1, 00:01:32, Serial1
C
11.0.0.0/8 is directly connected, Serial1
D
192.168.1.0/24 [90/2707456]
11.0.0.1, 00:01:32, Serial1
ofvia
IGRP
90 is Metric
nothing
but
for EIGRP routes
D D –192.168.2.0/24
[90/2195456]
via
11.0.0.1, 00:01:32, Serial1
Administrative
Distance
Composite
Metric
C
192.168.3.0/24 is directly connected, Ethernet0
Banglore#
Banglore# show ip eigrp topology
IP-EIGRP Topology Table for process 10
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 10.0.0.0/8, 1 successors, FD is 2681856
via 11.0.0.1 (2681856/2169856), Serial1
P 11.0.0.0/8, 1 successors, FD is 2169856
via Connected, Serial1
P 192.168.1.0/24, 1 successors, FD is 2707456
via 11.0.0.1 (2707456/2195456), Serial1
P 192.168.2.0/24, 1 successors, FD is 2195456
via 11.0.0.1 (2195456/281600), Serial1
P 192.168.3.0/24, 1 successors, FD is 281600
via Connected, Ethernet0
Banglore# show ip eigrp neighbors
IP-EIGRP neighbors for process 10
H
Address
Interface
Hold Uptime
SRTT
RTO Q Seq
(sec)
(ms)
Cnt Num
0
11.0.0.1
Se1
14 00:14:15
36
216 0 7
Banglore#
Hyderabad# ping 192.168.3.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Hyderabad# ping 192.168.2.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Hyderabad#
Chennai# ping 192.168.1.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Chennai# ping 192.168.3.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Chennai#
Banglore# ping 192.168.1.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Banglore# ping 192.168.2.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Banglore#