Transcript Configuring EIGRP - University of Wolverhampton

Configuring EIGRP
BSCI Module 2-2 – Implementing and Verifying EIGRP
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
1
Objectives
 Upon completing this lesson, you will be able to
describe how to implement EIGRP routing. This ability
includes being able to meet these objectives:
Describe the commands used in a basic EIGRP configuration
task
Explain how to configure a router to use wildcard masks to
select the interfaces and networks that will participate in EIGRP
routing
Configure the gateway of last resort or default route
Verify that the router recognizes EIGRP neighbors and routes
Verify EIGRP operations
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
2
Purpose of this Lesson
Coverage of topics new to the “EIGRP” module of BSCI.
 What’s new in this module?
Describe the commands used in a basic EIGRP configuration task
Explain how to configure a router to use wildcard masks to select
the interfaces and networks that will participate in EIGRP routing
Configure the gateway of last resort or default route.
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
3
Configuring EIGRP
Router(config)#
router eigrp autonomous-system-number
 Defines EIGRP as the IP routing protocol.
 All routers in the internetwork that must exchange EIGRP
routing updates must have the same autonomous system
number.
Router(config-router)#
network network-number [wildcard-mask]
 Identifies attached networks participating in EIGRP.
 The wildcard-mask is an inverse mask used to
determine how to interpret the address. The mask has
wildcard bits, where 0 is a match and 1 is “don’t care.”
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
4
Configuring EIGRP (Cont.)
Router(config-if)#
bandwidth kilobits
 Defines the interface’s bandwidth for the purposes of
sending routing update traffic.
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
5
Configuring EIGRP for IP
Network 192.168.1.0 is not configured on router A,
because it is not directly connected to router A.
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
6
Configuring EIGRP with IP (cont.)
Classful configuration example:
routerA(config)#router eigrp 109
routerA(config-router)#network 10.1.0.0
routerA(config-router)#network 10.4.0.0
routerA(config-router)#network 172.16.7.0
routerA(config-router)#network 172.16.2.0
Classless configuration example:
routerA(config)#router eigrp 109
routerA(config-router)#network 10.1.0.0 0.0.255.255
routerA(config-router)#network 10.4.0.0 0.0.255.255
routerA(config-router)#network 172.16.2.0 0.0.0.255
routerA(config-router)#network 172.16.7.0 0.0.0.255
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
7
Using the Wildcard Mask in EIGRP
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
8
Using and Configuring the ip default-network
command for EIGRP
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
9
Example R1 EIGRP Configuration
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
10
R2 EIGRP Configuration
<output omitted>
interface FastEthernet0/0
ip address 172.17.2.2 255.255.255.0
<output omitted>
interface Serial0/0/1
bandwidth 64
ip address 192.168.1.102 255.255.255.224
<output omitted>
router eigrp 100
network 172.17.2.0 0.0.0.255
network 192.168.1.0
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
11
Verifying EIGRP: show ip eigrp neighbors
R1#show ip eigrp neighbors
IP-EIGRP neighbors for process 100
H
Address
Interface
Hold Uptime
SRTT
(sec)
(ms)
0
192.168.1.102 Se0/0/1
10
00:07:22
10
R1#
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
RTO
Q Seq
Cnt Num
2280 0 5
12
Verifying EIGRP: show ip route
eigrp
R1#show ip route eigrp
D
172.17.0.0/16 [90/40514560] via 192.168.1.102, 00:07:01, Serial0/0/1
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
D
172.16.0.0/16 is a summary, 00:05:13, Null0
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
D
192.168.1.0/24 is a summary, 00:05:13, Null0
R1#show ip route
<output omitted>
Gateway of last resort is not set
D
172.17.0.0/16 [90/40514560] via 192.168.1.102, 00:06:55, Serial0/0/1
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
D
172.16.0.0/16 is a summary, 00:05:07, Null0
C
172.16.1.0/24 is directly connected, FastEthernet0/0
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C
192.168.1.96/27 is directly connected, Serial0/0/1
D
192.168.1.0/24 is a summary, 00:05:07, Null0
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
13
Verifying EIGRP: show ip protocols
R1#show ip protocols
Routing Protocol is "eigrp 100"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Default networks flagged in outgoing updates
Default networks accepted from incoming updates
EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
EIGRP maximum hopcount 100
EIGRP maximum metric variance 1
Redistributing: eigrp 100
EIGRP NSF-aware route hold timer is 240s
<output omitted>
Maximum path: 4
Routing for Networks:
172.16.1.0/24
192.168.1.0
Routing Information Sources:
Gateway
Distance
Last Update
(this router)
90
00:09:38
Gateway
Distance
Last Update
192.168.1.102
90
00:09:40
Distance: internal 90 external 170
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
14
Verifying EIGRP: show ip eigrp
interfaces
R1#show ip eigrp interfaces
IP-EIGRP interfaces for process 100
Xmit Queue
Interface
Peers Un/Reliable
Fa0/0
0
0/0
Se0/0/1
1
0/0
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
Mean
SRTT
0
10
Pacing Time
Un/Reliable
0/10
10/380
Multicast
Flow Timer
0
424
Pending
Routes
0
0
15
Verifying EIGRP: show ip eigrp
topology
R1#show ip eigrp topology
IP-EIGRP Topology Table for AS(100)/ID(192.168.1.101)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status
P 192.168.1.96/27, 1 successors, FD is 40512000
via Connected, Serial0/0/1
P 192.168.1.0/24, 1 successors, FD is 40512000
via Summary (40512000/0), Null0
P 172.16.0.0/16, 1 successors, FD is 28160
via Summary (28160/0), Null0
P 172.16.1.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 172.17.0.0/16, 1 successors, FD is 40514560
via 192.168.1.102 (40514560/28160), Serial0/0/1
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
16
Verifying EIGRP: show ip eigrp
traffic
R1#show ip eigrp traffic
IP-EIGRP Traffic Statistics for AS 100
Hellos sent/received: 429/192
Updates sent/received: 4/4
Queries sent/received: 1/0
Replies sent/received: 0/1
Acks sent/received: 4/3
Input queue high water mark 1, 0 drops
SIA-Queries sent/received: 0/0
SIA-Replies sent/received: 0/0
Hello Process ID: 113
PDM Process ID: 73
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
17
Summary
 The configuration commands for basic EIGRP include:
router eigrp autonomous-system
network network-number [wildcard-mask]
bandwidth kilobits
 The optional wildcard-mask parameter in the network
command is an inverse mask used to determine how to
interpret the network-number. A wildcard bit of 0 is a
match and of 1 is “don’t care”.
 Create and advertise a default route in an EIGRP
autonomous system with the ip default-network
network-number command.
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
18
Summary (cont.)
 Use the show ip eigrp neighbors command to
verify that the router recognizes its neighbors. Use the
show ip route eigrp command to verify that the
router recognizes routes from its neighbors.
 Use the show ip protocols, show ip eigrp
interfaces, show ip eigrp neighbors, show
ip eigrp topology, and show ip eigrp
traffic commands to verify EIGRP operations.
.
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
19
Activity
 Create a simple network using EIGRP as your routing
protocol. These steps were discussed at the beginning
of this module.
 Verify your connections by running the show
commands discussed in the module:
show ip protocols, show ip eigrp interfaces, show
ip eigrp neighbors, show ip eigrp topology, and
show ip eigrp traffic
 Reflection: Are your routes displayed correctly in the
routing table and identified as both directly connected
or EIGRP?
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
20
Self Check
 Which show command verifies the router can recognize
its neighbors?
 Show ip route eigrp has what function?
 What command establishes EIGRP as the routing
protocol?
 Identify the command to create and advertise a default
route in an EIGRP autonomous system.
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
21
Resources
 http://www.cisco.com/en/US/tech/tk365/technologies_te
ch_note09186a008009405c.shtml
 http://www.cisco.com/en/US/products/sw/iosswrel/ps18
28/products_command_reference_chapter09186a0080
0ca5a9.html
 http://www.cisco.com/en/US/tech/tk365/technologies_te
ch_note09186a0080093f07.shtml
.
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
22
Q and A
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
23
BSCI 2 - 2
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Confidential
24