Cisco CCIP MPLS Study Guide phần 10 pps

Service Provider Network Configuration with OSPF

411

interface Serial0
description *** Link to Atlanta POP ***
ip address 192.168.3.5 255.255.255.252
no fair-queue
!
interface Serial1
no ip address
shutdown
!
router bgp 65001
no synchronization
bgp log-neighbor-changes
redistribute connected
neighbor 192.168.3.6 remote-as 65000
no auto-summary
!
ip classless
no ip http server
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
transport input none
ip netmask-format decimal

line aux 0
line vty 0 4
privilege level 15
password cisco
logging synchronous
login
ip netmask-format decimal
!
end
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

412

Appendix B


Service Provider Tag Switching with OSPF and IS-IS

Atlanta POP Router Configuration

On the Atlanta POP router, standard OPSF is configured as the IGP. I-BGP
is set up between the Atlanta and Raleigh POP routers. An E-BGP session is
set up between the Atlanta POP router and Peer 1. Tag switching is enabled
only on the internal service provider link.

Atlanta#

show running-config

Building configuration
Current configuration : 1572 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Atlanta
!
enable password cisco
!
!
!
!
!
memory-size iomem 25
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
ip cef
cns event-service server
!
!
!
!
!
Simpo PDF Merge and Split Unregistered Version -

Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

Service Provider Network Configuration with OSPF

413

interface Loopback0
ip address 204.134.83.1 255.255.255.255
!
interface Serial0/0
description *** Link to Core Router ***
ip address 204.134.83.5 255.255.255.252
tag-switching ip
no fair-queue
clockrate 64000
!
interface Serial0/1
description *** Link to Peer1 ***
ip address 192.168.3.6 255.255.255.252
clockrate 64000
!
interface Serial0/2
no ip address
shutdown
clockrate 64000
!
interface Serial0/3
no ip address
shutdown

clockrate 64000
!
interface Ethernet1/0
no ip address
shutdown
!
interface Ethernet1/1
no ip address
shutdown
!
interface Ethernet1/2
no ip address
shutdown
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

414

Appendix B


Service Provider Tag Switching with OSPF and IS-IS

interface Ethernet1/3
no ip address
shutdown
!
router ospf 1

log-adjacency-changes
network 204.134.83.1 0.0.0.0 area 0
network 204.134.83.5 0.0.0.0 area 0
!
router bgp 65000
no synchronization
bgp log-neighbor-changes
neighbor 192.168.3.5 remote-as 65001
neighbor 204.134.83.3 remote-as 65000
neighbor 204.134.83.3 update-source Loopback0
neighbor 204.134.83.3 next-hop-self
no auto-summary
!
ip classless
no ip http server
!
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
transport input none
ip netmask-format decimal
line aux 0
line vty 0 4
privilege level 15
password cisco
logging synchronous
login

ip netmask-format decimal
!

end
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

Service Provider Network Configuration with OSPF

415

Core Router Configuration

On the Core router, standard OPSF is configured as the IGP. Tag switching
is enabled on the two service provider links.

Core#

show running-config

Building configuration
Current configuration : 1353 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Core

!
enable password cisco
!
!
!
!
!
memory-size iomem 25
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
ip cef
cns event-service server
!
!
!
!
!
interface Loopback0
ip address 204.134.83.2 255.255.255.255
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

416

Appendix B


Service Provider Tag Switching with OSPF and IS-IS

interface Serial0/0
description *** Connection to Raleigh POP ***
ip address 204.134.83.9 255.255.255.252
tag-switching ip
no fair-queue
!
interface Serial0/1
description *** Connection to Atlanta POP ***
ip address 204.134.83.6 255.255.255.252
tag-switching ip
!
interface Serial0/2
no ip address
shutdown
!
interface Serial0/3
no ip address
shutdown
!
interface Ethernet1/0
no ip address
shutdown
!
interface Ethernet1/1
no ip address
shutdown
!

interface Ethernet1/2
no ip address
shutdown
!
interface Ethernet1/3
no ip address
shutdown
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

Service Provider Network Configuration with OSPF

417

router ospf 1
log-adjacency-changes
network 204.134.83.2 0.0.0.0 area 0
network 204.134.83.6 0.0.0.0 area 0
network 204.134.83.9 0.0.0.0 area 0
!
ip classless
no ip http server
!
!
!
line con 0
exec-timeout 0 0
privilege level 15

logging synchronous
transport input none
ip netmask-format decimal
line aux 0
line vty 0 4
privilege level 15
password cisco
logging synchronous
login
ip netmask-format decimal
!

end

Raleigh POP Router Configuration

On the Raleigh POP router, standard OPSF is configured as the IGP. I-BGP
is set up between the Raleigh and Atlanta POP routers. An E-BGP session is
set up between the Raleigh POP and Peer2. Tag switching is enabled only on
the internal service provider link.

Raleigh#

show running-config

Building configuration
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

418

Appendix B


Service Provider Tag Switching with OSPF and IS-IS

Current configuration : 1599 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Raleigh
!
enable password cisco
!
!
!
!
!
memory-size iomem 25
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
ip cef
cns event-service server
!

!
!
!
!
interface Loopback0
ip address 204.134.83.3 255.255.255.255
!
interface Serial0/0
no ip address
shutdown
no fair-queue
clockrate 64000
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

Service Provider Network Configuration with OSPF

419

interface Serial0/1
description *** Link to Peer2 ***
ip address 192.168.3.9 255.255.255.252
clockrate 64000
!
interface Serial0/2
no ip address
shutdown
clockrate 64000

!
interface Serial0/3
description *** Link to Core Router ***
ip address 204.134.83.10 255.255.255.252
tag-switching ip
clockrate 64000
!
interface Ethernet1/0
no ip address
shutdown
!
interface Ethernet1/1
no ip address
shutdown
!
interface Ethernet1/2
no ip address
shutdown
!
interface Ethernet1/3
no ip address
shutdown
!
router ospf 1
log-adjacency-changes
network 204.134.83.3 0.0.0.0 area 0
network 204.134.83.10 0.0.0.0 area 0
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA

www.sybex.com

420

Appendix B


Service Provider Tag Switching with OSPF and IS-IS

router bgp 65000
no synchronization
bgp log-neighbor-changes
neighbor 192.168.3.10 remote-as 65002
neighbor 204.134.83.1 remote-as 65000
neighbor 204.134.83.1 update-source Loopback0
neighbor 204.134.83.1 next-hop-self
no auto-summary
!
ip classless
no ip http server
!
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
transport input none
ip netmask-format decimal
line aux 0

line vty 0 4
privilege level 15
password cisco
logging synchronous
login
ip netmask-format decimal
!
end

Peer 2 Router Configuration

On the Peer 2 router, MPLS is not enabled; only standard BGP is enabled.

Peer2#

show running-config

Building configuration
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

Service Provider Network Configuration with OSPF

421

Current configuration : 951 bytes
!
version 12.1
service timestamps debug uptime

service timestamps log uptime
no service password-encryption
!
hostname Peer2
!
enable password cisco
!
!
!
!
!
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
!
!
!
interface Loopback0
ip address 192.168.2.1 255.255.255.255
!
interface Ethernet0
no ip address
shutdown
!
interface Serial0
description *** Link to Raleigh POP ***
ip address 192.168.3.10 255.255.255.252
no fair-queue
!

interface Serial1
no ip address
shutdown
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

422

Appendix B


Service Provider Tag Switching with OSPF and IS-IS

router bgp 65002
no synchronization
bgp log-neighbor-changes
redistribute connected
neighbor 192.168.3.9 remote-as 65000
no auto-summary
!
ip classless

no ip http server
!
!
line con 0
exec-timeout 0 0
privilege level 15

logging synchronous
transport input none
ip netmask-format decimal
line aux 0
line vty 0 4
privilege level 15
password cisco
logging synchronous
login
ip netmask-format decimal
!
end

Routing Tables

This section shows you the routing tables of each network device in the
example network. Notice that the Core router has no knowledge of the peer
router subnets and the peer routers have no knowledge of the core service
provider networks. The Atlanta and Raleigh POP routers have full knowl-
edge of all the subnets in the network.
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

Service Provider Network Configuration with OSPF

423

Peer 1 Routing Table

On the Peer 1 router, internal service provider routes do not show up in the
routing table:

Peer1#

show ip route

.
. Output Omitted
.
Gateway of last resort is not set
192.168.1.0 255.255.255.255 is subnetted, 1 subnets
C 192.168.1.1 is directly connected, Loopback0
192.168.2.0 255.255.255.255 is subnetted, 1 subnets
B 192.168.2.1 [20/0] via 192.168.3.6, 00:08:15
192.168.3.0 255.255.255.252 is subnetted, 2 subnets
B 192.168.3.8 [20/0] via 192.168.3.6, 00:08:15

C 192.168.3.4 is directly connected, Serial0

Atlanta Routing Table

On the Atlanta POP router, all routes (both peer and service provider) are
displayed in the routing table:

Atlanta#

show ip route

.

. Output Omitted
.
Gateway of last resort is not set
204.134.83.0 255.255.255.0 is variably subnetted, 5
subnets, 2 masks
O 204.134.83.8 255.255.255.252
[110/1562] via 204.134.83.6, 00:10:08, Serial0/0
C 204.134.83.1 255.255.255.255 is directly
connected, Loopback0
O 204.134.83.3 255.255.255.255
[110/1563] via 204.134.83.6, 00:10:08, Serial0/0
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

424

Appendix B


Service Provider Tag Switching with OSPF and IS-IS

O 204.134.83.2 255.255.255.255
[110/782] via 204.134.83.6, 00:10:08, Serial0/0
C 204.134.83.4 255.255.255.252 is directly
connected, Serial0/0
192.168.1.0 255.255.255.255 is subnetted, 1 subnets
B 192.168.1.1 [20/0] via 192.168.3.5, 00:22:47
192.168.2.0 255.255.255.255 is subnetted, 1 subnets
B 192.168.2.1 [200/0] via 204.134.83.3, 00:09:24

192.168.3.0 255.255.255.252 is subnetted, 2 subnets
B 192.168.3.8 [200/0] via 204.134.83.3, 00:09:24

C 192.168.3.4 is directly connected, Serial0/1

Core Routing Table

On the Core router, only internal service provider routes show up in the
routing table:

Core#

show ip route

.
. Output Omitted
.
Gateway of last resort is not set
204.134.83.0 255.255.255.0 is variably subnetted, 5
subnets, 2 masks
C 204.134.83.8 255.255.255.252 is directly
connected, Serial0/0
O 204.134.83.1 255.255.255.255
[110/782] via 204.134.83.5, 00:10:51, Serial0/1
O 204.134.83.3 255.255.255.255
[110/782] via 204.134.83.10, 00:10:51, Serial0/0
C 204.134.83.2 255.255.255.255 is directly
connected, Loopback0
C 204.134.83.4 255.255.255.252 is directly

connected, Serial0/1
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

Service Provider Network Configuration with OSPF

425

Raleigh Routing Table

On the Raleigh POP router, both service provider and peer routers are
displayed in the routing table:

Raleigh#

show ip route

.
. Output Omitted
.
Gateway of last resort is not set
204.134.83.0 255.255.255.0 is variably subnetted,
5 subnets, 2 masks
C 204.134.83.8 255.255.255.252 is directly
connected, Serial0/3
O 204.134.83.1 255.255.255.255
[110/1563] via 204.134.83.9, 00:11:17, Serial0/3
C 204.134.83.3 255.255.255.255 is directly
connected, Loopback0

O 204.134.83.2 255.255.255.255
[110/782] via 204.134.83.9, 00:11:17, Serial0/3
O 204.134.83.4 255.255.255.252
[110/1562] via 204.134.83.9, 00:11:17, Serial0/3
192.168.1.0 255.255.255.255 is subnetted, 1 subnets
B 192.168.1.1 [200/0] via 204.134.83.1, 00:10:33
192.168.2.0 255.255.255.255 is subnetted, 1 subnets
B 192.168.2.1 [20/0] via 192.168.3.10, 00:24:05
192.168.3.0 255.255.255.252 is subnetted, 2 subnets
C 192.168.3.8 is directly connected, Serial0/1

B 192.168.3.4 [200/0] via 204.134.83.1, 00:10:34

Peer 2 Routing Table

On the Peer 2 router, no service provider routes are displayed in the
routing table:

Peer2#

show ip route

.
. Output Omitted
.
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

426

Appendix B


Service Provider Tag Switching with OSPF and IS-IS

Gateway of last resort is not set
192.168.1.0 255.255.255.255 is subnetted, 1 subnets
B 192.168.1.1 [20/0] via 192.168.3.9, 00:11:45
192.168.2.0 255.255.255.255 is subnetted, 1 subnets
C 192.168.2.1 is directly connected, Loopback0
192.168.3.0 255.255.255.252 is subnetted, 2 subnets
C 192.168.3.8 is directly connected, Serial0

B 192.168.3.4 [20/0] via 192.168.3.9, 00:11:45

Tags

In this section, the mapping of tags to IP prefixes shows that a complete
LSP exists between the loopback addresses on the Atlanta and Raleigh
POP routers. With an end-to-end LSP, the Core router only needs to
examine the label, and therefore does not require full knowledge of
the peer subnets.

Atlanta POP Forwarding Table

In the following output from the Atlanta POP router, you can see that a full
LSP exists between the Atlanta and Raleigh POP routers:

Atlanta#

show tag-switching forwarding-table
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
26 Pop tag 204.134.83.2 255.255.255.255 0 Se0/0 point2point
27 26 204.134.83.3 255.255.255.255 0 Se0/0 point2point
28 Pop tag 204.134.83.8 255.255.255.252 0 Se0/0 point2point
Core Forwarding Table
On the Core router, labeled packets between the Atlanta and Raleigh POP
routers will be label-switched, as indicated in the forwarding table:
Core#show tag-switching forwarding-table
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
26 Pop tag 204.134.83.3 255.255.255.255 1753 Se0/0 point2point
27 Pop tag 204.134.83.1 255.255.255.255 1812 Se0/1 point2point
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com
Service Provider Network Configuration with IS-IS 427
Raleigh POP Forwarding Table
In the following output from the Raleigh POP router’s forwarding table, you
can see that a full LSP exists between the Raleigh and Atlanta POP routers:
Raleigh#show tag-switching forwarding-table
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
26 Pop tag 204.134.83.2 255.255.255.255 0 Se0/3 point2point
27 Pop tag 204.134.83.4 255.255.255.252 0 Se0/3 point2point
28 27 204.134.83.1 255.255.255.255 0 Se0/3 point2point
Service Provider Network Configuration
with IS-IS

In this section, a sample network is configured with BGP between the
PE and CE routers. IS-IS is configured as the service provider IGP. Figure B.3
illustrates this network.
FIGURE B.3 A service provider network to be configured with IS-IS
Figure B.4 illustrates the routing protocol utilization in the service
provider network illustrated in Figure B.3.
FIGURE B.4 Network protocol utilization
Peer 2Peer 1 Atlanta Core Raleigh
Serial 0
Serial 0/1
Serial 0/0
Serial 0/1
Serial 0/0
Serial 0/3
Serial 0/1
Serial 0
Peer 2
BGP
AS 65002
Peer 1
BGP
AS 65001
Atlanta Core Raleigh
I-BGP
AS 65000
IS-IS
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com
428 Appendix B


Service Provider Tag Switching with OSPF and IS-IS
Table B.3 lists the IP addresses and interfaces of the CE devices in
Figure B.3.
Table B.4 lists the IP addresses and interfaces of the service provider
devices in Figure B.3.
Router Configuration
This section shows the configuration of all the network devices in the example
network. The peer routers run BGP, the Atlanta and Raleigh POP routers
run OSPF and BGP, and the Core router runs only OSPF.
Peer 1 Router Configuration
On the Peer 1 router, MPLS is not enabled; only standard BGP is enabled.
Peer1#show running-config
Building configuration
Current configuration : 914 bytes
!
TABLE B.3 Customer Addressing
Device Loopback 0 Serial 0
Peer 1 192.168.1.1/32 192.168.3.5/30
Peer 2 192.168.2.1/32 192.168.3.10/30
TABLE B.4 Service Provider Addressing
Device Loopback 0 Serial 0/0 Serial 0/1 Serial 0/3
Atlanta 204.134.83.1/32 204.134.83.5/30 192.168.3.6/30 N/A
Core 204.134.83.2/32 204.134.83.9/30 204.134.83.6/30 N/A
Raleigh 204.134.83.3/32 N/A 192.168.3.9/30 204.134.83.10/30
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com
Service Provider Network Configuration with IS-IS 429
version 12.1

service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Peer1
!
enable password cisco
!
!
!
!
!
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
!
!
!
interface Loopback0
ip address 192.168.1.1 255.255.255.255
!
interface Ethernet0
no ip address
shutdown
!
interface Serial0
description *** Link to Atlanta POP ***
ip address 192.168.3.5 255.255.255.252
no fair-queue

!
interface Serial1
no ip address
shutdown
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com
430 Appendix B

Service Provider Tag Switching with OSPF and IS-IS
router bgp 65001
no synchronization
bgp log-neighbor-changes
redistribute connected
neighbor 192.168.3.6 remote-as 65000
no auto-summary
!
ip classless
no ip http server
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
transport input none
ip netmask-format decimal
line aux 0
line vty 0 4

privilege level 15
password cisco
logging synchronous
login
ip netmask-format decimal
!
end
Atlanta POP Router Configuration
On the Atlanta POP router, standard IS-IS is configured as the IGP. I-BGP is
set up between the Atlanta and Raleigh POP routers. An E-BGP session is set
up between the Atlanta POP router and Peer 1. Tag switching is enabled only
on the internal service provider link.
Atlanta#show running-config
Building configuration
Current configuration : 1556 bytes
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com
Service Provider Network Configuration with IS-IS 431
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Atlanta
!
enable password cisco
!
!

!
!
!
memory-size iomem 25
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
ip cef
cns event-service server
!
!
!
!
!
interface Loopback0
ip address 204.134.83.1 255.255.255.255
ip router isis
!
interface Serial0/0
description *** Link to Core Router ***
ip address 204.134.83.5 255.255.255.252
ip router isis
tag-switching ip
no fair-queue
clockrate 64000
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com

432 Appendix B

Service Provider Tag Switching with OSPF and IS-IS
interface Serial0/1
description *** Link to Peer1 ***
ip address 192.168.3.6 255.255.255.252
clockrate 64000
!
interface Serial0/2
no ip address
shutdown
clockrate 64000
!
interface Serial0/3
no ip address
shutdown
clockrate 64000
!
interface Ethernet1/0
no ip address
shutdown
!
interface Ethernet1/1
no ip address
shutdown
!
interface Ethernet1/2
no ip address
shutdown
!

interface Ethernet1/3
no ip address
shutdown
!
router isis
net 49.0001.1111.1111.1111.00
is-type level-1
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com
Service Provider Network Configuration with IS-IS 433
router bgp 65000
no synchronization
bgp log-neighbor-changes
neighbor 192.168.3.5 remote-as 65001
neighbor 204.134.83.3 remote-as 65000
neighbor 204.134.83.3 update-source Loopback0
neighbor 204.134.83.3 next-hop-self
no auto-summary
!
ip classless
no ip http server
!
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous

transport input none
ip netmask-format decimal
line aux 0
line vty 0 4
privilege level 15
password cisco
logging synchronous
login
ip netmask-format decimal
!
end
Core Router Configuration
On the Core router, standard IS-IS is configured as the IGP. Tag switching
is enabled on the two service provider links.
Core#show running-config
Building configuration
Current configuration : 1317 bytes
!
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com
434 Appendix B

Service Provider Tag Switching with OSPF and IS-IS
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Core

!
enable password cisco
!
!
!
!
!
memory-size iomem 25
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
ip cef
cns event-service server
!
!
!
!
!
interface Loopback0
ip address 204.134.83.2 255.255.255.255
ip router isis
!
interface Serial0/0
description *** Connection to Raleigh POP ***
ip address 204.134.83.9 255.255.255.252
ip router isis
tag-switching ip
no fair-queue
!

Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com
Service Provider Network Configuration with IS-IS 435
interface Serial0/1
description *** Connection to Atlanta POP ***
ip address 204.134.83.6 255.255.255.252
ip router isis
tag-switching ip
!
interface Serial0/2
no ip address
shutdown
!
interface Serial0/3
no ip address
shutdown
!
interface Ethernet1/0
no ip address
shutdown
!
interface Ethernet1/1
no ip address
shutdown
!
interface Ethernet1/2
no ip address
shutdown
!

interface Ethernet1/3
no ip address
shutdown
!
router isis
net 49.0001.2222.2222.2222.00
is-type level-1
!
ip classless
Simpo PDF Merge and Split Unregistered Version -
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com