Cisco Integrated Routing and Bridging...

Cisco Integrated Routing and Bridging (IRB)

Bridging yapısını kullanabileceğimiz en basit yapı aşağıdaki gibi olabilir. Burada Router 1 ve Router 2 üzerinde WAN ve LAN arayüzleri arasında bridge tanımlanmıştır. Bu sayede PC 1 ve PC 2 aralarında iletişim kurabilmektedir.

Bu topolojiyi gerçekleyebilmek için aşağıdaki configurasyon yapılmıştır.

=========
| Router 1 |
=========

controller DSL 0
mode atm
line-term co
line-mode 2-wire line-zero
dsl-mode shdsl symmetric annex B
line-rate auto
!
bridge irb
!
interface ATM0
no ip address
no atm ilmi-keepalive
!
interface ATM0.1 point-to-point
pvc 8/35
encapsulation aal5snap
!
bridge-group 1
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
no ip address
bridge-group 1
!
bridge 1 protocol ieee
bridge 1 route ip

=========
| Router 2 |
=========

controller DSL 0

mode atm

line-term cpe

line-mode 2-wire line-zero

dsl-mode shdsl symmetric annex B

line-rate auto
!
bridge irb
!
interface ATM0
no ip address
no atm ilmi-keepalive
!
interface ATM0.1 point-to-point
pvc 8/35
encapsulation aal5snap
!
bridge-group 1
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
no ip address
bridge-group 1
!
bridge 1 protocol ieee
bridge 1 route ip

=========
| PC 1 |
=========

IP Address : 10.1.1.1/24
Gateway : no

> ping 10.1.1.2
PING 10.1.1.2 (10.1.1.2) 56(84) bytes of data.
64 bytes from 10.1.1.2: icmp_seq=1 ttl=64 time=4.50 ms
64 bytes from 10.1.1.2: icmp_seq=2 ttl=64 time=4.58 ms
64 bytes from 10.1.1.2: icmp_seq=3 ttl=64 time=4.45 ms

=========
| PC 2 |
=========

IP Address : 10.1.1.2/24
Gateway : no

Bridge'i kontrol etmek için aşağıdaki komutlar kullanılabilir:

---

Router 1#show bridge group

Bridge Group 1 is running the IEEE compatible Spanning Tree protocol

Port 17 (Vlan2) of bridge group 1 is forwarding
Port 23 (ATM0.1 RFC 1483) of bridge group 1 is forwarding

---

Router 1#show bridge 1

Total of 300 station blocks, 298 free
Codes: P - permanent, S - self

Bridge Group 1:

Address Action Interface Age RX count TX count
0011.433c.7ece forward ATM0.1 0 18842 16783
000f.eab9.d431 forward Vlan2 0 17425 16789

---

Router 1#show bridge 1 verbose

Total of 300 station blocks, 298 free
Codes: P - permanent, S - self

BG Hash Address Action Interface VC Age RX count TX count
1 B0/0 0011.433c.7ece forward ATM0.1 2 0 18950 16891
1 E5/0 000f.eab9.d431 forward Vlan2 - 0 17533 16897

Flood ports (BG 1) RX count TX count
Vlan2 0 111
ATM0.1 111 0

---

Yardımcı kaynaklar:

http://davidbombal.com/free-cisco-tests-ebooks-exams-ccna-ccent-ccnp-ccie-ccvp-ccip/bridging-ccie-ccip-ccnp/61-basic-bridging-over-a-wan-ccnp-ccie.html