Bagaimana membentuk IRB antar 3 router

How to configure IRB(Integrated Routing and Bridging)

[ Backgroud ]

PC1 is connected to Fa0/0(no IP address, bridge) of Router = IP 10.10.10.1/24
PC2 is connected to Fa0/1(no IP address, bridge) of Router = IP 10.10.10.2/24
PC3 is connected to Fa1/0(IP 20.20.20.1) of Router = IP 20.20.20.2/24
BVI is configured on Router = IP 10.10.10.3/24. (Gateway IP for PC1 and PC2)


Router#config t
Router(config)# bridge irb

Router(config)# bridge 100 protocol ieee
Router(config)# bridge 100 bridge ip
Router(config)# bridge 100 route ip

Router(config)# interface bvi
Router(config-if)# ip address 10.10.10.3 255.255.255.0

Router(config)# interface fa0/0
Router(config-if)# bridge group 100

Router(config)# interface fa0/1
Router(config-if)# bridge group 100


Router# sh int irb

FastEthernet0/0

Routed protocols on FastEthernet0/0:
ip

Bridged protocols on FastEthernet0/0:
appletalk clns decnet ip

Software MAC address filter on FastEthernet0/0
Hash Len Address Matches Act Type
0x00: 0 ffff.ffff.ffff 1 RCV Physical broadcast
0x2A: 0 0900.2b01.0001 0 RCV DEC spanning tree
0x6D: 0 cc09.6dcf.0000 4 RCV Interface MAC address
0x6D: 1 cc09.6dcf.0000 0 RCV Bridge-group Virtual Interface
0xC0: 0 0100.0ccc.cccc 29 RCV CDP
0xC2: 0 0180.c200.0000 0 RCV IEEE spanning tree
0xC2: 1 0180.c200.0000 0 RCV IBM spanning tree
0xC2: 2 0100.0ccd.cdce 0 RCV VLAN Bridge STP

FastEthernet0/1

Routed protocols on FastEthernet0/1:
ip

Bridged protocols on FastEthernet0/1:
appletalk clns decnet ip

Software MAC address filter on FastEthernet0/1
Hash Len Address Matches Act Type
0x00: 0 ffff.ffff.ffff 12 RCV Physical broadcast
0x2A: 0 0900.2b01.0001 0 RCV DEC spanning tree
0x6C: 0 cc09.6dcf.0001 0 RCV Interface MAC address
0x6D: 0 cc09.6dcf.0000 14 RCV Bridge-group Virtual Interface
0xC0: 0 0100.0ccc.cccc 29 RCV CDP
0xC2: 0 0180.c200.0000 0 RCV IEEE spanning tree
0xC2: 1 0180.c200.0000 0 RCV IBM spanning tree
0xC2: 2 0100.0ccd.cdce 0 RCV VLAN Bridge STP

FastEthernet1/0

Routed protocols on FastEthernet1/0:
ip

BVI100

Routed protocols on BVI100:
ip
Router#



Router# sh int bvi 100
BVI100 is up, line protocol is up
Hardware is BVI, address is cc09.6dcf.0000 (bia cc09.6dcf.0000)
Internet address is 10.10.10.3/24
MTU 1500 bytes, BW 100000 Kbit, DLY 5000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
7 packets input, 690 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
28 packets output, 3084 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
Router#


Router# sh bridge

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

Bridge Group 100:

Address Action Interface Age RX count TX count
cc0a.6dcf.0000 forward FastEthernet0/1 0 5 5
cc05.6dcf.0000 forward FastEthernet0/0 0 5 5
Router#