12-5
Ethernet Card Software Feature and Configuration Guide, R7.2
January 2009
Chapter 12 Configuring IRB
Monitoring and Verifying IRB
The following is sample output from the show interfaces bvi and show interfaces irb commands:

Example 12-3 Monitoring and Verifying IRB

Router# show interfaces bvi1
BVI1 is up, line protocol is up
Hardware is BVI, address is 0011.2130.b340 (bia 0000.0000.0000)
Internet address is 100.100.100.1/24
MTU 1500 bytes, BW 145152 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 03:35:28, 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
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
1353 packets output, 127539 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
Router# show interfaces irb
BVI1
Software MAC address filter on BVI1
Hash Len Address Matches Act Type
0x00: 0 ffff.ffff.ffff 0 RCV Physical broadcast
GigabitEthernet0
Bridged protocols on GigabitEthernet0:
clns ip
Software MAC address filter on GigabitEthernet0
Hash Len Address Matches Act Type
0x00: 0 ffff.ffff.ffff 0 RCV Physical broadcast
0x58: 0 0100.5e00.0006 0 RCV IP multicast
0x5B: 0 0100.5e00.0005 0 RCV IP multicast
0x65: 0 0011.2130.b344 0 RCV Interface MAC address
0xC0: 0 0100.0ccc.cccc 0 RCV CDP
0xC2: 0 0180.c200.0000 0 RCV IEEE spanning tree
POS0

Table 12-1 Commands for Monitoring and Verifying IRB

Command Purpose
Router# show interfaces bvi

bvi-interface-number

Shows BVI information, such as the BVI MAC address and processing statistics. The

bvi-interface-number

is the number of the bridge group assigned to the BVI interface.
Router# show interfaces [

type-number

] irb Shows BVI information for the following:

• Protocols that this bridged interface can

route to the other routed interface (if this packet is routable).

• Protocols that this bridged interface bridges