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Does 'sh int' include multicast packet ?

Loop occured in my network.After I sh int , I have some question.

Almost all input packet is broadcast,so where is multicast ? Does the number of broadcast include multicast ?

thanks!

switch#sh int g2/24

GigabitEthernet2/24 is administratively down, line protocol is down (disabled)

Hardware is C6k 1000Mb 802.3, address is 0012.0165.220f (bia 0012.0165.220f)

MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

reliability 255/255, txload 0/255, rxload 0/255

Encapsulation ARPA, loopback not set

Full-duplex, 1000Mb/s, media type is SX

input flow-control is off, output flow-control is off

Clock mode is auto

ARP type: ARPA, ARP Timeout 04:00:00

Last input 2d06h, output 2d06h, output hang never

Last clearing of "show interface" counters never

Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

4826063024 packets input, 315908754162 bytes, 0 no buffer

Received 4822155236 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 input packets with dribble condition detected

4672521890 packets output, 306231117497 bytes, 0 underruns

0 output errors, 0 collisions, 3 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

2 REPLIES

Re: Does 'sh int' include multicast packet ?

Hi,

I don't know which model of Cisco Switch you have,

Here is the output from one of my C2960 which do seems to have this counter under the show interface command.

Switch#sh int fa 0/1

FastEthernet0/1 is down, line protocol is down (notconnect)

Hardware is Fast Ethernet, address is 001a.e2d2.fd81 (bia 001a.e2d2.fd81)

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Auto-duplex, Auto-speed, media type is 10/100BaseTX

input flow-control is off, output flow-control is unsupported

ARP type: ARPA, ARP Timeout 04:00:00

Last input never, output 2d18h, 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: 0/40 (size/max)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

23913299 packets input, 2949977365 bytes, 0 no buffer

Received 30877 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

3 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 26 multicast, 0 pause input

0 input packets with dribble condition detected

28119602 packets output, 186334128 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 PAUSE output

0 output buffer failures, 0 output buffers swapped out

HTH

Shaheen

Community Member

Re: Does 'sh int' include multicast packet ?

My switch is 6509.It doesn't have.

6509A>sh ver

Cisco Internetwork Operating System Software

IOS (tm) s72033_rp Software (s72033_rp-PSV-M), Version 12.2(17d)SXB11, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2005 by cisco Systems, Inc.

Compiled Tue 15-Nov-05 16:03 by pwade

Image text-base: 0x40020FBC, data-base: 0x41C98000

ROM: System Bootstrap, Version 12.2(17r)S2, RELEASE SOFTWARE (fc1)

BOOTLDR: s72033_rp Software (s72033_rp-PSV-M), Version 12.2(17d)SXB11, RELEASE SOFTWARE (fc1)

400-6509-A uptime is 5 weeks, 2 days, 5 hours, 1 minute

Time since 400-6509-A switched to active is 5 weeks, 2 days, 5 hours, 0 minutes

System returned to ROM by unknown reload cause - suspect boot_data[BOOT_COUNT] 0x0, BOOT_COUNT 0, BOOTDATA 19 (SP by power-on)

System restarted at 04:03:53 bj Sun Nov 11 2007

System image file is "sup-bootflash:s72033-psv-mz.122-17d.SXB11.bin"

cisco WS-C6509 (R7000) processor (revision 2.0) with 458752K/65536K bytes of memory.

Processor board ID SMG0847A019

SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache

Last reset from power-on

X.25 software, Version 3.0.0.

Bridging software.

29 Virtual Ethernet/IEEE 802.3 interface(s)

122 Gigabit Ethernet/IEEE 802.3 interface(s)

1917K bytes of non-volatile configuration memory.

8192K bytes of packet buffer memory.

65536K bytes of Flash internal SIMM (Sector size 512K).

Configuration register is 0x2102

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