C2950#sh run int fa0/1 Building configuration... Current configuration : 159 bytes ! interface FastEthernet0/1 switchport access vlan 11 switchport mode access load-interval 30 spanning-tree portfast spanning-tree bpdufilter enable end C2950# C2950#sh run int fa0/2 Building configuration... Current configuration : 159 bytes ! interface FastEthernet0/2 switchport access vlan 11 switchport mode access load-interval 30 spanning-tree portfast spanning-tree bpdufilter enable end C2950# C2950#sh int fa0/1 FastEthernet0/1 is up, line protocol is up (connected) Hardware is Fast Ethernet, address is 0011.2029.6801 (bia 0011.2029.6801) MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, reliability 255/255, txload 225/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 100Mb/s, media type is 100BaseTX input flow-control is unsupported output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:21, output 00:00:01, 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) 30 second input rate 0 bits/sec, 0 packets/sec 30 second output rate 88591000 bits/sec, 32007 packets/sec 3643 packets input, 1255516 bytes, 0 no buffer Received 3623 broadcasts (6 multicast) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 6 multicast, 0 pause input 0 input packets with dribble condition detected 3866309 packets output, 1337737606 bytes, 0 underruns 0 output errors, 0 collisions, 2 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 C2950# C2950#sh int fa0/2 FastEthernet0/2 is up, line protocol is up (connected) Hardware is Fast Ethernet, address is 0011.2029.6802 (bia 0011.2029.6802) MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, reliability 255/255, txload 1/255, rxload 226/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 100Mb/s, media type is 100BaseTX input flow-control is unsupported output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:24, output 00:00:04, 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) 30 second input rate 88904000 bits/sec, 32120 packets/sec 30 second output rate 0 bits/sec, 0 packets/sec 3931679 packets input, 1360355626 bytes, 0 no buffer Received 3931658 broadcasts (6 multicast) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 6 multicast, 0 pause input 0 input packets with dribble condition detected 3643 packets output, 1255516 bytes, 0 underruns 0 output errors, 0 collisions, 2 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 C2950# C2950#conf t Enter configuration commands, one per line. End with CNTL/Z. C2950(config)#int fa0/2 C2950(config-if)#storm-control ? action Action to take for storm-control broadcast Broadcast address storm control multicast Multicast address storm control unicast Unicast address storm control C2950(config-if)#storm-control action ? shutdown Shutdown this interface if a storm occurs trap Send SNMP trap if a storm occurs C2950(config-if)#storm-control action shutdown C2950(config-if)#storm-control broadcast ? level Set storm suppression level on this interface C2950(config-if)#storm-control broadcast level ? pps Enter suppression level in packets per second <0 - 100> Enter Integer part of level as percentage of bandwidth C2950(config-if)#storm-control broadcast level 15 C2950(config-if)# 00:18:53: %STORM_CONTROL-2-SHUTDOWN: Storm control shut down FastEthernet0/2 00:18:54: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down 00:18:55: %LINK-5-CHANGED: Interface FastEthernet0/2, changed state to administratively down 00:18:55: %LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to down 00:18:56: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2, changed state to down C2950(config-if)#end C2950# C2950#sh run int fa0/2 Building configuration... Current configuration : 237 bytes ! interface FastEthernet0/2 switchport access vlan 11 switchport mode access load-interval 30 shutdown storm-control broadcast level 15.00 storm-control action shutdown spanning-tree portfast spanning-tree bpdufilter enable end C2950# C2950#sh storm-control ? FastEthernet FastEthernet IEEE 802.3 GigabitEthernet GigabitEthernet IEEE 802.3z broadcast Broadcast storm control history Show interface storm history multicast Multicast storm control unicast Unicast storm control | Output modifiersC2950#sh storm-control Interface Filter State Trap State Upper Lower Current Traps Sent --------- ------------- ------------- ------- ------- ------- ---------- Fa0/1 inactive inactive 100.00% 100.00% N/A 0 Fa0/2 Shutdown inactive 15.00% 15.00% 0.00% 0 Fa0/3 inactive inactive 100.00% 100.00% N/A 0 Fa0/4 inactive inactive 100.00% 100.00% N/A 0 Fa0/5 inactive inactive 100.00% 100.00% N/A 0 Fa0/6 inactive inactive 100.00% 100.00% N/A 0 Fa0/7 inactive inactive 100.00% 100.00% N/A 0 Fa0/8 inactive inactive 100.00% 100.00% N/A 0 Fa0/9 inactive inactive 100.00% 100.00% N/A 0 Fa0/10 inactive inactive 100.00% 100.00% N/A 0 Fa0/11 inactive inactive 100.00% 100.00% N/A 0 Fa0/12 inactive inactive 100.00% 100.00% N/A 0 Fa0/13 inactive inactive 100.00% 100.00% N/A 0 Fa0/14 inactive inactive 100.00% 100.00% N/A 0 Fa0/15 inactive inactive 100.00% 100.00% N/A 0 Fa0/16 inactive inactive 100.00% 100.00% N/A 0 Fa0/17 inactive inactive 100.00% 100.00% N/A 0 Fa0/18 inactive inactive 100.00% 100.00% N/A 0 Fa0/19 inactive inactive 100.00% 100.00% N/A 0 Fa0/20 inactive inactive 100.00% 100.00% N/A 0 Fa0/21 inactive inactive 100.00% 100.00% N/A 0 Fa0/22 inactive inactive 100.00% 100.00% N/A 0 Fa0/23 inactive inactive 100.00% 100.00% N/A 0 Fa0/24 inactive inactive 100.00% 100.00% N/A 0 Gi0/1 inactive inactive 100.00% 100.00% N/A 0 Gi0/2 inactive inactive 100.00% 100.00% N/A 0 C2950#
Thursday, April 7, 2011
Catalyst 2950 Storm Control Quick Shot
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Yap, how they calculate the 'storm-control broadcast level 15', "15 percent" over?
ReplyDelete(3931658 / 88904000 )* 100% = 4.42?
hi min, 15 percent means 15Mbps over 100Mbps. As long as we are hitting 15Mbps, storm control will kick in. Thanks. :-)
ReplyDeleteSorry min, the value actually is referring to the "rising threshold" instead of the packet rate. I will need to spend some more time reading about it.
ReplyDeleteC3750(config-if)#storm-control broadcast level ?
<0.00 - 100.00> Enter rising threshold
bps Enter suppression level in bits per second
pps Enter suppression level in packets per second
C3750(config-if)#storm-control broadcast level
hi min, I have done a better storm control testing using a Catalyst 3750 based on the 'packets per second' rate, happy reading! :-)
ReplyDeletehttp://www.itcertnotes.com/2011/04/catalyst-3750-storm-control-quick-shot.html