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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
OL_28738-01
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
access-list hardware capture mode
access-list hardware capture mode
To select the mode of capturing control packets, use the access-list hardware capture mode command.
access-list hardware capture mode {global | vlan}
Syntax Description
Defaults The control packets are globally captured.
Command Modes Global configuratio n mode
Usage Guidelines Before configuring the capture mode, it is best to examine and modify your configuration to globally
disable features such as DHCP snooping or IGMP snooping, and instead enable them on specific
VLANs.
When changing to path managed mo de, be aware that control traffic may be bridged in hardware or
dropped initially until the per-vlan CAM entries are programmed in hardware.
You must ensure that any access control configuration on a member port or VLAN does not deny or drop
the control packets from being forwarded to the CPU for the features which are enabled on the VLAN.
If control packets are not permitted then the specific feature does not function.
Examples This example shows how to configure the switch to capture control packets on VLANs that are
configured to enable capturing control packets:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# access-list hardware capture mode vlan
Switch(config)# end
Switch#
This example shows how to configure the switch to capture control packets globally across all VLANs
(using a static ACL):
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# access-list hardware capture mode global
Switch(config)# end
Switch#
This example shows another way to configure the switch to capture control packets globally across all
VLANs:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# no access-list hardware capture mode vlan
Switch(config)# end
Switch#
global Specifies the capture of control packets globally on all VLANs.
vlan Specifies the capture of control packets on a specific VLAN.
- Catalyst 4500 Series Switch 1
- Cisco IOS Command Reference 1
- Catalyst 4500 Series IOS 3
- Commands 3
- C Commands 4
- D Commands 5
- E Commands 6
- F Commands 7
- H Commands 7
- I Commands 7
- L Commands 8
- M Commands 9
- O Commands 10
- N Commands 10
- P Commands 10
- S Commands 11
- Q Commands 11
- R Commands 11
- Chapter 12
- Show Commands 13
- T Commands 17
- U Commands 17
- V Commands 17
- OL-28738 -01 19
- Contents 20
- Con ten ts 21
- Audience 37
- Organization 37
- Related Documentation 38
- Conventions 38
- OpenSSL/Open SSL Project 39
- Command-Line Interface 43
- How to Find Command Options 44
- Understanding Command Modes 47
- Using the CLI String Search 48
- Regular Expressions 49
- Multiple-Character Patterns 50
- Multipliers 51
- Alternation 52
- Anchoring 52
- Saving Configuration Changes 53
- Switches 55
- #macro keywords 56
- Switch# ancp mode client 70
- • [no] dot1x critical 78
- • [no] dot1x guest-vlan vlan 78
- • inactivity value—Off 89
- • restart valu e—Off 89
- Command Descriptio n 108
- OL_28738-01 113
- IOS documentation) 131
- EtherChannel group 136
- Disables debuggin g output 184
- • Debug is disabled 186
- Disables debugging output 187
- • FastEthernet 219
- • GigabitEthernet 219
- • Vlan vlan_id 219
- Command Description 271
- Table 2-6 Valid type Values 273
- • The version must be 4 331
- (global configuration) 379
- • External flash (slot0: ) 436
- • USB (usb0: ) 436
- • Jumbo frames are disabled 452
- • 1500 bytes for all ports 452
- • drop—Drops the packet 463
- Syntax for Bytes Per Second 469
- Syntax for Percent 469
- Table 2-9 Available Power 491
- Catalyst 4500 525
- • SPAN destination port 536
- • Private VLAN port 536
- • Tunnel po rt 536
- • Access port 536
- Switch# configure terminal 551
- • dot1x 572
- • webauth 572
- • show qos 578
- • show qos map 578
- • show running-config 578
- = 3FFF8 Length = 8 580
- = FC0000 Length = 40000 580
- Call Home Statistics 587
- • Shutdown threshold 718
- • Drop threshold 718
- • ip specifies IP protocol 730
- Field Description 771
- Switch# show shell functions 808
- Related Commands 828
- • FastEthernet—19 860
- • GigabitEthernet—1 860
- • Disabled 882
- • Forward-time—15 seconds 884
- • Hello-time—2 seconds 884
- • Max-age—20 seconds 884
- • Root—No STP root 884
- • No voice VLAN is enabled 903
- Switch(config-if)# 913
- • Disable the message timer 947
- Switch(vlan)# vlan 2 957
- Switch(config)# vmps retry 7 970
- Abbreviations 981
- Appendix A Abbreviations 982
- Numerics 993
- OL_28738 -01 1000
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