Aruba 4100i User guide

AOS-CX 10.13 Layer-2

Bridging Guide

4100i, 6000, 6100, 6200 Switch Series

Published: November 2023

Edition: 1

|2

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Contents

Contents 3

About this document 8

Applicable products 8

Latest version available online 8

Command syntax notation conventions 8

About the examples 9

Identifying switch ports and interfaces 9

Introduction 11

MAC address table 12

MAC address table commands 13

clear mac-address 13

clear mac-address-table 15

mac-address-table age-time 16

show mac-address-table 16

show mac-address-table address 17

show mac-address-table count 18

show mac-address-table dynamic 19

show mac-address-table interface 20

show mac-address-table lockout 21

show mac address table mac move 22

show mac-address-table mac-move 23

show mac-address-table port 24

show mac-address-table static 25

show mac-address-table vlan 26

static-mac 26

VLANs 28

VLAN interfaces 28

Access interface 28

Trunk interface 29

Traffic handling summary 30

Comparing VLAN commands on PVOS, Comware, and AOS-CX 31

Protocol-mapped VLANs 32

MAC-based VLANs 32

VLAN translation 33

Assigning a VLAN to an interface 33

Assigning a VLAN ID to an access interface 33

Assigning a VLAN ID to a trunk interface 34

Assigning a native VLAN ID to a trunk interface 35

VLAN numbering 36

Configuring VLANs 36

Creating and enabling a VLAN 36

Disabling a VLAN 37

AOS-CX 10.13 Layer-2 Bridging Guide 3

Contents |4

Viewing VLAN configuration information 37

VLAN scenario 39

UUFB 46

VLAN commands 46

description 46

vlan name 47

show capacities-status vlan-count 48

show capacities svi-count 48

show capacities vlan-count 49

show capacities-status vlan-translation 50

show system internal-vlan-range 50

show vlan 51

show vlan port 52

show vlan summary 55

show vlan voice 56

shutdown 57

system internal-vlan-range 57

system vlan-client-presence-detect 58

trunk-dynamic-vlan-include 59

uufb 60

vlan 61

vlan access 62

vlan protocol 63

vlan translate 65

vlan trunk allowed 66

vlan trunk native 68

vlan trunk native tag 69

voice 70

QinQ 71

QinQ feature interactions 71

Configuring and displaying QinQ 72

QinQ limitations 73

QinQ commands 74

debug vlan qinq 74

diag-dump l2vlan basic 74

show qinq 75

show running-config qinq 76

show tech qinq 76

svlan 77

Loop protection 79

Interaction with other protocols 80

Configuring loop protection 80

Loop protect commands 82

loop-protect 82

loop-protect action 83

loop-protect re-enable-timer 84

loop-protect transmit-interval 85

loop-protect trap loop-detected 85

loop-protect vlan 86

show loop-protect 87

MVRP 90

MVRP functionality and limitations 90

MRP messages 91

AOS-CX 10.13 Layer-2 Bridging Guide | 4100i, 6000, 6100, 6200 Switch Series 5

Join message 91

New message 91

Leave message 92

LeaveAll message 92

Configuring MVRP 92

MVRP scenario 1 93

MVRP scenario 2 97

MVRP commands 104

clear mvrp statistics 104

mvrp 105

mvrp registration 105

mvrp timer 106

show mvrp config 107

show mvrp state 108

show mvrp statistics 109

Spanning tree protocols (STP) 111

Protocols and feature details 111

STP 111

Root bridge 111

Root port 111

Designated bridge and designated port 111

Path cost 112

STP timers 112

BPDU forwarding mechanism 113

STP protocol packets 113

Comparing spanning tree options 114

Preparing for spanning tree configuration 114

STP cost calculation 115

Simplified calculation overview 115

Calculation example 116

STP supported platforms and scale 121

Scale 121

MSTP protocol and feature details 121

MSTP key concepts 122

MSTP configuration tasks 125

MSTP considerations and best practices 126

MSTP use cases 127

MSTP use case: Preventing loops 127

MSTP use case: Deterministic root bridges 130

Switch A configuration 131

Switch B configuration 131

Switch C and D configuration 132

Checking the configuration 132

Observe port behavior and state 133

MSTP use case: BPDU protection 135

MSTP use case: Root protection 137

MSTP use case: Spanning tree on edge ports 140

MSTP commands 143

clear spanning-tree statistics 143

show spanning-tree 143

show spanning-tree detail 144

show spanning-tree inconsistent-ports 146

show spanning-tree mst 147

show spanning-tree mst-config 149

show spanning-tree mst detail 150

Contents |6

show spanning-tree mst <INSTANCE-ID> 153

show spanning-tree mst <INSTANCE-ID> detail 154

show spanning-tree mst interface 156

show spanning-tree summary port 156

show spanning-tree summary root 157

spanning-tree 158

spanning-tree bpdu-filter 159

spanning-tree bpdu-guard 160

spanning-tree bpdu-guard timeout 161

spanning-tree config-name 161

spanning-tree config-revision 162

spanning-tree cost 163

spanning-tree forward-delay 164

spanning-tree hello-time 165

spanning-tree instance cost 166

spanning-tree instance port-priority 167

spanning-tree instance priority 168

spanning-tree instance vlan 168

spanning-tree link-type 169

spanning-tree loop-guard 170

spanning-tree max-age 171

spanning-tree max-hops 172

spanning-tree mode 173

spanning-tree port-priority 174

spanning-tree port-type 175

spanning-tree priority 176

spanning-tree root-guard 177

spanning-tree rpvst-filter 178

spanning-tree rpvst-guard 179

spanning-tree tcn-guard 179

spanning-tree transmit-hold-count 180

spanning-tree trap 181

MSTP debugging and troubleshooting 183

MSTP FAQ 184

RPVST+ protocol and feature details 186

RPVST+ vPorts 189

RPVST+ configuration tasks 190

Viewing RPVST+ information 192

RPVST+ Considerations and best practices 192

RPVST+ use cases 194

RPVST+ use case: Deterministic root bridges 194

Switch A configuration 195

Switch B configuration 196

Switch C and D configuration 196

Checking the configuration 197

Observe port behavior and state 197

RPVST+ use case: BPDU protection 200

RPVST+ use case: Root protection 203

RPVST+ use case: Spanning tree on edge ports 205

RPVST+ use case: Preventing loops 206

RPVST+ commands 209

clear spanning-tree statistics 209

show capacities rpvst 209

show capacities-status rpvst 210

show spanning-tree 211

show spanning-tree detail 212

AOS-CX 10.13 Layer-2 Bridging Guide | 4100i, 6000, 6100, 6200 Switch Series 7

show spanning-tree inconsistent-ports 213

show spanning-tree summary port 214

show spanning-tree summary root 215

show spanning-tree vlan 216

show spanning-tree vlan detail 217

spanning-tree bpdu-guard timeout 219

spanning-tree extend-system-id 219

spanning-tree ignore-pvid-inconsistency 220

spanning-tree link-type 221

spanning-tree mode 222

spanning-tree pathcost-type 224

spanning-tree rpvst-mstp interconnect vlan 225

spanning-tree tcn-guard 225

spanning-tree vlan 226

spanning-tree vlan cost 227

spanning-tree vlan port-priority 228

spanning-tree trap 229

RPVST+ debugging and troubleshooting 232

RPVST+ FAQ 233

UDLD 234

Configuring UDLD 235

UDLD scenario 236

UDLD commands 238

clear udld statistics 238

show udld 238

udld 240

udld interval 241

udld mode 243

udld retries 245

Private VLAN 246

Private VLAN commands 251

diag-dump private-vlan basic 251

private-vlan 251

private-vlan port-type 253

show capacities private-vlan 254

show capacities-status private-vlan 255

show private-vlan 256

show private-vlan association 257

show private-vlan inconsistency 258

show private-vlan port-type 260

show running-configuration private-vlan 260

show tech private-vlan 261

Support and Other Resources 264

Accessing Aruba Support 264

Accessing Updates 265

Aruba Support Portal 265

My Networking 265

Warranty Information 265

Regulatory Information 265

Documentation Feedback 266

Chapter 1

About this document

This document describes features of the AOS-CX network operating system. It is intended for

administrators responsible for installing, configuring, and managing Aruba switches on a network.

Applicable products

This document applies to the following products:

nAruba 4100i Switch Series (JL817A, JL818A)

nAruba 6000 Switch Series (R8N85A, R8N86A, R8N87A, R8N88A, R8N89A, R9Y03A)

nAruba 6100 Switch Series (JL675A, JL676A, JL677A, JL678A, JL679A)

nAruba 6200 Switch Series (JL724A, JL725A, JL726A, JL727A, JL728A, R8Q67A, R8Q68A, R8Q69A, R8Q70A,

R8Q71A, R8V08A, R8V09A, R8V10A, R8V11A, R8V12A, R8Q72A, JL724B, JL725B, JL726B, JL727B, JL728B,

S0M81A, S0M82A, S0M83A, S0M84A, S0M85A,S0M86A, S0M87A, S0M88A, S0M89A, S0M90A,

S0G13A, S0G14A, S0G15A, S0G16A, S0G17A)

Latest version available online

Updates to this document can occur after initial publication. For the latest versions of product

documentation, see the links provided in Support and Other Resources.

Command syntax notation conventions

Convention Usage

example-text Identifies commands and their options and operands, code examples,

filenames, pathnames, and output displayed in a command window. Items

that appear like the example text in the previous column are to be entered

exactly as shown and are required unless enclosed in brackets ([ ]).

example-text In code and screen examples, indicates text entered by a user.

Any of the following:

n<example-text>

nexample-text

Identifies a placeholder—such as a parameter or a variable—that you must

substitute with an actual value in a command or in code:

nFor output formats where italic text cannot be displayed, variables

are enclosed in angle brackets (< >). Substitute the text—including

the enclosing angle brackets—with an actual value.

nFor output formats where italic text can be displayed, variables

might or might not be enclosed in angle brackets. Substitute the

text including the enclosing angle brackets, if any, with an actual

value.

AOS-CX 10.13 Layer-2 Bridging Guide 8

About this document |9

Convention Usage

|Vertical bar. A logical OR that separates multiple items from which you can

choose only one.

Any spaces that are on either side of the vertical bar are included for

readability and are not a required part of the command syntax.

{ } Braces. Indicates that at least one of the enclosed items is required.

[ ] Brackets. Indicates that the enclosed item or items are optional.

…or

...

Ellipsis:

nIn code and screen examples, a vertical or horizontal ellipsis indicates an

omission of information.

nIn syntax using brackets and braces, an ellipsis indicates items that can be

repeated. When an item followed by ellipses is enclosed in brackets, zero

or more items can be specified.

About the examples

Examples in this document are representative and might not match your particular switch or

environment.

The slot and port numbers in this document are for illustration only and might be unavailable on your

switch.

Understanding the CLI prompts

When illustrating the prompts in the command line interface (CLI), this document uses the generic term

switch, instead of the host name of the switch. For example:

switch>

The CLI prompt indicates the current command context. For example:

switch>

Indicates the operator command context.

switch#

Indicates the manager command context.

switch(CONTEXT-NAME)#

Indicates the configuration context for a feature. For example:

switch(config-if)#

Identifies the interface context.

Variable information in CLI prompts

In certain configuration contexts, the prompt may include variable information. For example, when in

the VLAN configuration context, a VLAN number appears in the prompt:

switch(config-vlan-100)#

When referring to this context, this document uses the syntax:

switch(config-vlan-<VLAN-ID>)#

Where <VLAN-ID> is a variable representing the VLAN number.

Identifying switch ports and interfaces

AOS-CX 10.13 Layer-2 Bridging Guide | 4100i, 6000, 6100, 6200 Switch Series 10

Physical ports on the switch and their corresponding logical software interfaces are identified using the

format:

member/slot/port

On the 4100i Switch Series

nmember: Always 1. VSF is not supported on this switch.

nslot: Always 1. This is not a modular switch, so there are no slots.

nport: Physical number of a port on the switch.

For example, the logical interface 1/1/4 in software is associated with physical port 4 on the switch.

On the 6000 and 6100 Switch Series

nmember: Always 1. VSF is not supported on this switch.

nslot: Always 1. This is not a modular switch, so there are no slots.

nport: Physical number of a port on the switch.

For example, the logical interface 1/1/4 in software is associated with physical port 4 on the switch.

On the 6200 Switch Series

nmember: Member number of the switch in a Virtual Switching Framework (VSF) stack. Range: 1 to 8.

The primary switch is always member 1. If the switch is not a member of a VSF stack, then member is

1.

nslot: Always 1. This is not a modular switch, so there are no slots.

nport: Physical number of a port on the switch.

For example, the logical interface 1/1/4 in software is associated with physical port 4 in slot 1 on

member 1.

Chapter 2

Introduction

Switches use network bridging to facilitate the interconnection of local area networks (LANs) so that

traffic can be exchanged between devices. Bridging occurs at layer 2 of the OSI model.

When creating network bridges on HPE switches, network administrators can configure MAC addressing,

VLANs, and various loop prevention protocols.

Devices on a network are identified by their MAC address. The switch maintains a MAC address table

where it stores information about the other Ethernet interfaces to which a switch is connected. The table

enables the switch to send outgoing data (Ethernet frames) on the specific port required to reach its

destination, instead of broadcasting the data on all ports (flooding).

VLANs are primarily used to provide network segmentation at layer 2. VLANs enable the grouping of

users by logical function instead of physical location. Layer 2 VLANs can be associated with a single

physical port, or multiple aggregated ports (referred to as LAG, short form for Link Aggregation). Link

Aggregation enables a logical grouping of individual interfaces to function as a single, higher-speed link,

providing dramatically increased bandwidth. This mechanism provides network resiliency when

individual link failures occur. Aruba switches include advanced network resiliency through MCLAG (Multi

Chassis Link Aggregation) which offers network resiliency on individual device failure as well. MCLAG is

not supported in the 6000 and 6100 Switch Series.

When multiple individual links are connected to one another, there is a possibility that multiple paths

(loops) will exist between devices. Loops reduce network operational efficiency. AOS-CX provides several

features to detect and avoid loops, including:

nMSTP: Multiple-Instance spanning tree protocol (MSTP) ensures that only one active path exists

between any two nodes in a spanning tree instance. A spanning tree instance comprises a unique set

of VLANs, and belongs to a specific spanning tree region. A region can comprise multiple spanning

tree instances (each with a different set of VLANs), and allows one active path among regions in a

network.

nRPVST+: Rapid Per VLAN Spanning Tree+ (RPVST+) is an updated implementation of STP (Spanning

Tree Protocol). It enables the creation of a separate spanning tree for each VLAN on a switch, and

ensures that only one active, loop-free path exists between any two nodes on a given VLAN.

nLoop Protection: In cases where spanning tree protocols cannot be used to prevent loops at the edge

of the network, loop protection may provide a suitable alternative. Loop protection can find loops in

untagged layer 2 links, as well as on tagged VLANs.

AOS-CX also supports the MVRP (Multiple VLAN Registration Protocol), a registration protocol defined by

IEEE, which propagates VLAN information dynamically across devices. It also enables devices to learn

and automatically synchronize VLAN configuration information, reducing the configuration workload.

Additionally, AOS-CX supports the Unidirectional Link Detection (UDLD) protocol. UDLD monitors the link

between two network devices, and if the link fails, blocks the ports on both ends of the link. UDLD is

useful for detecting failures in fiber links and trunks.

AOS-CX 10.13 Layer-2 Bridging Guide 11

Chapter 3

MAC address table

The MAC address table is where the switch stores information about the other Ethernet interfaces to

which it is connected on a network. The table enables the switch to send outgoing data (Ethernet

frames) on the specific port required to reach its destination, instead of broadcasting the data on all

ports (flooding).

The MAC address table can contain two types of entries:

nStatic: Static entries are manually added to the table by a switch administrator. Static entries have

higher priority than dynamic entries. Static entries remain active until they are removed by the switch

administrator.

nDynamic: Dynamic entries are automatically added to the table through a process called MAC

learning, in which the switch retrieves the source MAC address (and VLAN ID, if present) of each

Ethernet frame received on a port. If the retrieved address does not exist in the table, it is added.

Dynamic entries remain in the table for a predetermined amount of time (defined with the command

mac-address-table age-time), after which they are automatically deleted.

Dynamic MAC address learning does not distinguish between illegitimate and legitimate frames, which

can invite security hazards. When Host A is connected to port A, a MAC address entry will be learned for

the MAC address of Host A (for example, MAC A). When an illegal user sends frames with MAC A as the

source MAC address to port B, the device performs the following operations:

1. Learns a new MAC address entry with port B as the outgoing interface and overwrites the old

entry for MAC A.

2. Forwards frames destined for MAC A out of port B to the illegal user.

As a result, the illegal user obtains the data of Host A. To improve the security for Host A, manually

configure a static entry to bind Host A to port A. Then, the frames destined for Host A are always sent

out of port A. Other hosts using the forged MAC address of Host A cannot obtain the frames destined

for Host A.

For example, in the following topology, switch A learns the MAC addresses of ports on switch B, C, and D.

This way, traffic between any two switches is not broadcast to the other switches. For example, if server

1 sends traffic to server 3, it does not get broadcast onto the link to switch C, only on the link to switch D.

AOS-CX 10.13 Layer-2 Bridging Guide 12

MAC address table |13

MAC address table commands

clear mac-address

clear mac-address {interface <INTERFACE> | port <PORT-NUM> [vlan <VLAN-ID>] | vlan <VLAN-

ID> [port <PORT-NUM>] | <MAC-ADDR> [vlan <VLAN-ID>] [force]| <mac-address mac-move

[address <mac-address> vlan <vlan>] | [vlan <VLAN>]

<VLAN-ID>]}

Description

Clears the dynamic learned MAC addresses on the specified interface, combination of interface and

VLAN, port, VLAN, combination of port and VLAN, MACaddress, or combination of MAC address and

VLAN. The command does not clear any port-security learned MAC addresses.

Port-security MACaddresses are cleared when the port on which the MAC addresses were learned are

shut down or the port-access-security feature is disabled on the port or the switch.

Parameter Description

<INTERFACE> Specifies the list of interfaces, for example, 1/1/1 or 1/1/1-

1/1/3 or lag1 or vxlan1.

<PORT-NUM> Specifies a physical port on the switch. Format:

member/slot/port.

<VLAN-ID> Specifies the number of a VLAN.

<MAC-ADDR> Specifies the MACaddress.

<mac-address mac-move> Clears the MAC move count and move history for a specified list

or range of VLANs, or for a specific MAC address and VLANs.

AOS-CX 10.13 Layer-2 Bridging Guide | 4100i, 6000, 6100, 6200 Switch Series 14

Parameter Description

When the MAC address and VLANs are not mentioned, the

statistics for all MAC addresses are cleared.

force Clears the specified MAC address even if the MAC address is

internally programmed by MAC management.

Examples

Clearing the learned MAC addresses on a port:

switch# clear mac-address port 1/1/1

Clearing the learned MAC addresses on a combination of a VLAN and a port:

switch# clear mac-address port 1/1/1 vlan 20

switch# clear mac-address vlan 2 port 1/1/3

Clearing the learned MAC addresses on a combination of a VLAN and an interface or a list of interfaces:

switch# clear mac-address interface 1/1/1 vlan 10

switch# clear mac-address vlan 1 interface 1/1/1-1/1/3

Clearing the specified MAC addresses entry on the VLAN:

switch# clear mac-address 14:FA:01:F1:8B:8F vlan 1

Clearing the specified MAC addresses entry by force:

switch# clear mac-address 14:FA:01:F1:8B:8F force

Clearing the learned MAC move addresses on a port:

switch# clear mac-address mac-move

Clearing the learned MAC move addresses on a combination of a VLAN and an interface or a list of

interfaces:

switch# clear mac-address mac-move address 00:00:00:00:00:01 vlan 10

Clearing the MAC move addresses entries on the VLAN:

MAC address table |15

switch# clear mac-address mac-move vlan 10-20

Command History

Release Modification

10.13 The mac-address mac-move parameter was introduced.

10.09 Added parameters for interface and MAC address.

10.07 or earlier --

Command Information

Platforms Command context Authority

All platforms Manager (#)Administrators or local user group members with execution rights

for this command.

clear mac-address-table

address <mac-address>

vlan <1-4094>

Description

This command is used to clear the MAC move count and move history for a single MAC address or

VLAN, or for a range of VLANs. If no specific MAC address or VLAN is specified, this command clears

statistics for all MAC addresses.

Parameter Description

address (Optional) Clear information for a specific MAC address.

vlan <1-4094> (Optional) Clear move information for specific VLAN.

Examples

Clearing MAC move statistics for all MAC addresses.

switch# clear mac-address mac-move

Clearing MAC move statistics for MAC addresses in a range of VLANs.

switch# clear mac-address mac-move vlan 10-20

Clearing MAC move addresses from a specific MAC address and VLAN:

switch# clear mac-address mac-move address 00:00:00:00:00:01 vlan 10

AOS-CX 10.13 Layer-2 Bridging Guide | 4100i, 6000, 6100, 6200 Switch Series 16

Command History

Release Modification

10.13 or earlier Command introduced.

Command Information

Platforms Command context Authority

All platforms Operator (>) or Manager

(#)

Operators or Administrators or local user group members with

execution rights for this command. Operators can execute this

command from the operator context (>) only.

mac-address-table age-time

mac-address-table age-time <SECONDS>

no mac-address-table age-time [<SECONDS>]

Description

Sets the maximum amount of time a MAC address remains in the MAC address table. When this time

expires, the MAC address is removed.

The no form of this command resets the MAC aging timer to the default value (300 seconds).

Parameter Description

age-time <SECONDS> Specifies the MAC address aging time in seconds. Range: 60 to

3600. Default: 300.

Example

switch(config)# mac-address-table age-time 120

Command History

Release Modification

10.07 or earlier --

Command Information

Platforms Command context Authority

All platforms config Administrators or local user group members with execution rights

for this command.

show mac-address-table

Description

MAC address table |17

Shows MAC address table information.

Examples

Showing output when table entries exist:

switch# show mac-address-table

MAC age-time : 300 seconds

Number of MAC addresses : 5

MAC Address VLAN Type Port

--------------------------------------------------

00:00:00:00:00:05 1 dynamic 1/1/2

00:00:00:00:00:06 2 dynamic 1/1/1

Showing output that includes information about an IPv6 VXLAN:

3C-T-6300-27# show mac-address-table

MAC age-time : 300 seconds

Number of MAC addresses : 2

MAC Address VLAN Type Port

--------------------------------------------------------------

00:50:56:8d:44:13 1001 dynamic 1/1/2

00:50:56:8d:45:63 1002 evpn vxlan1(1920:1680:1:1::2)

Showing output when there are no MAC table entries:

switch# show mac-address-table

No MAC entries found.

Command History

Release Modification

10.07 or earlier --

Command Information

Platforms Command context Authority

All platforms Operator (>) or Manager

(#)

Operators or Administrators or local user group members with

execution rights for this command. Operators can execute this

command from the operator context (>) only.

show mac-address-table address

show mac-address-table address <MAC-ADDR>

Description

Shows MAC address table information for a specific MAC address.

AOS-CX 10.13 Layer-2 Bridging Guide | 4100i, 6000, 6100, 6200 Switch Series 18

Parameter Description

<MAC-ADDR> Specifies the MAC address.

Example

switch# show mac-address-table address 00:00:00:00:00:01

MAC age-time : 300 seconds

Number of MAC addresses : 2

MAC Address VLAN Type Port

--------------------------------------------------

00:00:00:00:00:01 2 dynamic 1/1/1

00:00:00:00:00:01 1 dynamic 1/1/1

Command History

Release Modification

10.07 or earlier --

Command Information

Platforms Command context Authority

All platforms Operator (>) or Manager

(#)

Operators or Administrators or local user group members with

execution rights for this command. Operators can execute this

command from the operator context (>) only.

show mac-address-table count

[dynamic | port <PORT-NUM> | vlan <VLAN-ID>]

Description

Displays the number of MAC addresses.

Parameter Description

dynamic Show the count of dynamically learned MAC addresses.

<PORT-NUM> Specifies a physical port on the switch. Format:

member/slot/port.

vlan <VLAN-ID> Specifies the number of a VLAN.

Examples

Showing the number of MAC addresses:

switch# show mac-address-table count

Number of MAC addresses : 8

MAC address table |19

Showing the number of dynamically learned MAC addresses:

switch# show mac-address-table count dynamic

Number of MAC addresses : 8

Showing the number of MAC addresses per physical port on the switch:

switch# show mac-address-table count port 1/1/1

Number of MAC addresses : 2

Showing the number of MAC addresses per VLAN:

switch# show mac-address-table count vlan 100

Number of MAC addresses : 5

Command History

Release Modification

10.07 or earlier --

Command Information

Platforms Command context Authority

All platforms Operator (>) or Manager

(#)

Operators or Administrators or local user group members with

execution rights for this command. Operators can execute this

command from the operator context (>) only.

show mac-address-table dynamic

show mac-address-table dynamic [port <PORT-NUM> | vlan <VLAN-ID>]

Description

Shows MAC address table information about dynamically learned MAC addresses.

Parameter Description

<PORT-NUM> Specifies a physical port on the switch. Format:

member/slot/port.

<VLAN-ID> Specifies the number of a VLAN.

Examples

Showing all dynamic MAC address table entries:

switch# show mac-address-table dynamic

MAC age-time : 300 seconds

Number of MAC addresses : 2

AOS-CX 10.13 Layer-2 Bridging Guide | 4100i, 6000, 6100, 6200 Switch Series 20

MAC Address VLAN Type Port

--------------------------------------------------

00:00:00:00:00:05 1 dynamic 1/1/2

00:00:00:00:00:06 2 dynamic 1/1/1

Showing dynamic MAC address table entries for VLAN 1:

switch# show mac-address-table dynamic vlan 1

MAC age-time : 300 seconds

Number of MAC addresses : 1

MAC Address VLAN Type Port

--------------------------------------------------

00:00:00:00:00:05 1 dynamic 1/1/2

Showing dynamic MAC address table entries for port 1/1/1:

switch# show mac-address-table dynamic port 1/1/1

MAC age-time : 300 seconds

Number of MAC addresses : 1

MAC Address VLAN Type Port

--------------------------------------------------

00:00:00:00:00:06 2 dynamic 1/1/1

Command History

Release Modification

10.07 or earlier --

Command Information

Platforms Command context Authority

All platforms Operator (>) or Manager

(#)

Operators or Administrators or local user group members with

execution rights for this command. Operators can execute this

command from the operator context (>) only.

show mac-address-table interface

show mac-address-table interface <INTERFACE>

Description

Shows the MAC address table entries for the specified interface.

Parameter Description

<INTERFACE> Specifies an interface or a list of interfaces on the switch.

Examples

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