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Contents
display dldp
Syntax
display dldp [ interface-type interface-number ] [ | { begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
interface-type interface-number: Specifies a port by its type and number.
|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display dldp to display the DLDP configuration of a port.
If you do not provide the interface-type interface-number argument, this command displays the DLDP configuration of all the DLDP-enabled ports.
Examples
# Display the DLDP configuration of all the DLDP-enabled ports.
<Sysname> display dldp
DLDP global status : enable
DLDP interval : 5s
DLDP work-mode : normal
DLDP authentication-mode : none
DLDP unidirectional-shutdown : auto
DLDP delaydown-timer : 1s
The number of enabled ports is 1.
Interface GigabitEthernet3/0/1
DLDP port state : advertisement
DLDP link state : up
The neighbor number of the port is 1 (the maximum number ever detected is 2).
Neighbor mac address : 0000-0000-0100
Neighbor port index : 79
Neighbor state : two way
Neighbor aged time : 13
Interface GigabitEthernet3/0/1
DLDP port state : disable
DLDP link state : up
The neighbor number of the port is 0.
Table 1 Command output
|
Field |
Description |
|
DLDP global status |
Global DLDP state (enable or disable). |
|
DLDP interval |
Interval to send Advertisement packets (in seconds). |
|
DLDP work-mode |
DLDP mode (enhance or normal). |
|
DLDP authentication-mode |
DLDP authentication mode (none, simple, or md5). |
|
DLDP unidirectional-shutdown |
Port shutdown mode (auto or manual) after unidirectional links are detected. |
|
DLDP delaydown-timer |
Setting of the DelayDown timer. |
|
The number of enabled ports |
Number of the DLDP-enabled ports. |
|
Interface |
Index of a DLDP-enabled port. |
|
DLDP port state |
DLDP state on a port (initial, inactive, active, advertisement, probe, disable, or delaydown). |
|
DLDP link state |
Port state (up or down). |
|
The neighbor number of the port |
Current number of neighbors. |
|
the maximum number ever detected is 2 |
Maximum number of neighbors once detected on the port. This field appears only when the current number of neighbors is different from the maximum number of neighbors once detected. |
|
Neighbor mac address |
MAC address of the neighbor. |
|
Neighbor port index |
Neighbor port index. |
|
Neighbor state |
Neighbor state (unknown, one way, or two way). |
|
Neighbor aged time |
Neighbor aging time. |
display dldp statistics
Syntax
display dldp statistics [ interface-type interface-number ] [ | { begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
interface-type interface-number: Specifies a port by its type and number.
|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display dldp statistics to display the statistics on the DLDP packets passing through a port.
If you do not provide the interface-type interface-number argument, this command displays the statistics on the DLDP packets passing through all the DLDP-enabled ports.
Examples
# Display the statistics on the DLDP packets passing through all the DLDP-enabled ports.
<Sysname> display dldp statistics
Interface GigabitEthernet3/0/1
Packets sent : 142
Packets received : 142
Invalid packets received : 0
Loop packets received : 142
Authentication failed packets received : 0
Valid packets received : 0
Interface GigabitEthernet3/0/2
Packets sent : 0
Packets received : 0
Invalid packets received : 0
Loop packets received : 0
Authentication failed packets received : 0
Valid packets received : 0
Interface GigabitEthernet3/0/5
Packets sent : 0
Packets received : 0
Invalid packets received : 0
Loop packets received : 0
Authentication failed packets received : 0
Valid packets received : 0
Table 2 Command output
|
Field |
Description |
|
Interface |
Port index. |
|
Packets sent |
Total number of DLDP packets sent. |
|
Packets received |
Total number of DLDP packets received. |
|
Invalid packets received |
Number of the invalid packets received. |
|
Loop packets received |
Number of the loopback packets received. |
|
Authentication failed packets received |
Number of the received packets that failed to pass the authentication. |
|
Valid packets received |
Number of the valid packets received. |
dldp authentication-mode
Syntax
dldp authentication-mode { none | { md5 | simple } password }
undo dldp authentication-mode
View
System view
Default level
2: System level
Parameters
none: Specifies the switch not to perform authentication.
md5: Specifies the MD5 authentication mode and sets a plaintext or ciphertext password.
simple: Specifies the simple authentication mode and sets a plaintext or ciphertext password.
password: Sets the password. This argument is case sensitive. It must be a plaintext string of 1 to 16 characters, or a ciphertext string of 33 to 53 characters.
Description
Use dldp authentication-mode to configure DLDP authentication.
Use undo dldp authentication-mode to restore the default.
By default, DLDP authentication is not performed.
To enable DLDP to operate correctly, make sure the DLDP authentication modes and the passwords of both sides of a link are the same.
Examples
# Configure the simple authentication mode and set the plaintext password to abc (assuming that Switch A and Switch B are connected over a DLDP link).
· Configure Switch A:
<SwitchA> system-view
[SwitchA] dldp authentication-mode simple abc
· Configure Switch B:
<SwitchB> system-view
[SwitchB] dldp authentication-mode simple abc
dldp delaydown-timer
Syntax
dldp delaydown-timer time
undo dldp delaydown-timer
View
System view
Default level
2: System level
Parameters
Time: Sets the DelayDown timer in the range of 1 to 5 seconds.
Description
Use dldp delaydown-timer to set the DelayDown timer.
Use undo dldp delaydown-timer to restore the default.
By default, the setting of the DelayDown timer is 1 second.
The DelayDown timer setting applies to all the DLDP-enabled ports.
Examples
# Set the DelayDown timer to 2 seconds.
<Sysname> system-view
[Sysname] dldp delaydown-timer 2
dldp enable
Syntax
dldp enable
undo dldp enable
View
System view, Ethernet interface view, port group view
Default level
2: System level
Parameters
None
Description
Use dldp enable to enable DLDP.
Use undo dldp enable to disable DLDP.
By default, DLDP is disabled both globally and on each port.
· When executed in system view, this command enables/disables DLDP globally.
· When executed in Ethernet interface view, this command enables/disables DLDP on the current port.
· When executed in port group view, this command enables/disables DLDP on all the ports in the port group.
DLDP takes effect on a port only when DLDP is enabled both globally and on the port.
Examples
# Enable DLDP globally and on GigabitEthernet 4/0/1.
<Sysname> system-view
[Sysname] dldp enable
[Sysname] interface gigabitethernet 4/0/1
[Sysname-GigabitEthernet4/0/1] dldp enable
# Enable DLDP globally and for all the ports in port group 1.
[Sysname] dldp enable
[Sysname] port-group manual 1
[Sysname-port-group-manual-1] group-member gigabitethernet 4/0/1 to gigabitethernet 4/0/3
[Sysname-port-group-manual-1] dldp enable
dldp interval
Syntax
dldp interval time
undo dldp interval
View
System view
Default level
2: System level
Parameters
time: Specifies the interval to send Advertisement packets, in the range of 1 to 100 seconds.
Description
Use dldp interval to set the interval to send Advertisement packets.
Use undo dldp interval to restore the default.
By default, the interval to send Advertisement packets is 5 seconds.
This command applies to all DLDP-enabled ports.
Examples
# Set the interval to send Advertisement packets to 20 seconds.
<Sysname> system-view
[Sysname] dldp interval 20
dldp reset
Syntax
dldp reset
View
System view, Ethernet interface view, port group view
Default level
2: System level
Parameters
None
Description
Use dldp reset to reset DLDP state for ports in the DLDP down state to enable them to perform unidirectional link detection.
When executed in system view, this command applies to all the ports in the DLDP down state. When executed in Ethernet interface view, this command applies to the current port. When executed in port group view, this command applies to all the ports in the port group in the DLDP down state.
Related commands: dldp enable and dldp unidirectional-shutdown.
Examples
# Reset DLDP state for all the ports in the DLDP down state.
<Sysname> system-view
[Sysname] dldp reset
# Reset DLDP state for GigabitEthernet 4/0/1 (assuming that GigabitEthernet 4/0/1 is in the DLDP down state).
<Sysname> system-view
[Sysname] interface gigabitethernet 4/0/1
[Sysname-GigabitEthernet4/0/1] dldp reset
# Reset DLDP state for all the ports in port group 1 in the DLDP down state.
<Sysname> system-view
[Sysname] port-group manual 1
[Sysname-port-group-manual-1] group-member gigabitethernet 4/0/1 to gigabitethernet 4/0/3
[Sysname-port-group-manual-1] dldp reset
dldp unidirectional-shutdown
Syntax
dldp unidirectional-shutdown { auto | manual }
undo dldp unidirectional-shutdown
View
System view
Default level
2: System level
Parameters
auto: Configures the port shutdown mode as auto mode, where, when a unidirectional link is detected, the port involved is shut down by DLDP.
manual: Configures the port shutdown mode as manual mode, where, when a unidirectional link is detected, DLDP generates log and traps to prompt you to shut down the involved port instead of doing so automatically.
Description
Use dldp unidirectional-shutdown to set the port shutdown mode.
Use undo dldp unidirectional-shutdown to restore the default.
By default, the port shutdown mode is the auto mode.
Related commands: dldp work-mode.
Examples
# Set the port shutdown mode as auto mode.
<Sysname> system-view
[Sysname] dldp unidirectional-shutdown auto
dldp work-mode
Syntax
dldp work-mode { enhance | normal }
undo dldp work-mode
View
System view
Default level
2: System level
Parameters
enhance: Specifies the enhanced DLDP mode.
normal: Specifies the normal DLDP mode.
Description
Use dldp work-mode to set the DLDP mode.
Use undo dldp work-mode to restore the default DLDP mode.
By default, the switch is operating in normal DLDP mode.
Examples
# Configure the switch to operate in enhanced DLDP mode.
<Sysname> system-view
[Sysname] dldp work-mode enhance
reset dldp statistics
Syntax
reset dldp statistics [ interface-type interface-number ]
View
User view
Default level
1: Monitor level
Parameters
interface-type interface-number: Specifies a port by its type and number.
Description
Use reset dldp statistics to clear the statistics on DLDP packets passing through a port.
If you do not provide the interface-type interface-number argument, this command clears the statistics on the DLDP packets passing through all the DLDP-enabled ports.
Examples
# Clear the statistics on the DLDP packets passing through all the DLDP-enabled ports.
<Sysname> reset dldp statistics
