HP 6125G HP 6125G & 6125G/XG Blade Switches High Availability Configur - Page 43

Enabling DLDP, Setting DLDP mode, Setting the interval to send advertisement packets

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Enabling DLDP To properly configure DLDP on the device, first enable DLDP globally, and then enable it on each port. To enable DLDP: Step 1. Enter system view. 2. Enable DLDP globally. 3. Enter Layer 2 Ethernet interface view. 4. Enable DLDP. Command system-view dldp enable interface interface-type interface-number dldp enable Remarks N/A Globally disabled by default. N/A Disabled on a port by default. NOTE: • DLDP takes effect only on Ethernet interfaces (fiber or copper). • DLDP can detect unidirectional links only after all physical links are connected. Therefore, before enabling DLDP, make sure that optical fibers or copper twisted pairs are connected. Setting DLDP mode DLDP operates in normal or enhanced mode. In normal mode, DLDP does not actively detect neighbors when the corresponding neighbor entries age out. In enhanced mode, DLDP actively detects neighbors when the corresponding neighbor entries age out. To set DLDP mode: Step 1. Enter system view. 2. Set DLDP mode. Command system-view dldp work-mode { enhance | normal } Remarks N/A Optional. Normal by default. Setting the interval to send advertisement packets DLDP detects unidirectional links by sending Advertisement packets. To make sure that DLDP can detect unidirectional links promptly without affecting network performance, set the advertisement interval appropriately depending on your network environment. The interval should be set shorter than one third of the STP convergence time. If the interval is too long, STP loops may occur before unidirectional links are detected and shut down. If the interval is too short, the number of advertisement packets will increase. HP recommends that you use the default interval in most cases. To set the interval to send Advertisement packets: Step 1. Enter system view. Command system-view Remarks N/A 36

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36
Enabling DLDP
To properly configure DLDP on the device, first enable DLDP globally, and then enable it on each port.
To enable DLDP:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable DLDP globally.
dldp enable
Globally disabled by default.
3.
Enter Layer 2 Ethernet
interface view.
interface
interface-type
interface-number
N/A
4.
Enable DLDP.
dldp enable
Disabled on a port by default.
NOTE:
•
DLDP takes effect only on Ethernet interfaces (fiber or copper).
•
DLDP can detect unidirectional links only after all physical links are connected. Therefore, before
enabling DLDP, make sure that optical fibers or copper twisted pairs are connected.
Setting DLDP mode
DLDP operates in normal or enhanced mode.
In normal mode, DLDP does not actively detect neighbors when the corresponding neighbor entries age
out.
In enhanced mode, DLDP actively detects neighbors when the corresponding neighbor entries age out.
To set DLDP mode:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Set DLDP mode.
dldp work-mode
{
enhance
|
normal
}
Optional.
Normal by default.
Setting the interval to send advertisement packets
DLDP detects unidirectional links by sending Advertisement packets. To make sure that DLDP can detect
unidirectional links promptly without affecting network performance, set the advertisement interval
appropriately depending on your network environment. The interval should be set shorter than one third
of the STP convergence time. If the interval is too long, STP loops may occur before unidirectional links
are detected and shut down. If the interval is too short, the number of advertisement packets will increase.
HP recommends that you use the default interval in most cases.
To set the interval to send Advertisement packets:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A