HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 2 - LAN Switching Co - Page 211
Setting other LLDP parameters, Configuration restrictions and guidelines, Configuration procedure
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Step Command 3. Allow LLDP to advertise the management address in LLDPDUs and configure the advertised lldp management-address-tlv [ ip-address ] management address. 4. Configure the encoding format of the lldp management-address-format management address as string character string. Remarks Optional. By default, the management address is sent through LLDPDUs. The management address is the main IP address of the lowest-ID VLAN carried on the port. If none of the carried VLANs is assigned an IP address, no management address will be advertised. Optional. By default, the management address is encapsulated in the numeric format. Setting other LLDP parameters The Time to Live TLV carried in an LLDPDU determines how long the device information carried in the LLDPDU can be saved on a recipient device. By setting the TTL multiplier, you can configure the TTL of locally sent LLDPDUs, which determines how long information about the local device can be saved on a neighboring device. The TTL is expressed by using the following formula: TTL = Min (65535, (TTL multiplier × LLDPDU transmit interval)) As the expression shows, the TTL can be up to 65535 seconds. TTLs greater than 65535 will be rounded down to 65535 seconds. Configuration restrictions and guidelines • To make sure that LLDP neighbors can receive LLDPDUs to update information about the current device before it ages out, configure both the LLDPDU transmit interval and delay to be less than the TTL. • It is a good practice to set the LLDPDU transmit interval to be no less than four times the LLDPDU transmit delay. • If the LLDPDU transmit delay is greater than the LLDPDU transmit interval, the device uses the LLDPDUs transmit delay as the transmit interval. Configuration procedure To change the TTL multiplier: Step 1. Enter system view. 2. Set the TTL multiplier. Command system-view lldp hold-multiplier value 3. Set the LLDPDU transmit interval. lldp timer tx-interval interval 4. Set the LLDPDU transmit delay. lldp timer tx-delay delay 202 Remarks N/A Optional. 4 by default. Optional. 30 seconds by default. Optional. 2 seconds by default.