Configuring Lldp; Preventing An Interface From Sending Certain Lldp Messages; Preventing An Interface From Receiving Lldp Messages - HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual

Link Layer Discovery Protocol

Configuring LLDP

12-12
Configuring LLDP
All active interfaces on the ProCurve Secure Router, except for ATM subinter-
faces, automatically send out LLDP messages. (See Table 12-2 on page 12-15
for the default transmit intervals.)
For most networks, the default settings for LLDP are adequate.
If you so choose, you can attempt to minimize overhead or to restrict the
information the router transmits about itself by:

preventing an interface from sending certain LLDP messages

preventing an interface from receiving LLDP messages

altering the intervals for sending LLDP messages
Preventing an Interface from Sending Certain LLDP
Messages
By default, the ProCurve Secure Router sends LLDP messages over all Ether-
net and logical interfaces except ATM subinterfaces, which do not support
LLDP.
These messages include information about the interface and about the local
router:
MAC address
port ID
router model and Secure Router OS software version
router's hostname
system capabilities
network address at which a management process can find the device
You should be cautious about the information that you allow WAN interfaces
to transmit, particularly on routers that connect to an external network. An
unauthorized device can learn a great deal about your system from LLDP
messages.
To restrict an interface from transmitting LLDP messages, move to the con-
figuration mode context for the interface and enter:
Syntax: no lldp send [management-address | port-description | system-capabilities |
system-description | system-name]