Cisco VPN 3002 - Manual (Page 238)

13-50
VPN 3002 Hardware Client Reference
OL-1893-01
Chapter 13 Monitoring
Monitoring | Statistics | MIB-II | ICMP
Timestamp Requests Received/Transmitted
The number of ICMP Timestamp (request) messages received/sent. Timestamp messages measure the
propagation delay between network entities by including the originating time in the message, and asking
for the receipt time in a Timestamp Reply message.
Timestamp Replies Received/Transmitted
The number of ICMP Timestamp Reply messages received/sent. Timestamp Reply messages are sent in
response to Timestamp messages, to measure propagation delay in the network.
Address Mask Requests Received/Transmitted
The number of ICMP Address Mask Request messages received/sent. Address Mask Request messages
ask for the address (subnet) mask for the LAN to which a router connects.
Address Mask Replies Received/Transmitted
The number of ICMP Address Mask Reply messages received/sent. Address Mask Reply messages
respond to Address Mask Request messages by supplying the address (subnet) mask for the LAN to
which a router connects.