Comtech EF Data CDD-562L - Manual (Page 150)

CDD-562L/564 Demodulator with IP Module Revision 2
CDD-56X CLI and Telnet Operation MN/CDD564L.IOM
8–46
Packet Item Description
Dropped – Bad IP Version Total Dropped IP Version 6 Packets (IP Module only supports IP Version 4).
Dropped – TTL Expired
Total Dropped Packets due to Time To Live counter expired (TTL limits the
number of hops, or seconds, before a packet reaches it’s destination).
Dropped – No Route
Total Dropped Packets due to no Route for the destination in the IP Module
Route Table. These are packets that are directed to the IP Module’s MAC
address and the IP Module will reply to the sender with a ICMP ‘Destination net
unreachable’ message.
Dropped - No ARP Entry
Total Dropped Packets due to no ARP entry in IP Module ARP Table. For
example, if a IP Module receives packets from the satellite for a host that is not
in the ARP table, the IP Module will send an ARP request. If there is no
response, the packets will be dropped.
Dropped – Filtered Multicast
Total Dropped Multicast Packets received from the satellite due to no
SAT
→LAN or
Dropped – Multicast Disable
Group
Multicast packet was dropped because, although route existed, IGMP is being
used, and there is no client requesting forwarding of this traffic or due to a IGMP
“leave group” message.
Dropped – Router Queue Full
Indicates that the router task is dropping packets due to being full. Represents a
graceful drop process when the processor performance is being overdriven.
Dropped – Total Total Dropped Packets
Additionally, management of the information reported on this page is provided:
Selection Entry Description
Reset All Counters C
Executing this menu option resets all gathered WAN, Ethernet and IP
Routing statistics gathered to zero.