Comtech EF Data CDM-570 Installation And Operation Manual page 327

CDM-570/570L Satellite Modem with Optional IP Module
Ethernet IP Module - CLI and Telnet Operation
Selection
Dropped – Bad IP Header
Checksum
Dropped – Bad Buffer
Length
Dropped – Bad IP Version
Dropped – TTL Expired
Dropped – No Route
Dropped – No ARP Entry
Dropped – Filtered
Multicast
Dropped – Multicast
Disable Group
Dropped – Managed
Switch Multicast Option
Dropped – Router Queue
Full
Dropped – Total
Reset All Counters
Entry Description
[RO]
Total Dropped Packets due to incorrect IP Header Checksum.
IP length (as specified in packet header) was greater than payload received in
the Ethernet packet. This would indicate the packet was truncated before
arriving.
Total Dropped IP Version 6 Packets (IP Module only supports IP Version 4).
Total Dropped Packets due to Time To Live counter expired (TTL limits the
number of hops, or seconds, before a packet reaches its destination).
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.
Total Dropped Packets due to no ARP entry in IP Module ARP Table.
For example, if an 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 are dropped.
Total Dropped Multicast Packets received from the satellite due to no
SAT→LAN or
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.
Total Dropped Multicast Packets received from the satellite due to the
'Managed Switch Multicast Option' feature not being enabled in Managed
Switch Mode.
Indicates that the router task is dropping packets due to being full. Represents
a graceful drop process when the processor performance is being overdriven.
Total Dropped Packets
Execute this option to reset all gathered WAN, Ethernet and IP Routing
C
statistics gathered to zero.
14–57
Revision 12
MN/CDM570L.IOM