Comtech EF Data SLM-5650A Installation And Operation Manual page 211

SLM-5650A Satellite Modem
Network Processor (NP) Interface
Router Errors
Item
Bad Header Packets
Bad Total Length Packets
TTL Expired Packets
No Route Packets
Length Too Small Packets
Bad Header Protocol Packets
Bad Header Checksum
Packets
Bad Header Destination
Address Packets
Internal Procesing Error
Packets
End Station Statistics
Item
Received Packets
Forwarded Packets
Local Delivery Packets
Created Fragment Packets
End Station Errors
Item
Invalid Header Packets
Invalid Address Packets
No Route Packets
Description
Counts the packets received with IP header length are less than 20 bytes OR
IPV4 version is NOT 4. This only applicable in non-switch mode.
This Counter will be updated if the ingress packet total length (PACKET_SIZE)
less than the Ethernet header size (if present, only from LAN and END station)
and total length in IPV4 total length filed. This is only applicable in non-switch
mode.
If the IPV4 packet received with TTL zero and need to be forwarded. This is
only applicable in non-switch mode.
Counts the packets received with IPV4_DEST_ADDR has no match in Route
Table. This is only applicable in non-switch mode.
Counter will be updated if, total length filed in IPV4 header is less than 20 bytes
OR PACKET_SIZE is less than 20. This is only applicable in non-switch mode.
If incoming packet has Ethernet type was not IPV4, IPv6, ARP, PPP_SESSION,
or PPP_DISCOVERY and non-switch mode. In switch mode it accepts all the
Ethernet types.
Counts the packets received with bad IPV4 header checksum. This is only
applicable in non-switch mode.
The counter will be updated, if the IPV4 destination address is either
255.255.255.255, or 0.X.X.X, or 127.X.X.X, or (224-255).X.X.X. This is only
applicable in non-switch mode.
Non Switch mode: This counter will updated if, the Ingress packet cannot
traverse with in the ME components due to resources scarcity.
Switch mode: This counter will be update if either the ingresses packet
destination MAC address is NP's MAC, but the IP address is NOT the NP's IP,
or ingress packet cannot traverse within the MEs components due to internal
resources scarcity.
Description
Total packets destined to the NP Interface.
Total packets forwarded by router.
Number of packets delivered to management applications running on the NP
Interface.
Number of IP fragments created by the NP Interface because the packet being
sent exceeds the maximum transmit unit (MTU).
Description
Total End Station packets dropped due to incorrect length or IP Header
Checksum.
Number of IP packets dropped by the NP Interface because of an invalid
destination address.
Number of IP Packets dropped by the NP Interface because no "route
destinatioon" matched in the rout table.
8–49
Revision 8
MN-SLM5650A