As of LCOS 10.20, the IP router Trace only displays forwarded packets.These are packets that are not from the router itself, but from other devices in the network (LAN or WAN).
Packets originating from the router itself (eg if a ping is issued by the router itself) are displayed in the newly implemented IPv4 host trace.
The IPv4 host trace can be initiated either through the console using the tr # IPv4 Host command or through the LANtracer by ticking IPv4 host.
Info: Tracing via the LANtracer is described in the following article in our Knowledgebase: Image Removed
Example of the IPv4 host Trace: Ping the router to an IP address on the LAN:
The ping is sent from one LAN interface of the router (source) to the IP address of a client in another local network (destination):
Codeblock
[IPv4-Host]2018/12/0310:40:47,602[#Loopback(1)]
IPpacket,scopeglobal,routingtag0:
InternetProtocolVersion4
Headerlength:20
Totallength:84
Payloadlength:64
DiffServfield:0x00(DSCP:CS0,ECN:Not-ECT)
Identification:0x716d
Flags:0x0000
Fragmentoffset:0
Timetolive:64
Protocol:ICMP(1)
Headerchecksum:0xffff
Source:10.0.0.254
Destination:192.168.45.178
InternetControlMessageProtocol
Type:Echo(ping)request(8)
Code:0
Checksum:0x0000
Identifier:5
Sequencenumber:0
-->ForwardedpackettoINTRANET(4)
Der Ping wird vom Client beantwortet und wird vom Router an das anfragende Interface zurückgegeben (Loopback).