User's Manual

186 APCD-LM043-4.0
In the above example, the default route is defined by:
Destination Mask TOS Gateway Flags RefCnt Use Interface Proto
0.0.0.0 0 0 10.0.0.1 803 0 196587 esmc0 1
Any IP packet with a destination which is not listed in the Routing Table will be forwarded
through the Ethernet port (IP address 10.0.0.1) and on to the NAP router.
The radio subnet route is defined by:
Destination Mask TOS Gateway Flags RefCnt Use Interface Proto
10.5.0.0 ffff0000 0 10.5.0.1 101 0 0 rdr1 0
Any IP packet destined for the radio subnet (any IP address starting with 10.5.xx.xx) will be
forwarded through the CCU radio port (IP address 10.5.0.1) and over the radio link to the
EUMs and end-user’s computers.
The loopback route is defined by:
Destination Mask TOS Gateway Flags RefCnt Use Interface Proto
127.0.0.1 0 0 127.0.0.1 5 0 24 lo0 0
Any IP packet destined for 127.0.0.1, which is an IP address reserved for loopback, will be
looped back to the CCU operating system.
The Routing Table flags are summarized in Table 52.
Table 52 Routing Table Flags.
To use Table 52, consider the flag associated with the default route, 803, which is equal to
(800 + 2 +1). Referring to Table 52, this route was manually added, the destination is a
gateway, and the route is usable.
Flag Mask Description
0x1
0x2
0x4
0x8
0x10
0x20
0x40
0x80
0x100
0x200
0x400
0x800
0x1000
0x2000
0x4000
0x8000
Route usable
Destination is a gateway
Host entry (net otherwise)
Host or net unreachable
Created dynamically (by redirect)
Modified dynamically (by redirect)
Message confirmed
Subnet mask present
Generate new routes on use
External daemon resolves name
Generated by ARP or ESIS
Manually added
Just discard packets (during updates)
Protocol specific routing flag
Protocol specific routing flag
Modified by management protocol