User Manual

AT8402 Utility Commands
Page 4 - 49 AT8402 CLI Reference Manual
4.10.11 debug ospf packet
This command enables tracing of OSPF packets received and transmitted by the
switch.
Default disabled
Format
debug ospf packet
Mode Privileged EXEC
Sample outputs of the trace messages are shown below.
<15> JAN 02 11:03:31 10.50.50.1-2 OSPF[46300472]: ospf_debug.c(297)
25430 % Pkt RX - Intf:2/0/48 Src
Ip:192.168.50.2 DestIp:224.0.0.5 AreaId:0.0.0.0 Type:HELLO
NetMask:255.255.255.0 D
esigRouter:0.0.0.0 Backup:0.0.0.0
<15> JAN 02 11:03:35 10.50.50.1-2 OSPF[46300472]: ospf_debug.c(293)
25431 % Pkt TX - Intf:2/0/48 Src
Ip:10.50.50.1 DestIp:192.168.50.2 AreaId:0.0.0.0 Type:DB_DSCR Mtu:1500
Options:E
Flags: I/M/MS Seq:126166
<15> JAN 02 11:03:36 10.50.50.1-2 OSPF[46300472]: ospf_debug.c(297)
25434 % Pkt RX - Intf:2/0/48 Src
Ip:192.168.50.2 DestIp:192.168.50.1 AreaId:0.0.0.0 Type:LS_REQ Length:
1500
<15> JAN 02 11:03:36 10.50.50.1-2 OSPF[46300472]: ospf_debug.c(293)
25435 % Pkt TX - Intf:2/0/48 Src
Ip:10.50.50.1 DestIp:192.168.50.2 AreaId:0.0.0.0 Type:LS_UPD Length:
1500
The following parameters are displayed in the trace message:
TX/RX TX refers to a packet transmitted by the device. RX refers to packets
received by the device.
Intf The interface that the packet came in or went out on. Format used is
slot/port (internal interface number).
SrcIp The source IP address in the IP header of the packet.
DestIp The destination IP address in the IP header of the packet.
AreaId The area ID in the OSPF header of the packet.
Type Could be one of the following:
HELLO – Hello packet
DB_DSCR – Database descriptor
LS_REQ – LS Request
LS_UPD – LS Update
LS_ACK – LS Acknowledge
The remaining fields in the trace are specific to the type of OSPF Packet.
HELLO packet field definitions:
Netmask The netmask in the hello packet.
DesignRouter Designated Router IP address.