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Dshell Troubleshooting BOOTP/DHCP/UDP Relay
page 5-6 OmniSwitch Troubleshooting Guide September 2005
Dshell
To send the UDP Relay debug to the console, follow the following commands:
Note. Dshell commands should only be used by Alcatel personnel or under the direction of Alcatel.
Misuse or failure to follow procedures that use Dshell commands in this guide correctly can cause lengthy
network down time and/or permanent damage to hardware.
• Use the command udprelay_do_systrace = 0 to disable systrace and enable console output.
• Use the command C = x (where x=1 to 9.) This increases the levels of udprelay debug. A level of 5
will display the source, destination IP, and MAC lines seen below. A level of 8 will include the hex
dump of the packet. In addition, this level is very CPU intensive and will delay the UDP function. A
level of 9 displays all packets as well as IPC messages. At this time running a level of 9 uses up so
much of the UDP function that the relay agent can not pass traffic. A level of 9 is not recommended.
• And to turn it off use the udprelayDebugLevelCMM = -1 command.
The following is a sample UDP relay debug session:
enqueue_to_ip_using_ipc: Packet sent to IP using IPC
handle_event_udprelay_cmm(): Received on bsd socket
handle_event_bsd_udprelay_cmm: Recieved message from the bsd socket Received 284
bytes from bsd
socket 0x1a
We got in a tweaked zero IP address packet on bsd socket
Recvd on bsd socket pkt from 0.0.0.0, rtr-port addr=192.168.20.254, 0x-1062726402
Received short packet from bsd socket from 192.168.20.254, len=284 bytesReceived
request packet
for the bootp service on bsd socket BOOTP REQ: secs=0 hops=0x0
BOOTP REQ: Haven't waited long enough: secs=0 s/b >= 3
handle_event_udprelay_cmm(): received on ipc socket
handle_event_ipc_udprelay_cmm: num of bytes received = 352
handle_event_ni_udprelay_cmm: Recieved message from the NI
handle_event_ni_udprelay_cmm: Recieved message from the NI for regular UDP packet
hex_dump_udprelay_cmm: Printing the buffer at address = 0x60c3b10
00
03 00 01 01 5d 0e 70 50 -- 31 20 30 01 4a 00 00 00
14 60 14 41 00 ff ff ff -- ff ff ff 00 0b 85 03 07
f0 81 00 00 14 08 00 45 -- 00 01 38 4d cb 40 00 20
11 0b eb 00 00 00 00 ff -- ff ff ff 00 44 00 43 01
24 9e a6 01 01 06 00 73 -- 02 3f 32 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
0b 85 03 07 f0 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 -- 00 00 00 00 00 00 00 00