02-16-2014
Same IP | Different port | Different MAC
Hello all,
I meet a "strange" situation, at least for me, and i want your opinion.
I have a node used as SIP B2BUA (node A) and i have the following issue.
SIP messages does not reach a client node (node B) but ICMP do.
I see in the pcap that SIP and ICMP messages have different destination MAC address. Only ICMP messages have destination MAC address the MAC of node B.
OS: rhel 6.2
arp table show the MAC of node B.
Any idea?What should i check??
Thanks in advance!
Last edited by @dagio; 02-16-2014 at 11:54 AM..
6 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Please, can someone tell me why my SunBlade would be showing 2 different but similar MAC addresses on the same port on the Switch? The switch shows all other Workstations with 1 MAC on each port, but the SunBlade is showing 2. Thanks in advance for any insight.... (1 Reply)
Discussion started by: GoneCrazy
1 Replies
2. Solaris
Hi Everyone,
In my environment, I have few T5220. On the iLOM Management Card, I have both Network and Serial port are cabled, I don't have any issues while I try to connect using Network Management port, but when I try to connect the serial port for the same server which is actually connected... (3 Replies)
Discussion started by: bobby320
3 Replies
3. IP Networking
i want to kill a tcp connection by killing its pid
with netstat -an i got the tcp ip connection on port 5914
but when i type ps -a or ps-e there is not such process running on port 5914
is it possible that because i do not log on with proper user account i can not see that process running? (30 Replies)
Discussion started by: alinamadchian
30 Replies
4. Solaris
Hello,
I have an unloaded T5140 machine and want to access the ILOM for the first time and subsequently the network port after that., and then load Solaris 10 the final January 2011 build.
The first part is what confuses me -the cabling.
I am coming from a Windows machine (w/appropriate... (5 Replies)
Discussion started by: joboy
5 Replies
5. Solaris
please find the below o/p for your reference
bash-3.00# fcinfo hba-port
HBA Port WWN: 21000024ff295a34
OS Device Name: /dev/cfg/c2
Manufacturer: QLogic Corp.
Model: 375-3356-02
Firmware Version: 05.03.02
FCode/BIOS Version: BIOS: 2.02; fcode: 2.01;... (3 Replies)
Discussion started by: sb200
3 Replies
6. UNIX for Beginners Questions & Answers
hi,
i would like to create a bash script that check which port in my Linux server are closed (not in use) from a specific range, port range (3000-3010).
the print output need to be only 1 port, and it will be nice if the output will be saved as a variable or in same file.
my code is:
... (2 Replies)
Discussion started by: yossi
2 Replies
LEARN ABOUT FREEBSD
ng_ether_echo
NG_ETHER_ECHO(4) BSD Kernel Interfaces Manual NG_ETHER_ECHO(4)
NAME
ng_ether_echo -- netgraph ether_echo node type
SYNOPSIS
#include <netgraph/ng_ether_echo.h>
DESCRIPTION
The ether_echo node type reflects all data and control messages back to the sender. It assumes (and does not check) that the packet is an
ethernet frame, and swaps the source and destination addresses before echoing it. This node type is used for testing and debugging.
HOOKS
A ether_echo node accepts any request to connect, regardless of the hook name, as long as the name is unique.
CONTROL MESSAGES
This node type supports only the generic control messages. Any other control messages are reflected back to the sender.
SHUTDOWN
This node shuts down upon receipt of a NGM_SHUTDOWN control message, or when all hooks have been disconnected.
SEE ALSO
netgraph(4), ng_echo(4), ng_ether(4), ng_hole(4), ngctl(8)
HISTORY
The ng_ether_echo node type was implemented in FreeBSD 8.0.
AUTHORS
Julian Elischer <julian@FreeBSD.org>
BSD
December 24, 2008 BSD