network redundancy with software Post: 302075130

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Top Forums UNIX for Advanced & Expert Users network redundancy with software Post 302075130 by Frank2004 on Tuesday 30th of May 2006 11:55:17 PM

05-31-2006

Registered User

network redundancy with software

Here we want to implement the network redundancy on UNIX with the software.
The two network interface cards are configured on the UNIX node,once one card is down or unnormal,the other can take over. Those aplications that used the tcp ,udp,multicast protocol can also been switched at the same time.
The question is :
1. how to monitor the network interface card is falied.(niff daemon might been ok?)
2. How to monitor the network traffic ?(include the switch port)
3. Once find the card failed or network traffic was high, are there any good ideas to switch the application?

If not the above, any other suggestions?
By the way, the above implementation should be finished with the programing instead of hardware.
Thanks

Frank2004

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LEARN ABOUT LINUX

network_namespaces

NETWORK_NAMESPACES(7)					     Linux Programmer's Manual					     NETWORK_NAMESPACES(7)

NAME

       network_namespaces - overview of Linux network namespaces

DESCRIPTION

       Network namespaces provide isolation of the system resources associated with networking: network devices, IPv4 and IPv6 protocol stacks, IP
       routing tables, firewall rules, the /proc/net directory (which is a symbolic link to /proc/PID/net), the /sys/class/net directory,  various
       files  under  /proc/sys/net,  port  numbers  (sockets), and so on.  In addition, network namespaces isolate the UNIX domain abstract socket
       namespace (see unix(7)).

       A physical network device can live in exactly one network namespace.  When a network namespace is freed (i.e., when the last process in the
       namespace terminates), its physical network devices are moved back to the initial network namespace (not to the parent of the process).

       A virtual network (veth(4)) device pair provides a pipe-like abstraction that can be used to create tunnels between network namespaces, and
       can be used to create a bridge to a physical network device in another namespace.  When a namespace is freed, the veth(4) devices  that	it
       contains are destroyed.

       Use of network namespaces requires a kernel that is configured with the CONFIG_NET_NS option.

SEE ALSO

       nsenter(1),  unshare(1),  clone(2),  veth(4),  proc(5),	sysfs(5),  namespaces(7),  user_namespaces(7), brctl(8), ip(8), ip-address(8), ip-
       link(8), ip-netns(8), iptables(8), ovs-vsctl(8)

Linux								    2018-02-02						     NETWORK_NAMESPACES(7)