awk help Post: 302323997

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LEARN ABOUT NETBSD

agr

AGR(4)							   BSD Kernel Interfaces Manual 						    AGR(4)

NAME

     agr -- link aggregation pseudo network interface driver

SYNOPSIS

     pseudo-device agr

DESCRIPTION

     The agr driver provides link aggregation functionality (a.k.a. L2 trunking or bonding).

     It supports the IEEE 802.3ad Link Aggregation Control Protocol (LACP) and the Marker Protocol.

     The agr driver supports the following link specific flags for ifconfig(8):

     link0   Use the round-robin distribution algorithm.  Don't use it unless you're really sure, because it violates the frame ordering rule.

     -link0  Use the default distribution algorithm, which is based on the hash of DA/SA, TCI, and, if available, some upper layer protocol infor-
	     mation like ip(4) DA/SA.

     link1   Disable LACP.  Prevents any LACP or Marker messaging which leaves the ports in the default static configuration.  Set this prior to
	     adding ports.

EXAMPLES

     Create an agr interface, agr0, and attach re0 and re1 to it.  In other words, aggregate re0 and re1 so that they can be used as a single
     interface, agr0.  The physical interfaces which are attached to the agr interface must not have any IP addresses, neither IPv4 nor IPv6.

		   ifconfig re0 inet xxx.xxx.xxx.xxx delete
		   ifconfig re0 inet6 fe80::xxxx:xxxx:xxxx:xxxx delete
		   ifconfig re1 inet xxx.xxx.xxx.xxx delete
		   ifconfig re1 inet6 fe80::xxxx:xxxx:xxxx:xxxx delete

		   ifconfig agr0 create
		   ifconfig agr0 agrport re0
		   ifconfig agr0 agrport re1

     Destroy an interface created in the above example.

		   ifconfig agr0 -agrport re0
		   ifconfig agr0 -agrport re1
		   ifconfig agr0 destroy

SEE ALSO

     ifconfig(8)

STANDARDS

     IEEE 802.3ad Aggregation of Multiple Link Segments

HISTORY

     The agr driver first appeared in NetBSD 4.0.

AUTHORS

     The agr driver was written by YAMAMOTO Takashi.

BUGS

     There is no way to configure LACP administrative variables, including system and port priorities.	The current implementation of the agr
     driver always performs active-mode LACP and uses 0x8000 as system and port priorities.

     The agr driver uses the MAC address of the first-added physical interface as the MAC address of the agr interface itself.	Thus, removing the
     physical interface and using it for another purpose can result in non-unique MAC addresses.

     The current implementation of the agr driver doesn't prevent unsafe operations like some ioctls against underlying physical interfaces.  Such
     operations can result in unexpected behaviors, and are strongly discouraged.

     There is no way to configure agr interfaces without attaching physical interfaces.

     Physical interfaces being added to the agr interface shouldn't have any addresses except for link level address.  Otherwise, the attempt will
     fail with EBUSY.  Note that it includes an automatically assigned IPv6 link-local address.

BSD
								 February 23, 2010							       BSD

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Awk problem: How to express the single quote(') by using awk print function

Discussion started by: patrick87

2. Shell Programming and Scripting

scripting/awk help : awk sum output is not comming in regular format. Pls advise.

Discussion started by: rveri

3. Shell Programming and Scripting

awk: assign variable with -v didn't work in awk filter

Discussion started by: honglus

4. Shell Programming and Scripting

Problem with awk awk: program limit exceeded: sprintf buffer size=1020

Discussion started by: fate

5. Shell Programming and Scripting

Comparison and editing of files using awk.(And also a possible bug in awk for loop?)

Discussion started by: linuxkid

6. Shell Programming and Scripting

awk command to compare a file with set of files in a directory using 'awk'

Discussion started by: anandek

7. Shell Programming and Scripting

HELP with AWK one-liner. Need to employ an If condition inside AWK to check for array variable ?

Discussion started by: shell_boy23