Date: Mon, 5 Feb 2007 09:21:37 GMT From: Prokofiev Sergey<proks@uptel.net> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/108789: carp, vlan, routing : trouble or feature ? Message-ID: <200702050921.l159LbKY025173@www.freebsd.org> Resent-Message-ID: <200702050930.l159UFH6018442@freefall.freebsd.org>
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>Number: 108789
>Category: kern
>Synopsis: carp, vlan, routing : trouble or feature ?
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Feb 05 09:30:14 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator: Prokofiev Sergey
>Release: 6.2-STABLE
>Organization:
Telnet
>Environment:
FreeBSD freebsd.uptel.net 6.2-STABLE FreeBSD 6.2-STABLE #0: Wed Jan 17 15:07:27 EET 2007 proks@freebsd.uptel.net:/usr/obj/usr/src/sys/ROUTER i386
>Description:
I have a problem with CARP on FreeBSD 6.2 in the following scheme:
+--------------+ +-----------------------+ +-----------------+
| A | | B | | C |
| vlan20 |--//-->| vlan20 vlan10 |---//---| vlan10 |
+--------------+ +-----------------------+ +-----------------+
vlan20 10.10.10.2/26 vlan20 10.10.10.1/26
gateway 10.10.10.1 vlan10 10.10.9.1/26 vlan10 10.10.9.2/26
carp10 10.10.9.3/26 carp10 10.10.9.3/26
advskew 0 advskew 1
carp11 10.10.9.4/26 carp11 10.10.9.4/26
advskew 1 advskew 0
i.e. server B MASTER for 10.10.9.3/26, BACKUP for 10.10.9.4/26
server C BACKUP for 10.10.9.3/26, MASTER for 10.10.9.4/26
But if to send icmp request from server A -> to server C on ip 10.10.9.4,
server B replay from BACKUP iface carp11 !?!?
This is trouble or feature of realization ?????
-------------------------------------------------
serverB> ifconfig carp*
carp10: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 10.10.9.3 netmask 0xffffffc0
carp: MASTER vhid 100 advbase 1 advskew 0
carp11: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 10.10.9.4 netmask 0xffffffc0
carp: BACKUP vhid 101 advbase 1 advskew 1
/etc/sysctl.conf:
net.inet.carp.preempt=1
serverC> ifconfig carp*
carp10: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 10.10.9.3 netmask 0xffffffc0
carp: BACKUP vhid 100 advbase 1 advskew 1
carp11: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 10.10.9.4 netmask 0xffffffc0
carp: MASTER vhid 101 advbase 1 advskew 0
/etc/sysctl.conf:
net.inet.carp.preempt=1
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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