Date: Mon, 27 Aug 2012 21:22:29 +0200 From: Giulio Ferro <auryn@zirakzigil.org> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org> Subject: Re: Problem with link aggregation + sshd Message-ID: <503BC8F5.3040208@zirakzigil.org> In-Reply-To: <E183609A-19E1-4EF4-B08D-FAA55779E193@my.gd> References: <5033FB17.7020600@zirakzigil.org> <503884A0.50708@zirakzigil.org> <FF06542A-9507-4C8C-99EC-8275B04D4CF1@my.gd> <E183609A-19E1-4EF4-B08D-FAA55779E193@my.gd>
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Hi, thanks for the answer
Here is what you asked for:
# ifconfig igb0
igb0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=4401bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO>
ether ...
inet 192.168.9.60 netmask 0xffffff00 broadcast 192.168.9.255
inet6 .... prefixlen 64 scopeid 0x1
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
# netstat -rn
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 192.168.9.1 UGS 0 0 igb0
127.0.0.1 link#12 UH 0 0 lo0
192.168.9.0/24 link#1 U 0 14 igb0
192.168.9.60 link#1 UHS 0 0 lo0
192.168.12.0/24 link#13 U 0 109 lagg0
192.168.12.21 link#13 UHS 0 0 lo0
Internet6:
Destination Gateway Flags
Netif Expire
::/96 ::1 UGRS
lo0
::1 link#12 UH
lo0
::ffff:0.0.0.0/96 ::1 UGRS
lo0
fe80::/10 ::1 UGRS
lo0
fe80::%igb0/64 link#1 U
igb0
fe80::ea39:35ff:feb6:a0d4%igb0 link#1 UHS
lo0
fe80::%igb1/64 link#2 U
igb1
fe80::ea39:35ff:feb6:a0d5%igb1 link#2 UHS
lo0
fe80::%igb2/64 link#3 U
igb2
fe80::ea39:35ff:feb6:a0d6%igb2 link#3 UHS
lo0
fe80::%igb3/64 link#4 U
igb3
fe80::ea39:35ff:feb6:a0d7%igb3 link#4 UHS
lo0
fe80::%lo0/64 link#12 U
lo0
fe80::1%lo0 link#12 UHS
lo0
fe80::%lagg0/64 link#13 U
lagg0
fe80::ea39:35ff:feb6:a0d5%lagg0 link#13 UHS
lo0
ff01::%igb0/32 fe80::ea39:35ff:feb6:a0d4%igb0 U
igb0
ff01::%igb1/32 fe80::ea39:35ff:feb6:a0d5%igb1 U
igb1
ff01::%igb2/32 fe80::ea39:35ff:feb6:a0d6%igb2 U
igb2
ff01::%igb3/32 fe80::ea39:35ff:feb6:a0d7%igb3 U
igb3
ff01::%lo0/32 ::1 U
lo0
ff01::%lagg0/32 fe80::ea39:35ff:feb6:a0d5%lagg0 U
lagg0
ff02::/16 ::1 UGRS
lo0
ff02::%igb0/32 fe80::ea39:35ff:feb6:a0d4%igb0 U
igb0
ff02::%igb1/32 fe80::ea39:35ff:feb6:a0d5%igb1 U
igb1
ff02::%igb2/32 fe80::ea39:35ff:feb6:a0d6%igb2 U
igb2
ff02::%igb3/32 fe80::ea39:35ff:feb6:a0d7%igb3 U
igb3
ff02::%lo0/32 ::1 U
lo0
ff02::%lagg0/32 fe80::ea39:35ff:feb6:a0d5%lagg0 U
lagg0
# netstat -aln | grep 22
tcp4 0 0 *.22 *.* LISTEN
tcp6 0 0 *.22 *.* LISTEN
Note that I already tried to only listen on igb0 interface
(192.168.9.60) in sshd_config, but the results are exactly
the same described below.
On 08/25/2012 01:22 PM, Damien Fleuriot wrote:
> In the meantime kindly post:
>
>
> Ifconfig for your igb0
> Netstat -rn
> Netstat -aln | grep 22
>
>
>
> On 25 Aug 2012, at 13:18, Damien Fleuriot <ml@my.gd> wrote:
>
>> I'll get back to you regarding link aggregation when I'm done with groceries.
>>
>> We use it here in production and it works flawlessly.
>>
>>
>>
>> On 25 Aug 2012, at 09:54, Giulio Ferro <auryn@zirakzigil.org> wrote:
>>
>>> No answer, so it seems that link aggregation doesn't really work in freebsd,
>>> this may help others with the same problem...
>>>
>>> I reverted back to one link for management and one for service, and ssh
>>> works as it should...
>>>
>>>
>>> On 08/21/2012 11:18 PM, Giulio Ferro wrote:
>>>> Scenario : freebsd 9 stable (yesterday) amd64 on HP server with 4 nic (igb)
>>>>
>>>> 1 nic is connected standalone to the management switch, the 3 other nics
>>>> are connected to a switch configured for aggregation.
>>>>
>>>> If I configure the first nic (igb0) there is no problem, I can operate
>>>> as I normally do and sshd functions normally.
>>>>
>>>> The problems start when I configure the 3 other nics for aggregation:
>>>>
>>>> in /etc/rc.conf
>>>> ...
>>>> ifconfig_igb1="up"
>>>> ifconfig_igb2="up"
>>>> ifconfig_igb3="up"
>>>>
>>>> cloned_interfaces=lagg0
>>>> ifconfig_lagg0="laggproto lacp laggport igb1 laggport igb2 laggport igb3 192.168.12.7/24"
>>>> ...
>>>>
>>>> I restart the server and the aggregation seems to work correctly, in
>>>> fact ifconfig returns the correct lagg0 interface with the aggregated
>>>> links, the correct protocol (lacp) and the correct ip address and the
>>>> status is active. I can ping other IPs on the aggregated link.
>>>>
>>>> Also the other (standalone) link seems to work correctly. I can ping
>>>> that address from other machines, and I can ping other IPs from that
>>>> server.
>>>>
>>>> DNS lookups work ok too I can also use telnet to connect to pop3
>>>> servers so there seems to be no problem on the network stack.
>>>>
>>>> But if I try to connect to the sshd service on that server, it hangs
>>>> indefinitely. On the server I find two sshd processes:
>>>> /usr/sbin/sshd
>>>> /usr/sbin/sshd -R
>>>>
>>>> There is no message in the logs.
>>>>
>>>> If I try to kill sshd (/etc/rc.d/sshd stop) I can't. it just stays there
>>>> forever waiting for the pid to die (it never does)
>>>>
>>>> Even ssh client doesn't seem to work. In fact, if I try to connect to
>>>> another server, the ssh client may start to work correctly, then soon
>>>> or later it just hangs there forever, and I can't kill it with ctrl-c.
>>>>
>>>> No firewall is configured, there is nothing else working on this server.
>>>>
>>>> Thanks for any suggestions...
>>>> _______________________________________________
>>>> freebsd-stable@freebsd.org mailing list
>>>> http://lists.freebsd.org/mailman/listinfo/freebsd-stable
>>>> To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
>>>
>>> _______________________________________________
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