[OpenIndiana-discuss] LACP between OpenIndiana and a Cisco C3560: only some traffic passes.
Udo Grabowski (IMK)
udo.grabowski at kit.edu
Tue Sep 10 11:05:12 UTC 2013
Hm, looks ok so far. Can you ping yourself on the
interface IP ?
The usual stuff is to check /etc/hostname.aggr1,
/etc/hosts (should be a link to /etc/inet/hosts)
should contain the IP adress and name of the host
on that interface (it seems it does not, since your
routing table shows only the IP, not the name),
/etc/defaultrouter must have your gateway, /etc/nsswitch.conf
should have 'files' as first entry for hosts and ipnodes,
/etc/netmasks should have a class C broadcast entry for
your network, nwam should be really off, /etc/resolv.conf
should have domain, nameserver, search entries, IP forwarding/
routing service off, mtu should be 1500 (if you don't have
everything on 9000). MAC address should be nonzero, I've
a workstation at home where the netcard looses its mac address
everytime I unplug it from power...
Sometimes a simple reboot helps after heavy configuration
changes, I've also seen Cisco switches where you sometimes
have to reconfigure the ports a second time with the exactly
same configuration to get them active (and it often takes
some time until they come up), unplug/replug could help.
On 10/09/2013 11:22, Antony Brooke-Wood wrote:
> Hi Udo,
>
> I had the switch in access mode already (though I did try to force it as a
> trunk out of frustration). The switch config is as follows:
> interface Port-channel10
> description ARC01_LACP
> switchport mode access
> !
> interface GigabitEthernet0/41
> description ARC01_LACP
> switchport mode access
> channel-group 10 mode active
> !
> interface GigabitEthernet0/42
> description ARC01_LACP
> switchport mode access
> channel-group 10 mode active
>
> Switch shows:
> SW01#show lacp 10 internal
> Channel group 10
> LACP port Admin Oper Port Port
> Port Flags State Priority Key Key Number
> State
> Gi0/41 SP bndl 32768 0xA 0xA 0x12A
> 0x3C
> Gi0/42 SP bndl 32768 0xA 0xA 0x12B
> 0x3C
>
> SW01#show lacp 10 neighbor
> Channel group 10 neighbors
> Partner's information:
> LACP port Admin Oper Port
> Port
> Port Flags Priority Dev ID Age key Key Number
> State
> Gi0/41 SA 4096 6805.ca11.19a6 8s 0x0 0x3EA 0x4
> 0x3D
> Gi0/42 SA 4096 6805.ca11.19a6 5s 0x0 0x3EA 0x5
> 0x3D
>
> Port: Gi0/42
> ------------
>
> Port state = Up Mstr Assoc In-Bndl
> Channel group = 10 Mode = Passive Gcchange = -
> Port-channel = Po10 GC = - Pseudo port-channel =
> Po10
> Port index = 0 Load = 0x00 Protocol = LACP
>
> Flags: S - Device is sending Slow LACPDUs F - Device is sending fast
> LACPDUs.
> A - Device is in active mode. P - Device is in passive mode.
>
> Local information:
> LACP port Admin Oper Port Port
> Port Flags State Priority Key Key Number
> State
> Gi0/42 SP bndl 32768 0xA 0xA 0x12B
> 0x3C
>
> Partner's information:
>
> LACP port Admin Oper Port
> Port
> Port Flags Priority Dev ID Age key Key Number
> State
> Gi0/42 SA 4096 6805.ca11.19a6 6s 0x0 0x3EA 0x5
> 0x3D
>
> Age of the port in the current state: 0d:00h:17m:42s
>
> The LACPDU speeds are already in synch (both set to slow/long).
> I had both side set to active, but I've changed it to passive on the switch
> side (no change).
> I previously had the policy set only to L4, but I've changed it to L2,L3,L4
> (no change).
>
> What I really don't understand is how I got a DHCP address across the link,
> but can't do anything else.
>
> Any other ideas?
>
>
> Regards,
>
> Antony Brooke-Wood
> Mobile: +61 404 460 326
>
>
> On 10 September 2013 18:42, Udo Grabowski (IMK) <udo.grabowski at kit.edu>wrote:
>
>> On 10/09/2013 10:14, Antony Brooke-Wood wrote:
>>
>>> I am running OpenIndiana (oi_151a8) and have two NICs aggregated using
>>> LACP
>>> connected to a Cisco WS-C3560G-48TS. Both the server and the switch show
>>> the aggregate link as up. But while link layer traffic is visible ('snoop'
>>> shows ARP requests etc), I can not pass any IP traffic (ping, ssh all
>>> fail). The really strange thing is that the aggregate link can obtain a
>>> DHCP address, which provides the correct gateway etc. My initial thoughts
>>> were that there was a problem with the VLAN configuration, but the switch
>>> is running everything on VLAN1. I also tried explicitly adding this on
>>> both
>>> ends, but without success (OI won't let me configure a VLAN with the
>>> native
>>> VLAN). Any ideas?
>>>
>>>
>> The switch should have its ports also in a LACP group, and this
>> group should be VLAN access, not a trunk port, otherwise you have
>> to create a vlan aggr on your host also (which makes no real sense
>> if you only access this subnet on the host). You may also set the
>> policy to all layers (-P L2,L3,L4), LACPDU speed should match. We
>> usually prefer to set the switch to passive and host to active
>> mode:
>>
>> interface GigabitEthernet0/14
>> switchport access vlan yyyy
>> switchport mode access
>> channel-group 10 mode passive
>>
>> If you see
>>
>> switchport trunk encapsulation dot1q
>> switchport trunk allowed vlan yyyy
>> switchport mode trunk
>>
>> you have a trunk port, not an access port.
>>
>> Port: Gi0/14
>> ------------
>>
>> Port state = Up Mstr Assoc In-Bndl
>> Channel group = 10 Mode = Passive Gcchange = -
>> Port-channel = Po10 GC = - Pseudo port-channel =
>> Po10
>> Port index = 0 Load = 0x00 Protocol = LACP
>>
>> Flags: S - Device is sending Slow LACPDUs F - Device is sending fast
>> LACPDUs.
>> A - Device is in active mode. P - Device is in passive mode.
>>
>> Local information:
>> LACP port Admin Oper Port
>> Port
>> Port Flags State Priority Key Key Number
>> State
>> Gi0/14 SP bndl 32768 0xA 0xA 0xE
>> 0x3C
>>
>> Partner's information:
>>
>> LACP port Admin Oper Port
>> Port
>> Port Flags Priority Dev ID Age key Key Number
>> State
>> Gi0/14 SA 4096 0014.4f01.ddd2 28s 0x0 0x3E9 0x4
>> 0x3D
>>
>> Age of the port in the current state: 692d:17h:49m:29s
>>
>>
--
Dr.Udo Grabowski Inst.f.Meteorology a.Climate Research IMK-ASF-SAT
www.imk-asf.kit.edu/english/sat.php
KIT - Karlsruhe Institute of Technology http://www.kit.edu
Postfach 3640,76021 Karlsruhe,Germany T:(+49)721 608-26026 F:-926026
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