06-28-2011 02:46 AM - edited 03-07-2019 01:00 AM
Hi,
I'd like to have a redundant link from the 1921s to my switch stack. So I was thinking of LACP.
The Cisco feature navigator clearly lists this for 15.1(4)M on 1921 platform :
Link Aggregation Control Protocol (LACP) (802.3ad) for Gigabit Interfaces
So this should clearly be supported but somehow I can't find how to do it ...
Currently I managed to configure a 'static / forced' one with:
interface Port-channel1
ip address 192.168.0.2 255.255.255.0
interface GigabitEthernet0/0
channel-group 1
interface GigabitEthernet0/1
channel-group 1
But I can't figure how to enable LACP ...
Some guides said I must use channel-group 1 mode active . But this doesn't seem to exist here. Some other said to use this but on the Port-Channel interface, again no luck ..
So how is this configured ?
Cheers,
Sylvain Munaut
Solved! Go to Solution.
06-29-2011 02:47 AM
Hello Sylvain,
LACP might be supported only on etherswitch modules and not on the built-in ports
I would expect this.
see
Hope to help
Giuseppe
06-29-2011 02:47 AM
Hello Sylvain,
LACP might be supported only on etherswitch modules and not on the built-in ports
I would expect this.
see
Hope to help
Giuseppe
06-30-2011 04:01 AM
Turns out you're right ... I do find this a little surprising because etherchannel works, only LACP negatiation doesn't and I would have expected they could do it entirely in software ... (I mean a standard PC with two NICs can do it ...)
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