[c-nsp] Migrating multi 1Gb port-chan member ints to 10G .....possible withot having to create a new portchan?

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I dont believe that you can remove all of a portcchan's member Ints (Ive not tested this, but read a forum post were someone was attempting something similar (1G->10G), and the router threw an error when attempting to remove the last 1G Int (Something along the lines of "portchan cannot be without physical interfaces due to sub-interfaces, at least one physical interface must be in the portchan")...I also had a quick look at the 1x10GSPA (SPA-1X10GE-L-V2 (XFP)), and I dont believe they are dual rate...ie dont support manual setting of speed/duplex....We have tested with an older lab switch (2960), manually setting ports to 100M (that are Gb Ints)...with 2 "100M ports" in the portchan, if you try to add the "1G" ports, it complains:

 %EC-5-CANNOT_BUNDLE2: Gi1/0/25 is not compatible with Gi1/0/1 and will be suspended (speed of Gi1/0/25 is 1000M, Gi1/0/1 is 100M)
 %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/25, changed state to down

Then removing the 2 x "100M" ports from portchan, the 2 x "1G" ports automatically came up, and stayed up, and portchan remained up....Im hoping we see similar behavior on the ASR1K/4500X (Under maintenance window, so small outage is ok).


Thanks
________________________________
From: cisco-nsp <cisco-nsp-bounces at puck.nether.net> on behalf of Tom Hill <tom at ninjabadger.net>
Sent: Tuesday, 13 June 2017 5:21 AM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Migrating multi 1Gb port-chan member ints to 10G .....possible withot having to create a new portchan?

On 12/06/17 19:28, Nick Cutting wrote:
> I think this is possible, but with a little bit of downtime when you change the new links from 1000 to ten gig.
> You should be able to lab this up with 1000Mbit and 100Mbit on an old switch, nothing laying around?

If this causes a little downtime, why not just remove all the 1GE
interfaces and add the 10GE interface(s)?

You can pre-prepare the config and just paste it in, to avoid it taking
too much time. :)

--
Tom
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