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

Pete Templin petelists at templin.org
Wed Jun 14 13:47:18 EDT 2017


Copy the config off-box, trim it down to just the subinterfaces, copy 
that resulting file to bootflash. Delete the members, add the new 
members, and if you have to restore the subinterfaces, copy 
bootflash:subints-config-bits running-config

It's not hard, you can have your ducks all ready to go, and drop it 
right back in.


On 6/13/17 9:04 PM, CiscoNSP List wrote:
> Well tried this last night, and the ASR1K did not cooperate.....4500X, played nice and behaved like the 2960 (Adding 10G ports to the portchan, rejected them due to speed difference, but still adds them to the portchan, but in suspended mode....so all good there, but ASR1K, (As well as only allowing 4 member ints in a portchan.,,which was a tad inconvenient), when attempting to add the 10G port, it simply rejects them due to bandwidth, ie, does not put the port into suspended mode/add it to the member Ints config......so, if you remove the 1G links, portchan would have no members....you would have to add 10G members after removing all 1G.....but Im almost positive the ASR will not allow me to remove all the 1G ints, due to the subinterfaces (I didnt want to test this on the production ASR1K, maintenance window was only short).....so, going to test it on an asr1001, and see what the result is....I really really hope I can just shutdown the portchan, remove all the 1G ints, add the 10G;s then re-enable the portchan...I hope I dont have to remove portchan, remove 1G ints from it, re-create it, then add the 10G's.....subints are referenced in ospf/bgp etc....wouldnt surprise me if they were dynamically removed...other option is to change startup conf, save, reboot (Or potentially save, then replace running with startup.....but having done that on previous  occasions, it doesnt always go smoothly 😉)
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