Understanding the BGP Peering details your CCNA didn't teach you
1 Quick Facts BGP uses TCP port 179 and is path vector protocol, rather than distance vector or link-state Keep-alive is 60s by default and Hold time is 180s Only hold time is negotiated in Open...
Published Oct 08, 2019
Version 1.0Nov 06, 2019
Hi Piotr,
As far as I know, tmsh is supposed to completely replace imish. If they left imi as read-only in later versions that's likely because all the features are now available via tmsh. So, for new config, I'd stick to tmsh. You can even do automation with iControl and that's much better than imish alone. Regarding your last question about using both tmsh and imish I never tried myself so I can't answer it. I'd need to test it and see if it works.
Cheers.
Rodrigo