UFC lightweight champion Khabib Nurmagomedov and Conor McGregor have been banned for nine and six months respectively for their roles in a post-fight brawl at UFC 229.

The Nevada State Athletic Commission handed out the suspensions and fines of $500,000 for Nurmagomedov and $50,000 for McGregor at a hearing on Tuesday.

Both suspensions are retroactively imposed from October 6.

Nurmagomedov's suspension can be reduced to six months if he "cooperates in the filming and distributing of an anti-bullying public service announcement".

The 155-pound fighter defeated McGregor by submission in four rounds in October and subsequently jumped out of the cage and got into a fight with McGregor's training partner, Dillon Danis.

Nurmagomedov was eventually calmed down, but his actions brought about further incidents in the ring where McGregor threw a punch at a member of from Khabib's corner and was then hit with a sucker punch from another man.

Nurmagomedov's manager Ali Abdelaziz expressed his unhappiness with the disparity between the two punishments.

"I don't think it's fair," he told ESPN. "Khabib gets $500,000 and Conor gets $50,000? I think it's b******t."

Nurmagomedov's brother, Abubakar, has also been suspended for one year for jumping into the cage after the fight. He was additionally fined $25,000.