I found two description of sid salat in the literature:
Which one is supported by authentic hadith? Our prophet and the sahabah used to perform eid salat using how many extra takbir - 6 or 12?
You are correct in making six extra takbeeraat. With regard to the number of extra takbeeraat in the Eid salâh, there is legitimate difference of opinion among the scholars. There is no one narration of hadeeth in this matter which can be considered as unquestionably more authentic than the others. Thus, Imam Shawkâni recorded ten different practices of the salaf (pious predescessors).
The following is a summary of relevant sections from the discussion in several books of fiqh:
Imâm Shâfi’i holds that there are 12 extra takbeeraat – 7 in the first ra’kah, and 5 in the second. In both of the rak’ât, the takbeeraat are said before the recitation. A hadeeth in this regard is narrated by Tirmidhi on the authority of ‘Amr bin ‘Awf Muzni R.A .
Imâm Mâlik and Imâm Hanbal hold that there are 11 extra takbeeraat – 6 only in the first rak’ah and 5 in the second, also said before the recitation. They similarly base this ruling on the ahâdeeth such as that narrated by Imâm Mâlik, Tirmidhi and Abu Dawood, but they consider the takbeer-e-tahreemah to be included in the initial seven – thus, there are only 6 extra takbeeraat according to them.
The opinion of the Hanafiyyah is that there are 6 extra takbeeraat – 3 in the first rak’ah before the recitation, and 3 in the second rak’ah after the recitation of Qur’ân. (Fiqh-us-Sunnah)