Aventinus' narrative confirmed that Conrad was obliged to pay tribute to the Hungarians, as well as his predecessor Louis the Child, together with the Swabian, Frankish, Bavarian and Saxonian dukes, after the Battle of Rednitz in June 910. According to the chronicler, paying the regular tax was the "price of peace". After the western border was pacified, the Hungarians used the Eastern provinces of the Kingdom of Germany as puffer zone and transfer area to execute their long-range military campaigns to far West. Bavaria allowed Hungarians into their realm to continue their journey and the Bavarian–Hungarian relations were described as neutral during this time. 

Despite "peace" which was guaranteed by regular tax payments, he was faced with constant raids from the Hungarians, when they entered the border or returned to the Pannonian Basin after a distant campaign. However the energetic and combative Arnulf already defeated a small Hungarian raiding contingent at Pocking near the Rott river on 11 August 909, after they withdrew from a campaign where they burnt the two churches of Freising. In 910, he also beat another minor Hungarian unit at Neuching, which returned from the victorius Battle of Lechfeld and other plundering attacks.

The Battle of the Inn was fought in 913, when a Hungarian raiding army, at their return from plunder attacks against Bavaria, Swabia, and Northern Burgundy, faced the combined army of Arnulf, Duke of Bavaria, Counts Erchanger and Burchard of Swabia, and Lord Udalrich, who defeated them at Aschbach by the River Inn.