I had planned on putting: clock source line independent on each controller but "independent" isn't recognized. I am planning on using multilink with 6 T1s between two identical 2811 with one side as internal and the other as line. I understand that if I don't use "independent" then clocking will be off as there is only one clocking port on the dual t1 VWIC-2MFT-t1. Help!
The 'independent' keyword is only available on the 2nd gen VWIC cards: VWIC2-2MFT-T1E1.
Since all connections are between the same routers, no need to clock independently on each line. Put one side as 'clock source internal' for all links, and the other side will be 'clock source line' for all links. Since the oscillator is shared for the whole chassis, the clock coming in all 6 links will be the same.