After an exciting goalless draw, Forest travel to Leicester on Wednesday, January 18th for the replay.
It was an excellent start for Forest and they created two good charges early on. But they allowed Leicester to get back into the game and both sides missed chances to go in at half-time in the lead.
Leicester had the better of the second half, looking stronger as the game progressed and missing a succession of chances.
It was a fast and furious start but the game was only two minutes old before it was held up following an injury to Jeff Schlupp following a tackle by Janathan Greening and the Leicester player had to be stretchered off and was replaced by Jermaine Beckford.
The game restarted at a similar pace and Forest came close to taking an early lead when Chris Gunter made a great run down the right and crossed superbly for Lewis McGugan at the far post. His volley was brilliantly saved by Kasper Schmeichel and parried as far as Andy Reid, who tried to turn in the rebound but it was blocked, to calls of handball from A Block.
And Reid missed a chance when he beat his man and made a run through on goal and tried to slip the ball past Schmeichel, who managed to turn it round for a corner.
Forest continued to pile on the pressure, with Leicester hardly able to get the ball down the other end, it taking 21 minutes for them to win their first corner, with Forest already having clocked up five.
Leicester came close from a free kick 30 yards out, wide on the right and Paul Gallagher's chip to the near post came flying off the crossbar from David Nugent's header.
Forest almost gave away an own goal when Beckford made his way into the box and, under pressure to clear the danger, Kieron Freeman tried to head the ball back to Lee Camp, who had to dive to his right keep the ball out the back of the net.
Anda mistake the other end almost gave Forest a goal when Reid spotted the Leicester keeper off his line and Schmeichel had to run backwards with some urgency to turn the ball out for another Forest corner.
There was a let-off for Forest just before the break when Chamber's header was too short for an advancing Camp to reach, allowing Nugent to get on the end of the ball, but his effort towards an open net was off target.
The second half started with the same pace as the first with some good end-to-end football.
Forest were again producing some good football and made a good move down the right where Garath McCleary played in Gunter whose ball in was cleared. It came back to McCleary and then to Moussi, but he miskicked.
And Leicester missed a real chance when Yuki Abe won the ball and ran with it from the halfway line, feeding it to Gallager on the right, but he blazed over the crossbar.
In Leicester's best spellof the game, the away fans behind the goal in the Bridgford stand thought they had scored when Gallagher sent the ball flying towards goal, but it went into the side netting.
Gallagher went off straight after in a double substitution as they continued to pile on the pressure.
There was a standing ovation for Forest's first substitution, both for Reid following another excellent performance and for Marlon Harewood on his return to the City Ground.
Leicester came closewhen Paul Konchesky got on the end of Lynch's clearance and sent the ball right across the face of goal before it was deflected out for a corner.
And down the other end McCleary, after a good run, also sent the ball across the six-yard line but, with nobody able to reach, it went out the other side.
Beckford missed the best chance of the half so far when, finding himself in space, he shot from 15 yards out and lofted the ball high over the crossbar.
Dexter Blackstock became the second Forest substitute, replacing Tudgay on 78 minutes.
Leicester again missed the perfect chanceto score after Camp made a great save from Nugent's header and the ball came back out to Dyer who volleyed over from four yards out.
Forest's final substitution saw Paul Anderson come on for McCleary with eight minutes remaining.
Matt Mills could be considered lucky to only pick up a yellow card after his elbow connected with Blackstock's head.
Play stopped in the 90th minute when Freeman, who had an excellent game, received treatment and the game re-started with three minutes stoppage time to play, but there were no further chances for either side.
Nottingham Forest: Camp, Gunter, Freeman, Chambers(C), Lynch, Moussi, Greening, McCleary(Anderson 82min), McGugan, Reid(Harewood 66min), Tudgay(Blackstock 78min)
Subs not used: Smith, Boateng, Majewski, Derbyshire,
Leicester City: Schmeichel, Peltier, Konchesky, Mills(C), Gallagher(Dyer 60min), King, Abe(Wellens 60min), Danns, Schlupp(Beckford 5min), Tunchev, Nugent
Subs not used: Weale, Moussa, Kennedy, Taft
Bookings: Danns 34min, Mills 85min
Referee: G Eltringham
Attendance: 18,477 Away 7,816