1. Working of timer Slides Prepared By Adeel Ahmed,
Updated By, Syed Ameen Quadri.

2. How Update timer works ? JIZ JED RYD 10 05 15 25 30 00 20 15 00 10 30 E0
1.150
LAN /24
2.150
LAN /24
3.150
LAN /24
Network
Int
Hops E
Network
Int
Hops E
Network
Int
Hops E E0 S0 E0 S1 S0 E0 S1 S0 1 S1 1 S0 1 S1 1 S1 1 S0 2 S0 1 S1 2

3. How Invalid timer works ?60 30
120
180
150 00 90 30 60 00
120 90
150
180
JIZ
JED
RYD S0 S0 S1 S1 E0
1.150
LAN /24
2.150
LAN /24
3.150
LAN /24
Network
Int
Hops E E0 S0 1 2
Network
Int
Hops E E0 S1 S0 1
Network
Int
Hops E E0 S1 1 2 S0 1 2 S1 1

4. How Invalid timer works ?60 30 90 00
150
180
120 30 60 90 00 00 30
JIZ
JED
RYD S0 S0 S1 S1 E0
1.150
LAN /24
2.150
LAN /24
3.150
LAN /24
Network
Int
Hops E E0 S0 1 2
Network
Int
Hops E E0 S1 S0 1
Network
Int
Hops E E0 S1 1 2 S0 1 2 S0 1 2 S1 1 S1 1

5. How Flush timer works ? JIZ JED RYD 90 60 30 00 120 240 150 210 180 S0 E0
1.150
LAN /24
2.150
LAN /24
3.150
LAN /24
Network
Int
Hops E E0 S0 1 2
Network
Int
Hops E E0 S1 S0 1
Network
Int
Hops E E0 S1 1 2 S0 1 2 S1 S0 1 2 S1 1