Multicast memory usage calculation (formula).
- Each (*.G) entry requires 380 bytes + outgoing interfaces list (OIL) overhead.
- Each (S,G) entry requires 220 bytes + outgoing interface list overhead.
**The outgoing interface list overhead is 150 bytes per OIL entry.
For example, if there are 10 groups with 6 sources per group and 3 outgoing interfaces:
10 x (380 + (3 x 150)) = 8,300 bytes for (*.G)
60 x (220 + (3 x 150)) = 40,200 bytes for (S,G)
A total of 48,500 bytes of memory is required for the mroute table.
Rasesh Patel 