3Com 2200 Switch User Manual


 
Opcodes A-3
pushTop
Description:
Pushes the current top of the stack onto the stack (that is, it reads the top of the
stack and pushes the value onto the stack). The size of the push is determined by
the size of the contents of the stack.
Storage Needed:
1 byte
pushSAGM
Description:
Pushes the source address group mask (SAGM) onto the top of the stack. The
SAGM is a bitmap representing the groups to which the source address of a
packet belongs. This instruction pushes 4 bytes onto the stack.
Each address group is represented by a single bit in the SAGM.
Multicast addresses (including broadcast addresses) are in all groups.
Storage Needed:
1 byte
pushDAGM
Description:
Pushes the destination address group mask (DAGM) onto the top of the stack.
The DAGM is a bitmap representing the groups to which the destination address
of a packet belongs. This instruction pushes 4 bytes onto the stack.
Each address group is represented by a single bit in the DAGM.
Multicast addresses (including broadcast addresses) are in all groups.
Storage Needed:
1 byte