non-EOS packets cannot take this path, because to do so would expose
the neighbouring router to a label that it did not allocate.
-The desgin choice to make with an MPLS FIB table is therefore:
+The design choice to make with an MPLS FIB table is therefore:
- 20 bit key: label only. When the EOS and non-EOS actions differ the result is a 'EOS-choice' object.
- 21 bit key: label and EOS-bit. The result is then the specific action based on EOS-bit.
20 bit key
- Advantages:lower memory overhead, since there are few DB entries.
- Disadvantages: slower DP performance in the case the path-lists
- differ, as more objects are encounterd in the switch path
+ differ, as more objects are encountered in the switch path
21 bit key
- Advantages: faster DP performance