Issue 338060043: FIB - Forwarding Information Base

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Issue 338060043: FIB - Forwarding Information Base

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Created:
6 years, 5 months ago by Michail.Xirouchakis

Modified:
6 years, 5 months ago

Reviewers:
engr.sikandar.iqbal, 2016shana2333, Vasileios Papageorgiou, dkostic, younes.tahri3, paul.busi38, alireza.farshin

Visibility:
Public.

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Description

FIB - Forwarding Information Base CPM maintains a table (actually a Python dict) with the current best path between two edge switches. By edge switch I define a switch that has hosts connected to itself. The FIB is updated every time new path metrics are calculated. Currently this happens when CPM receives new data (e.g. NFM data) from DM. Once hostA (on switchA) wants to reach hostZ (on switchZ), its packet is punted to switchA. SwitchA will check the FIB and pick the output port to forward the packet. This packet will be punted (to the controller) by all transit switches along the end-to-end path. By transit switch I define a switch that is in the middle of an end-to-end path. BUG=

Patch Set 1 #

Patch Set 2 : When CPM boots, send JSON with event new_topology to drop DB. #

Created: 6 years, 5 months ago

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		Unified diffs	Side-by-side diffs	Delta from patch set	Stats (+263 lines, -133 lines)			Patch
	M	cpm/cpm_13.py	View	1	10 chunks	+263 lines, -133 lines	0 comments	Download

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Total messages: 1

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Michail.Xirouchakis

6 years, 5 months ago (2017-11-19 14:42:54 UTC) #1

FIB - Forwarding Information Base

CPM maintains a table (actually a Python dict) with the current best path
between two edge switches.
By edge switch I define a switch that has hosts connected to itself.

The FIB is updated every time new path metrics are calculated.
Currently this happens when CPM receives new data (e.g. NFM data) from DM.

Once hostA (on switchA) wants to reach hostZ (on switchZ), its packet is punted
to switchA.
SwitchA will check the FIB and pick the output port to forward the packet.

This packet will be punted on all transit switches along the end-to-end path.
By transit switch I define a switch that is in the middle of an end-to-end path.

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