Is Infrastructure Affecting Critical BTs? Harish Nataraj

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NETWORK SCENARIOS

Technology

Architecture - Agent

Confidential

App Flow (BT)

Network Flows

User

App

AppD Agent

Kernel

TCP/IP

AppD Controller

L3 Switch

Node

PCAP

Message è Flow Mapping

Confidential

App

TCP/IP

Node A

L3 Switch LBFirewall L3 Switch

App

TCP/IP

Node B

MsgID-XY ID-XY

Flow ID: F1 (5 Tuple)

Flow ID: F2 (5 Tuple)

Sender Flow ID: F1 Receiver Flow ID: F2

Message è Flow Mapping

Confidential

ID-XY Msg ID Sender Flow ID Receiver Flow ID XY F1 F2

ID-XY

E-Commerce Application

Confidential

Nodes Nodes

E-Commerce Tier Inventory Tier

Internet

LB

Nodes

LB

Order Processing Tier

Internet

Payment GW Tier

Pinpoint Congestion

Confidential

Nodes Nodes

E-Commerce Tier Inventory Tier

Internet

LB

Nodes

LB

Order Processing Tier

Internet

Payment GW Tier

Inject Congestion

Not All Flows Are Equal!

Confidential

How is it Done Today?

Confidential

Pinpoint Packet Loss

Confidential

Nodes Nodes

E-Commerce Tier Inventory Tier

Internet

LB

Nodes

LB

Order Processing Tier

Internet

Payment GW Tier

Inject Loss

Loss is Painful!

Confidential

How is it Done Today?

Confidential

SERVER SCENARIOS

APPENDIX

Deep Path Analysis

Confidential

•  Trace Network Path •  Identify Packet Loss Location

MemCacheTier

InventoryTier

LBL3 Switch

Bad switch port causing sporadic packet loss

L3 Switch