CHEETAH applications and controlplane testing on HOPI

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CHEETAH applications and control-plane testing on
HOPI
Malathi Veeraraghavan University of
Virginia mvee_at_virginia.edu

• Outline
• (Dynamic circuit) Services and applications
• Demonstrations (Tao Li)
• CHEETAH software
• Distributed control-plane Xiangfei Zhu
• Circuit TCP (CTCP) Mark McGinley, Helali Bhuiyan
• BWDetail Mark McGinley
• Virtualizer for HOPI Mark McGinley
• Application "circuit-aware" squid Xiuduan Fang
• Integrated call setup and release

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Services applications (for "dynamic circuit"
networks)
Leased lines
TCP/IP
Coarse Grained Sharing (CGS)
Fine Grained Sharing (FGS)
Service Types
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HOPI-CHEETAH testbeds interconnected
HOPI
CHEETAH
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Demonstrations

• CHEETAH software
• Distributed control-plane
• Circuit TCP (CTCP)
• BWDetail
• Virtualizer for HOPI
• Application "circuit-aware" squid

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CHEETAH Control Plane(all functions are
distributed)
LOSA

• CCPM CHEETAH Control-Plane Module
• OSPFD
• RSVPD
• Force10 programming module
• CCSA CHEETAH Client System Agent
• RSVPD
• CHEETAHD
• Circuit-requestor
• Circuit setup procedure
• losa-pc1
• Use circuit-requestor to initiate setup to
  sttl-pc1
• sends PATH meesage
• losa-CCPM
• Route computation, CAC, VLAN ID assignment
• sttl-CCPM
• Route extract, Local CAC and VLAN ID check
• sttl-pc1
• Configures VLAN, programs ARP and route tables
• Sends back RESV message

CCSA
10GbE
10GbE
GbE
pc1
CCSA
pc2
CCPM
Force10
pc3
Internet
STTL
CCSA
pc1
10GbE
10GbE
GbE
CCSA
pc2
CCPM
Force10
pc3
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Data-plane
Demo Configuration

• Circuit TCP
• disables TCP's congestion control
• sets cwnd ncap (bandwidth-delay product BDP)
• BWdetail
• a tool like iperf to send/receive data PLUS
• shows users important TCP parameters like cwnd
  (which Ethereal does not show)

• Demo will use BWdetail send/recv
• Impact of rate-limiting parameters
• BDP 650 packets ncap setting
• Committed rate 300Mbps
• Buffer 6501500B/1024 952KB
• Peak rate 1Gb/s
• Compare CTCP and BIC-TCP
• BWdetail screen output (cwnd)

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Virtualizer demo description
Demo Configuration

• Virtualizer a wrapper for authorization
• Allows multiple control-plane and/or
  management-plane experiments to share Force10
• Three sets of resources
• ports
• VLAN IDs
• bandwidth

• Compare login through the Virtualizer with
  resource set enforcement to a direct login
• Log in to Virtualizer
• Restricted to VLAN 620, 621, GigabitEthernet 2/0,
  TenGigabitEthernet 1/0, Bandwidth 600Mbps
• Log in directly to switch
• No restrictions

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Application circuit-aware squid
Internet
HTTP messages
Original HTTP messages
HTTP messages
squid
Core-only Circuit/VC network
squid
Web client
Web server
HTTP and ICP messages

• A web proxy software package squid
• "Circuit-aware" by integrating RSVP-TE CTCP
• Dynamic circuit setup triggered by web client
  request
• Use of circuits transparent to human users
• Use Internet path while circuit is being setup

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Summary of demonstrations

• CHEETAH software
• Distributed control-plane
• Circuit TCP (CTCP)
• BWDetail
• Virtualizer for HOPI
• Application "circuit-aware" squid

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Setup a circuit from losa-pc1 to sttl-pc1
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Automatic configuration on the end host
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Setup multiple circuits to the same remote end
host
Request exceeding the available bandwidth is
rejected.
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BWdetail showing BIC transfer

• a

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BWdetail showing BIC transfer

• Cwnd first column
• Unacked second
• Cwnd growth causes losswhen 3rd column(TCP
  state machine) shows 3 (recovery)

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BWdetail showing CTCP transfer

• a

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BWdetail showing CTCPtransfer

• Cwnd steady

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Virtualizer
Resource set
Virtualizer
Direct Login
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Circuit-aware Squid cont.
The 1st request was served on the Internet while
a circuit is being set up
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Circuit-aware Squid
The 2nd request was served on the established
circuit