Spirent Test Center – Setting
up basic
MPLS LDP sessions and advertising LSPs
using OSPF as IGP
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Content
Introduction
Components Used
Configuration Summary
Test Topology
Connect to the Spirent TestCenter chassis and setup
two ports
Enable OSPF & LDP and advertise the routes
&LSPs
Use Traffic Wizard to create traffic between the LSPs
Check counters in real-time and after the test stops
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Introduction
The purpose of this document is to provide the user
step-by-step instructions to
configure LDP neighbors, advertise LSPs, and send traffic to
the advertised routes
using OSPF as the IGP.
Components Used
- DUT
configured with LDP & OSPF connected to two Ethernet Spirent ports
- Spirent
TestCenter 9U chassis with two Ethernet interfaces
- Spirent
TestCenter application software
Configuration Summary
- Connect
to the Spirent TestCenter chassis and setup two ports
- Enable
OSPF & LDP and advertise the routes & LSPs
- Use
Traffic Wizard to create traffic between the LSPs
- Check
counters in real-time and after the test stops
Test Topology
Connect to the Spirent TestCenter chassis and setup
two ports
Step#1: Click Actions, Connect
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Step#2: Click Active on the ports and hit Apply
NOTE: Apply button must be clicked after
every config change
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Step#3: If link does not come up, double check the Media
Type and Auto Negotiation settings
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Step#4: Right-click on any of the port LEDs and use
the Link or Unlink option to check if you are connected to the right port
on the DUT (useful feature if working remote from physical setup)
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Step#5: Go to the IP Config section, configure the
IP address of the ports, and click Apply
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Step#6: Go to DUT and ping the Spirent port
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Enable OSPF & LDP and advertise the routes and
LSPs
Step#7: Go to the Protocols section and enable OSPF
and LDP on both ports
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Step#8: Go to Adjacencies and click on Apply
Default Addresses
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Step#9: Go to the Router-LSA section, click LSA
Generator, and set Routers to value = 2
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Step#10: Click Stub Networks and set # Stub
Networks to 0
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Step#11: Click Summary Routes and set # Summary
LSAs to 0
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Step#12: Click External Routes and set #
External-Routes-LSAs to 100, Distribution Even, Min Prefix 32, Max Prefix
32, % Duplicated 0
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Step#13: Click Other and set the Start IP Address
to 201.1.1.1
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Step#14: Click External-LSAs section and note the
routes advertised from each OSPF router
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Step#15: Go to LDP, Sessions and change the Min
Label on both LDP sessions
NOTE: This is used to easily differentiate the LSPs
on the DUT
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Step#16: Go to LDP, LSPs, right click on a sesion
and click New LSP
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Step#17: Configure 50 prefixes (/32) on both LDP sessions
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Use Traffic Wizard to create traffic between the LSPs
Step#18: Go to Streams and click on Traffc Wizard
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Step#19: Select All LDP LSPs on both sides and
click on Next
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Step#21: Note the Streams that are configured
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Step#22: View and modify the frame with the PDU
editor by right-clicking on any Stream and selecting Edit Frame
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Step#23: Modify the frame with the PDU editor
(optional)
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Step#24: Click the Start Test and set the Tx Load
to 500 fps. Click Run
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Check DUT for LDP neighbors and MPLS forwarding
table
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Step#25: Go to Traffic, Streams, right-click on a
stream and select View Binding Information
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Step#26: Compare the binding information on the DUT
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Note the binding information is in the range
specified in the GUI (min 100 and
200)
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Check counters in real-time and after the test stops
Step#27: Select
Port Rates and Port
Counters from the drop-down menu and note the Signature Frames sent and
received
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Step#28: Enable per-stream stats by clicking on
Result Collection and selecting All Streams. Click Ok
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Step#29: Click Apply
and select Streams from the drop-down menu
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Step#30: Set unique loads for each stream by going
to Transmit Ports, clicking in the Load section, and set the Mode to Per
Stream. Click OK.
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Step#31: Set unique frame size for each stream by
going to Transmit Ports, clicking in the Frame Size section, and set the
Mode to Per Stream. Click OK.
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Step#32: Set the Frame Size and Rate for each
stream and click Apply
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Step#33: Select Streams from the drop-down menu and
note the Tx Rate for each stream
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NOTE: the % Loss is based on the run-time
Tx/Rx rate and not the actual loss. The Lost Frames and % Loss will display
the correct results after stopping the test
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Step#34: Click the Stop Test button and wait for
the hardware to send results to the GUI
NOTE: Always note the status of the GUI in the
lower left-hand corner. The amount of time for the test to stop will vary
depending on the size and complexity of the test
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Step#35: After the test stops, select Detailed
Stream Statistics from the drop-down menu and review the Lost Frames, %
Loss, and Latency numbers
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