Cisco Service Provider VPN Services: EoMPLS Configuration Troubleshooting

Matching Parameters for EoMPLS Configuration Problems

Question

While troubleshooting EoMPLS configuration problems, which three parameters should an engineer match between the two ends of the pseudowire configurations? (Choose three.)

Answers

Explanations

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A. B. C. D. E. F.

DEF.

https://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/mpls/213238-mpls-l2vpn-pseudowire.html

When troubleshooting EoMPLS (Ethernet over Multiprotocol Label Switching) configuration issues, it is important for the engineer to match certain parameters between the two ends of the pseudowire configuration to ensure proper functioning. Here are the three parameters that an engineer should match:

  1. Xconnect Group Name: The Xconnect group name identifies the pseudowire between the two endpoints. The same name must be configured on both endpoints for the pseudowire to function properly.

  2. Pseudowire ID: Pseudowire ID is a unique identifier that identifies the individual pseudowire in a specific Xconnect group. Both endpoints must have the same pseudowire ID configured to ensure proper communication between them.

  3. MTU Size: The maximum transmission unit (MTU) size specifies the largest packet size that can be transmitted without fragmentation. Both endpoints must have the same MTU size configured to ensure that packets are not dropped due to size mismatches.

The other answer options, which are not correct, are:

  • VLAN name: VLAN names are not used in EoMPLS configuration.
  • EFP subinterface number: EFP (Ethernet Flow Point) subinterface numbers are used in service provider networks to separate different customer traffic flows, but they are not used in pseudowire configuration.
  • Control Word Usage: The control word is an optional field in the pseudowire header that can be used for various purposes, such as improving performance or providing security. However, it is not a required parameter to match between the endpoints.