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NE40E V800R010C10SPC500 Feature Description - System Monitor 01

This is NE40E V800R010C10SPC500 Feature Description - System Monitor
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Ping and Trace for Virtual Clusters

Ping and Trace for Virtual Clusters

If a link within a virtual cluster fails, you can locate the failure point using ping or trace to check virtual path (VP) connectivity and using ping to check virtual circuit (VC) connectivity, as shown in Figure 5-16.

A VP is a bidirectional label switched path (LSP) established between the master device and an AP in a virtual cluster and is used to forward pseudo wire (PW) packets over the public network. A VC is a PW established between the master device and an AP in a virtual cluster and is used to carry IP RAN services.

A virtual cluster supports the following ping and trace functions:

  • VP ping

    The master device sends an MPLS Echo Request packet addressed to the destination AP over the target VP. After the destination AP receives the packet and verifies the packet, the destination AP returns an MPLS Echo Reply packet to the master device.

  • VP trace

    VP trace works by sending packets with gradually increasing TTL values starting at 1 to build a list of routers that packets traverse and determine VP connectivity.

  • VC ping

    The master device sends an MPLS Echo Request packet addressed to the destination AP over the target VC. After the destination AP receives the packet and verifies the packet, the destination AP returns an MPLS Echo Reply packet to the master device.

Figure 5-16 Virtual cluster networking

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Updated: 2019-01-03

Document ID: EDOC1100055050

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