H3C S9500 Series Operation Manual
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H3C S9500 Series Operation Manual

H3C S9500 Series Operation Manual

Routing switches
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Download this manual See also: Command Manual, Operating Manual
Operation Manual - MPLS OAM
H3C S9500 Series Routing Switches
Chapter 1 MPLS OAM Configuration........................................................................................... 1-1
1.1 MPLS OAM Overview........................................................................................................ 1-1
1.1.1 MPLS OAM Background ......................................................................................... 1-1
1.1.2 MPLS OAM Packet Types and Formats ................................................................. 1-2
1.1.3 MPLS OAM Capabilities.......................................................................................... 1-5
1.1.4 References .............................................................................................................. 1-7
1.2 MPLS OAM Configuration ................................................................................................. 1-7
1.2.1 MPLS OAM Configuration Task List ....................................................................... 1-7
1.2.2 Configuring MPLS OAM Basic Capability ............................................................... 1-7
1.2.3 Configuring a Protection Group............................................................................... 1-9
1.3 Displaying and Debugging MPLS OAM Basic Capability ................................................ 1-10
1.4 Typical MPLS OAM Configuration Example.................................................................... 1-11
1.5 Troubleshooting MPLS OAM ........................................................................................... 1-16
1.5.1 Failure to Enable OAM on the Ingress Node ........................................................ 1-16
1.5.2 Failure to Enable OAM on the Egress Node......................................................... 1-16
1.5.3 Abnormal Verification Occurs on the Egress Node............................................... 1-17
back ................................................................................................................................ 1-19

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  • Page 1: Table Of Contents

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Table of Contents Table of Contents Chapter 1 MPLS OAM Configuration................... 1-1 1.1 MPLS OAM Overview......................1-1 1.1.1 MPLS OAM Background ..................1-1 1.1.2 MPLS OAM Packet Types and Formats ..............1-2 1.1.3 MPLS OAM Capabilities..................

  • Page 2: Chapter 1 Mpls Oam Configuration

    Typical MPLS OAM Configuration Example Troubleshooting MPLS OAM Note: Currently the H3C S9500 series routing switches do not support the FFD. 1.1 MPLS OAM Overview Operation, administration and maintenance (OAM) is a tool designed for monitoring and troubleshooting network problems. It provides an effective way of reducing network maintenance costs.

  • Page 3: Mpls Oam Packet Types And Formats

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration 1.1.2 MPLS OAM Packet Types and Formats MPLS OAM packets fall into four types: connectivity verification (CV), fast failure detection (FFD), forward defect indication (FDI) and backward defect indication (BDI).
  • Page 4 Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration II. OAM FFD packets Like CV packets, you also can verify the LSP connectivity by checking the OAM FFD packets sent from the ingress node of an LSP arrive at the egress node.
  • Page 5 Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration Function type (02Hex) Reserved (00Hex) Defect type TTSI (optional, if not used set to all 00Hex) (20 octets) Defect location (4 octets) Padding (all 00Hex)

  • Page 6: Mpls Oam Capabilities

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration Function type (03Hex) Reserved (00Hex) Defect type TTSI (optional, if not used set to all 00Hex) (20 octets) Defect location (4 octets) Padding (all 00Hex)
  • Page 7 Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration immediately. If a protection group is configured properly, the corresponding protection switching would also be triggered. When configuring MPLS OAM basic capability, you need to bind a reverse channel to the LSP to be verified.

  • Page 8: References

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration Share mesh protection: This protection mode is designed for saving bandwidth in the mesh network topology. In short, an LSP is used as the secondary LSP for multiple LSPs.
  • Page 9 Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration Configure MPLS basic capabilities, refer to MPLS Configuration. Configure static LSPs, refer to MPLS Configuration. Data preparation To configure MPLS OAM basic capability, prepare the following data:...

  • Page 10: Configuring A Protection Group

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration Note: This operation also can be used for modifying MPLS OAM parameters. The configuration of MPLS OAM parameters takes effect only after the MPLS OAM function is enabled.

  • Page 11: Displaying And Debugging Mpls Oam Basic Capability

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration The data flow is on the primary LSP if both the primary and secondary LSPs in one protection group fail. When the primary LSP is in the up/no-defect state and the secondary LSP is in the down, in-defect, or down/in-defect state, the data flow is on the primary LSP.

  • Page 12: Typical Mpls Oam Configuration Example

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration To do… Use the command... Remarks Display MPLS OAM display mpls oam egress { all | Alailable in information on the egress lsp-name lsp-name } [ slot slot-id |...
  • Page 13 Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration node Switch A of defect verification results, and switches data flows to the secondary LSP. In this case, only Switch A and Switch C need to support MPLS OAM, Switch B, Switch D and Switch E do not.
  • Page 14 Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration II. Networking diagram L oo pb a ck0 4.4 .4 .4/3 2 V LA N3 4 34 .1.1 .1/2 4 VL A N1 4 1 4 .1 .1.2 /24...
  • Page 15 Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration [SwitchA] mpls oam ingress lsp-name LspAtCw lsp-id 100 [SwitchA] mpls oam ingress lsp-name LspAtCp lsp-id 200 # Configure a protection group. [SwitchA] mpls protect-switch 1 work-lsp lspAtCw protect-lsp lspAtCp holdoff...
  • Page 16 Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration Lsp ingress lsr-id : 1.1.1.1 Auto-protocol :Disable Auto-overtime Ttsi/lsr-id : 1.1.1.1 Ttsi/lsp-id : 100 oam detect information: oam backward information: -------------------------------------------------------------------------- Type : CV Share attribute...

  • Page 17: Troubleshooting Mpls Oam

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration Using the display mpls protect-switch all command on Switch A, you will see that data flows are switched to the secondary LSP. [SwitchA] display mpls protect-switch all...

  • Page 18: Abnormal Verification Occurs On The Egress Node

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration [ private | share ] ] command on the egress node to configure OAM parameters for the LSP to be verified. Execute the display mpls oam egress [ all | lspname lsp-name ] command to display OAM parameters configured in step 1.

  • Page 19: The Defects Of The Ingress Node Cannot Trigger Protection Switching

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration the display mpls oam ingress [ all | lsp-name lsp-name ] verbose command on the ingress node, the defect-sate field displays No-defect. II. Solution The reason for this problem may come from: The reverse channel is not configured or down.

  • Page 20: The Primary Lsp Recovered From A Defect, But The Protection Group Cannot Switch Back

    Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration Execute the display mpls protect-switch [ all | protect-id ] verbose command. If the Working LSP User Plane Status is No-defect, which means the primary LSP configured in the protection group is not the one for OAM defect verification.
  • Page 21 Operation Manual – MPLS OAM H3C S9500 Series Routing Switches Chapter 1 MPLS OAM Configuration trigger switch back after the primary LSP recovered from a defect, you should use the mpls protect-switch command to set WTR to zero. 1-20...

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