H3C S7500 Series Operation Manual
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H3C S7500 Series Operation Manual

H3C S7500 Series Operation Manual

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Download this manual See also: Command Manual, Operating Manual
Operation Manual - DLDP
H3C S7500 Series Ethernet Switches
Chapter 1 DLDP Configuration .................................................................................................... 1-1
1.1 Overview ............................................................................................................................ 1-1
1.1.1 Introduction.............................................................................................................. 1-1
1.2 DLDP Fundamentals ......................................................................................................... 1-2
1.2.1 DLDP Implementation ............................................................................................. 1-2
1.2.2 DLDP Status............................................................................................................ 1-6
1.2.3 DLDP Timers........................................................................................................... 1-7
1.2.4 DLDP Operating Mode............................................................................................ 1-8
1.2.5 DLDP Neighbor State.............................................................................................. 1-8
1.2.6 Link Auto-recovery Mechanism............................................................................... 1-9
1.3 DLDP Configuration......................................................................................................... 1-10
1.3.1 Configuring DLDP ................................................................................................. 1-10
1.3.2 Resetting DLDP Status ......................................................................................... 1-12
1.3.3 Precautions During DLDP Configuration .............................................................. 1-13
1.4 DLDP Network Example .................................................................................................. 1-14

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Summary of Contents for H3C S7500 Series

  • Page 1: Table Of Contents

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Table of Contents Table of Contents Chapter 1 DLDP Configuration ....................1-1 1.1 Overview ..........................1-1 1.1.1 Introduction......................1-1 1.2 DLDP Fundamentals ......................1-2 1.2.1 DLDP Implementation ..................... 1-2 1.2.2 DLDP Status......................1-6 1.2.3 DLDP Timers......................

  • Page 2: Chapter 1 Dldp Configuration

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration Chapter 1 DLDP Configuration When configuring Device Link Detection Protocol (DLDP), go to these sections for information you are interested in: Overview DLDP Fundamentals DLDP Configuration DLDP Network Example 1.1 Overview...

  • Page 3: Dldp Fundamentals

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration SwitchA SwitchA GE2/0/3 GE2/0/3 GE2/0/4 GE2/0/4 GE2/0/3 GE2/0/3 GE2/0/4 GE2/0/4 SwitchB SwitchB Figure 1-2 Fiber broken or not connecte DLDP provides the following features: As a link layer protocol, it works together with the physical layer protocols to monitor the link status of a device.
  • Page 4 Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration Table 1-1 DLDP packet types DLDP packet type Function Notifies the neighbor devices of the existence of the local device. An advertisement packet carries only the local port...
  • Page 5 Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration DLDP packet type Function Linkdown packets are used to notify unidirectional link emergencies (a unidirectional link emergency occurs when the local port is down and the peer port is up). Linkdown packets carry only the local port information instead of the neighbor information.
  • Page 6 Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration A DLDP packet received is processed as follows: In authentication mode, the DLDP packet is authenticated and is then dropped if it fails the authentication. The packet is further processed, as described in Table 1-3.

  • Page 7: Dldp Status

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration Table 1-4 Processing procedure when no echo packet is received from the neighbor No echo packet received from the Processing procedure neighbor In normal mode, no echo packet is...

  • Page 8: Dldp Timers

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration 1.2.3 DLDP Timers Table 1-6 DLDP timers Timer Description Interval between sending advertisement packets, which can be Advertisement configured on a command line interface. sending timer By default, the timer length is 5 seconds.

  • Page 9: Dldp Operating Mode

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration Timer Description When a device in the active, advertisement, or probe DLDP state receives a port down message, it does not removes the corresponding neighbor immediately, neither does it changes to the inactive state.

  • Page 10: Link Auto-Recovery Mechanism

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration Table 1-8 Description on the two DLDP neighbor states DLDP neighbor state Description two way The link to the neighbor operates properly. The device is detecting the neighbor and the neighbor unknown state is unknown.

  • Page 11: Dldp Configuration

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration 1.3 DLDP Configuration 1.3.1 Configuring DLDP Note: For a port with DLDP enabled, you are not recommended to execute the port monitor last command on the port. If it is necessary, the value argument in this command must be less than 10.
  • Page 12 Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration To do… Use the command… Remarks Optional Set the DLDP handling mode dldp By default, the when an unidirectional link is unidirectional-shutdown handling mode detected { auto | manual }...

  • Page 13: Resetting Dldp Status

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration Note: When you use the dldp enable/dldp disable command in system view to enable/disable DLDP globally on all optical ports of the switch, this command is only valid for existing optical ports on the device, however, it is not valid for those added subsequently.

  • Page 14: Precautions During Dldp Configuration

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration To do… Use the command… Remarks Enter Ethernet port interface interface-type — view interface-number Reset the Reset the status of status of DLDP on 100 M dldp reset...

  • Page 15: Dldp Network Example

    Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration unidirectional links will not be reported and ports will not be shut down, while only the state of DLDP neighbors changes. If DLDP is enabled after unidirectional links appear, DLDP cannot detect unidirectional links.
  • Page 16 Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration <H3CA> system-view [H3CA] interface gigabitethernet 2/0/3 [H3CA-GigabitEthernet2/0/3] duplex full [H3CA-GigabitEthernet2/0/3] speed 1000 [H3CA-GigabitEthernet2/0/3] quit [H3CA] interface gigabitethernet 2/0/4 [H3CA-GigabitEthernet2/0/4] duplex full [H3CA-GigabitEthernet2/0/4] speed 1000 [H3CA-GigabitEthernet2/0/4] quit # Enable DLDP globally...
  • Page 17 Operation Manual – DLDP H3C S7500 Series Ethernet Switches Chapter 1 DLDP Configuration Note: Suppose the port works in the mandatory full duplex mode and the connection at both ends of the link is normal. After DLDP is enabled, if the optical fiber in one end is not connected, DLDP will report that the link is a unidirectional link.

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