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Introduction This document provides DLDP configuration examples. The Device Link Detection Protocol (DLDP) was developed by HP to detect the status of fiber links or twisted-pair links. When DLDP detects unidirectional links, it can automatically shut down the faulty port to avoid network problems. Alternatively, a user can manually shut down the faulty port. Restrictions and guidelines When you configure DLDP, follow these restrictions and guidelines: •...
Figure 1 Network diagram Device A Device B HGE1/0/1 HGE1/0/1 HGE1/0/2 HGE1/0/2 Ethernet Tx end Rx end Fiber link fiber port Software versions used This configuration example was created and verified on R3203. Procedures Configure Device A: # Enable DLDP globally. <DeviceA>...
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DLDP authentication-password: ****** DLDP unidirectional-shutdown mode: Auto DLDP delaydown-timer value: 1s Number of enabled ports: 2 Interface HundredGigE1/0/1 DLDP port state: Bidirectional DLDP port unidirectional-shutdown mode: None DLDP initial-unidirectional-delay: 100s Number of the port’s neighbors: 1 Neighbor MAC address: 0023-8956-3600 Neighbor port index: 1 Neighbor state: Confirmed Neighbor aged time: 11s...
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%Jul 11 17:40:31:677 2019 DeviceA IFNET/3/PHY_UPDOWN: Physical state on the interface HundredGigE1/0/2 changed to down. %Jul 11 17:40:31:678 2019 DeviceA IFNET/5/LINK_UPDOWN: Line protocol state on the interface HundredGigE1/0/2 changed to down. %Jul 11 17:40:38:544 2019 DeviceA IFNET/3/PHY_UPDOWN: Physical state on the interface HundredGigE1/0/1 changed to up.
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Output (normal): 16962 packets, - bytes 0 unicasts, 0 broadcasts, 16962 multicasts, 0 pauses Output: 0 output errors, - underruns, - buffer failures 0 aborts, 0 deferred, 0 collisions, 0 late collisions 0 lost carrier, - no carrier The output shows that the physical status of HundredGigE 1/0/1 is up, but DLDP automatically shuts down the interface.
%Jul 11 17:43:02:362 2019 DeviceA DLDP/6/DLDP_NEIGHBOR_CONFIRMED: A neighbor was confirmed on interface HundredGigE1/0/2. The neighbor's system MAC is 0023-8956-3600, and the port index is 2. %Jul 11 17:43:02:362 2019 DeviceA DLDP/6/DLDP_LINK_BIDIRECTIONAL: DLDP detected a bidirectional link on interface HundredGigE1/0/2. %Jul 11 17:43:02:368 2019 DeviceA IFNET/5/LINK_UPDOWN: Line protocol state on the interface HundredGigE1/0/2 changed to up.
Figure 3 Network diagram Device A Device B HGE1/0/1 HGE1/0/1 HGE1/0/2 HGE1/0/2 Ethernet Tx end Rx end Fiber link fiber port Software versions used This configuration example was created and verified on R3203. Procedures Configure Device A: # Enable DLDP globally. <DeviceA>...
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DLDP authentication-password: ****** DLDP unidirectional-shutdown mode: Manual DLDP delaydown-timer value: 1s Number of enabled ports: 2 Interface HundredGigE1/0/1 DLDP port state: Bidirectional DLDP port unidirectional-shutdown mode: None DLDP initial-unidirectional-delay: 100s Number of the port’s neighbors: 1 Neighbor MAC address: 0023-8956-3600 Neighbor port index: 1 Neighbor state: Confirmed Neighbor aged time: 11s...
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%Jul 12 08:29:17:800 2019 DeviceA IFNET/3/PHY_UPDOWN: Physical state on the interface HundredGigE1/0/2 changed to down. %Jul 12 08:29:17:800 2019 DeviceA IFNET/5/LINK_UPDOWN: Line protocol state on the interface HundredGigE1/0/2 changed to down. %Jul 12 08:29:25:004 2019 DeviceA IFNET/3/PHY_UPDOWN: Physical state on the interface HundredGigE1/0/1 changed to up.
%Jul 12 08:34:23:779 2019 DeviceA IFNET/5/LINK_UPDOWN: Line protocol state on the interface HundredGigE1/0/2 changed to down. The output shows that the physical status and link status of HundredGigE 1/0/1 and HundredGigE 1/0/2 are down. # Shut down HundredGigE 1/0/2. [DeviceA-HundredGigE1/0/1] quit [DeviceA] interface hundredgige 1/0/2 [DeviceA-HundredGigE1/0/2] shutdown # Correct the fiber connections, and bring up HundredGigE 1/0/2.
interface HundredGigE1/0/1 port link-mode bridge speed 100000 duplex full dldp enable interface HundredGigE1/0/2 port link-mode bridge speed 100000 duplex full dldp enable • The configuration file for Device B is the same as Device A. (Details not shown.) Example: Configuring the hybrid port shutdown mode Network configuration As shown in...
[DeviceA-HundredGigE1/0/1] duplex full [DeviceA-HundredGigE1/0/1] speed 100000 [DeviceA-HundredGigE1/0/1] dldp enable [DeviceA-HundredGigE1/0/1] quit # Configure HundredGigE 1/0/2 to operate in full duplex mode and at 100000 Mbps, and enable DLDP on the port. [DeviceA] interface hundredgige 1/0/2 [DeviceA-HundredGigE1/0/2] duplex full [DeviceA-HundredGigE1/0/2] speed 100000 [DeviceA-HundredGigE1/0/2] dldp enable [DeviceA-HundredGigE1/0/2] quit # Set the interval for sending Advertisement packets to 5 seconds, configure the DLDP...
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Neighbor MAC address: 0023-8956-3600 Neighbor port index: 2 Neighbor state: Confirmed Neighbor aged time: 12s Neighbor echo time: - The output shows that both HundredGigE 1/0/1 and HundredGigE 1/0/2 are in bidirectional state, which means both links are bidirectional. # Enable the monitoring of logs on the current terminal on Device A. Set the lowest level of the logs that can be output to the current terminal to 6.
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IP packet frame type: Ethernet II, hardware address: 00e0-fc00-5929 Description: HundredGigE1/0/1 Interface Bandwidth: 100000000kbps Loopback is not set Media type is optical fiber, Port hardware type is 100G_BASE_SR_SFP 100Gbps-speed mode, full-duplex mode Link speed type is force link, link duplex type is force link Flow-control is not enabled Maximum frame length: 9216 Allow jumbo frame to pass...
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DLDP delaydown-timer value: 1s Number of enabled ports: 2 Interface HundredGigE1/0/1 DLDP port state: Unidirectional DLDP port unidirectional-shutdown mode: None DLDP initial-unidirectional-delay: 0s Number of the port’s neighbors: 0 (Maximum number ever detected: 1) Interface HundredGigE1/0/2 DLDP port state: Unidirectional DLDP port unidirectional-shutdown mode: None DLDP initial-unidirectional-delay: 0s Number of the port’s neighbors: 0 (Maximum number ever detected: 1)
• The configuration file for Device B is the same as Device A. (Details not shown.) Related documentation • H3C S12500X-AF Switch Series High Availability Configuration Guide-R320x • H3C S12500X-AF Switch Series High Availability Command Reference-R320x...
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