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H3C DLDP Configuration Examples
Software version: Release 7951P01
Document version: 6W100-20200625
Copyright © 2020 New H3C Technologies Co., Ltd. All rights reserved.
No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of New H3C Technologies Co., Ltd.
Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this document are the property of their respective owners.
The information in this document is subject to change without notice.
Contents
Example: Configuring the auto port shutdown mode
Example: Configuring the manual port shutdown mode
Introduction
This document provides DLDP configuration examples.
The Device Link Detection Protocol (DLDP) was developed by H3C 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.
Prerequisites
The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network.
This document assumes that you have basic knowledge of DLDP.
Example: Configuring the auto port shutdown mode
Network configuration
As shown in Figure 1, Device A and Device B are connected through two fiber pairs.
Configure DLDP on the devices so each device performs the following tasks:
· Detects unidirectional links caused by cross-connected fibers or a disconnected fiber.
· Automatically shuts down the faulty interface when detecting a unidirectional link.
· Automatically brings up the interface after the administrator clears the fault.
Software versions used
This configuration example was created and verified on R7951P01.
Restrictions and guidelines
When you configure DLDP, follow these restrictions and guidelines:
· For DLDP to operate correctly, configure the full duplex mode for the interfaces at the two ends of the link, and configure the same speed for the two interfaces.
· For DLDP to operate correctly, enable DLDP on both sides and make sure the following settings are consistent:
¡ Interval to send Advertisement packets.
¡ DLDP authentication mode.
¡ Password.
Procedures
# Enable DLDP globally.
<DeviceA> system-view
[DeviceA] dldp global enable
# Configure Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 to operate in full duplex mode at 10000 Mbps, and enable DLDP on the interfaces.
[DeviceA] interface ten-gigabitethernet 3/0/1
[DeviceA-Ten-GigabitEthernet3/0/1] duplex full
[DeviceA-Ten-GigabitEthernet3/0/1] speed 10000
[DeviceA-Ten-GigabitEthernet3/0/1] dldp enable
[DeviceA-Ten-GigabitEthernet3/0/1] quit
[DeviceA] interface ten-gigabitethernet 3/0/2
[DeviceA-Ten-GigabitEthernet3/0/2] undo shutdown
[DeviceA-Ten-GigabitEthernet3/0/2] duplex full
[DeviceA-Ten-GigabitEthernet3/0/2] speed 10000
[DeviceA-Ten-GigabitEthernet3/0/2] dldp enable
[DeviceA-Ten-GigabitEthernet3/0/2] quit
# Set the interval for sending Advertisement packets to 5 seconds (default interval).
[DeviceA] dldp interval 5
# Configure the plain text authentication mode and set the password to abc.
[DeviceA] dldp authentication-mode simple
[DeviceA] dldp authentication-password simple abc
# Set the interface shutdown mode to auto (default mode).
[DeviceA] dldp unidirectional-shutdown auto
2. Configure Device B in the same way Device A is configured. (Details not shown.)
Verifying the configuration
# Display global and interface-specific DLDP configuration for Device A.
[DeviceA] display dldp
DLDP global status: Enabled
DLDP advertisement interval: 5s
DLDP authentication-mode: Simple
DLDP authentication-password: ******
DLDP unidirectional-shutdown mode: Auto
DLDP delaydown-timer value: 1s
Number of enabled ports: 2
Interface Ten-GigabitEthernet3/0/1
DLDP port state: Bidirectional
Number of the port’s neighbors: 1
Neighbor MAC address: 0023-8956-3600
Neighbor port index: 366
Neighbor state: Confirmed
Neighbor aged time: 15s
Interface Ten-GigabitEthernet3/0/2
DLDP port state: Bidirectional
Number of the port’s neighbors: 1
Neighbor MAC address: 0023-8956-3600
Neighbor port index: 361
Neighbor state: Confirmed
Neighbor aged time: 12s
The output shows that the DLDP port status of both Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 is Bidirectional.
# Enable the monitoring of logs on the current terminal for Device A, and set the lowest level of the logs that can be output to the monitor terminal to 6.
[DeviceA] quit
<DeviceA> terminal monitor
The current terminal is enabled to display logs.
<DeviceA> terminal logging level 6
As shown in Figure 2, the two pairs of fibers between Device A and Device B are cross-connected.
Figure 2 Cross-connected fibers
The following log information is displayed on Device A:
<DeviceA>%May 3 09:32:35:324 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/1 changed to down.
%May 3 09:32:35:344 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/1 changed to down.
%May 3 09:32:43:836 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/2 changed to down.
%May 3 09:32:43:853 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/2 changed to down.
%May 3 09:32:48:289 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/2 changed to up.
%May 3 09:32:54:263 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/1 changed to up.
The output shows that the physical status of both Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 is down and then up. The link status of both interfaces is down.
# Display information about interface Ten-GigabitEthernet 3/0/1 on Device A.
[DeviceA]display interface ten-gigabitethernet 3/0/1
Ten-GigabitEthernet3/0/1
Current state: UP
Line protocol state: DOWN(DLDP)
IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 00e0-fc00-5929
Description: Ten-GigabitEthernet3/0/1 Interface
Bandwidth: 10000000kbps
Loopback is not set
Media type is optical fiber, Port hardware type is 10G_BASE_SR_SFP
10Gbps-speed mode, full-duplex mode
Link speed type is autonegotiation, link duplex type is force link
Flow-control is not enabled
The Maximum Frame Length is 10000
Allow jumbo frame to pass
Broadcast MAX-ratio: 100%
Multicast MAX-ratio: 100%
Unicast MAX-ratio: 100%
PVID: 1
Mdi type: Automdix
Port link-type: Access
Tagged Vlan: None
UnTagged Vlan: 1
Port priority: 0
Last link flapping: Never
Last clearing of counters: Never
Current system time:2017-03-03 09:49:03
Last time when physical state changed to up: 2017-03-03 09:32:48
Last time when physical state changed to down: 2017-03-03 09:49:03
Peak value of input: 141 bytes/sec, at 2011-01-01 01:37:08
Peak value of output: 84 bytes/sec, at 2011-01-01 05:39:56
Last 300 seconds input: 0 packets/sec 99 bytes/sec 0%
Last 300 seconds output: 0 packets/sec 63 bytes/sec 0%
Input (total): 26470 packets, 2469445 bytes
0 unicasts, 1 broadcasts, 26469 multicasts, 0 pauses
Input (normal): 26470 packets, - bytes
0 unicasts, 1 broadcasts, 26469 multicasts, 0 pauses
Input: 0 input errors, 0 runts, 0 giants, 0 throttles
0 CRC, 0 frame, - overruns, 0 aborts
- ignored, - parity errors
Output (total): 16962 packets, 1165236 bytes
0 unicasts, 0 broadcasts, 16962 multicasts, 0 pauses
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 Ten-GigabitEthernet 3/0/1 is up, but DLDP automatically shuts down the interface. The output for interface Ten-GigabitEthernet 3/0/2 is similar to Ten-GigabitEthernet 3/0/1. (Details not shown.)
# Display global and interface-specific DLDP configuration for Device A.
<DeviceA> display dldp
DLDP global status: Enabled
DLDP advertisement interval: 5s
DLDP authentication-mode: Simple
DLDP authentication-password: ******
DLDP unidirectional-shutdown mode: Auto
DLDP delaydown-timer value: 1s
Number of enabled ports: 2
Interface Ten-GigabitEthernet3/0/1
DLDP port state: Unidirectional
Number of the port’s neighbors: 0 (Maximum number ever detected: 1)
Interface Ten-GigabitEthernet3/0/2
DLDP port state: Unidirectional
Number of the port’s neighbors: 0 (Maximum number ever detected: 1)
The output shows that the DLDP port status of both Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 is Unidirectional. DLDP has detected a unidirectional link on both interfaces.
# Correct the fiber connections. As a result, the ports shut down by DLDP automatically recover, and Device A displays the following log information:
<DeviceA>%May 3 09:16:05:742 2017 DeviceA OPTMOD/5/RX_POW_LOW: -MDC=1-Slot=3; Ten-GigabitEthernet3/0/1: RX power is low!
%May 3 09:16:05:881 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/1 changed to down.
%May 3 09:16:07:958 2017 DeviceA OPTMOD/5/RX_POW_LOW: -MDC=1-Slot=3; Ten-GigabitEthernet3/0/2: RX power is low!
%May 3 09:16:07:986 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/2 changed to down.
%May 3 09:16:11:793 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/1 changed to up.
%May 3 09:16:11:869 2017 DeviceA DLDP/6/DLDP_NEIGHBOR_CONFIRMED: -MDC=1-Slot=3; A neighbor was confirmed on interface Ten-GigabitEthernet3/0/1. The neighbor's system MAC is 0023-8956-3600, and the port index is 366.
%May 3 09:16:11:870 2017 DeviceA DLDP/6/DLDP_LINK_BIDIRECTIONAL: -MDC=1-Slot=3; DLDP detected a bidirectional link on interface Ten-GigabitEthernet3/0/1.
%May 3 09:16:11:817 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/1 changed to up.
%May 3 09:16:12:573 2017 DeviceA OPTMOD/5/RX_POW_NORMAL: -MDC=1-Slot=3; Ten-GigabitEthernet3/0/1: RX power is normal!
%May 3 09:16:13:905 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/2 changed to up.
%May 3 09:16:13:981 2017 DeviceA DLDP/6/DLDP_NEIGHBOR_CONFIRMED: -MDC=1-Slot=3; A neighbor was confirmed on interface Ten-GigabitEthernet3/0/2. The neighbor's system MAC is 0023-8956-3600, and the port index is 361.
%May 3 09:16:13:982 2017 DeviceA DLDP/6/DLDP_LINK_BIDIRECTIONAL: -MDC=1-Slot=3; DLDP detected a bidirectional link on interface Ten-GigabitEthernet3/0/2.
%May 3 09:16:13:927 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/2 changed to up.
%May 3 09:16:14:788 2017 DeviceA OPTMOD/5/RX1_POW_NORMAL: -MDC=1-Slot=3; Ten-GigabitEthernet3/0/2: RX power is normal!
The output shows that the physical status and link status of both Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 are up and their DLDP neighbors are determined. The links become bidirectional.
Configuration files
· Device A:
dldp global enable
dldp authentication-mode simple
dldp authentication-password cipher $c$3$wHDzwD/AZNW+q+otXapfZ/tUB/Wgbg==
#
interface Ten-GigabitEthernet3/0/1
port link-mode route
speed 10000
duplex full
dldp enable
#
interface Ten-GigabitEthernet3/0/2
port link-mode route
speed 10000
duplex full
dldp enable
#
· The configuration file for Device B is the same as Device A. (Details not shown.)
Example: Configuring the manual port shutdown mode
Network configuration
As shown in Figure 3, Device A and Device B are connected through two fiber pairs.
Configure DLDP on the devices to meet the following requirements:
· Each device can detect unidirectional links caused by cross-connected fibers or a disconnected fiber.
· When a unidirectional link is detected, the administrator can manually shut down the faulty port based on the connection status of the link.
· The interface recovers from failure after the administrator clears the fault and manually brings up the port.
Software versions used
This configuration example was created and verified on R7951P01.
Restrictions and guidelines
When you configure DLDP, follow these restrictions and guidelines:
· For DLDP to operate correctly, configure the full duplex mode for the interfaces at the two ends of the link, and configure the same speed for the two interfaces.
· For DLDP to operate correctly, enable DLDP on both sides and make sure the following settings are consistent:
¡ Interval to send Advertisement packets.
¡ DLDP authentication mode.
¡ Password.
Procedures
1. Configure Device A:
# Enable DLDP globally.
<DeviceA> system-view
[DeviceA] dldp global enable
# Configure Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 to operate in full duplex mode at 10000 Mbps, and enable DLDP on the interfaces.
[DeviceA] interface ten-gigabitethernet 3/0/1
[DeviceA-Ten-GigabitEthernet3/0/1] duplex full
[DeviceA-Ten-GigabitEthernet3/0/1] speed 10000
[DeviceA-Ten-GigabitEthernet3/0/1] dldp enable
[DeviceA-Ten-GigabitEthernet3/0/1] quit
[DeviceA] interface ten-gigabitethernet 3/0/2
[DeviceA-Ten-GigabitEthernet3/0/2] undo shutdown
[DeviceA-Ten-GigabitEthernet3/0/2] duplex full
[DeviceA-Ten-GigabitEthernet3/0/2] speed 10000
[DeviceA-Ten-GigabitEthernet3/0/2] dldp enable
[DeviceA-Ten-GigabitEthernet3/0/2] quit
# Set the interval for sending Advertisement packets to 5 seconds (default interval).
[DeviceA] dldp interval 5
# Configure the plain text authentication mode and set the password to abc.
[DeviceA] dldp authentication-mode simple
[DeviceA] dldp authentication-password simple abc
# Set the interface shutdown mode to manual.
[DeviceA] dldp unidirectional-shutdown manual
2. Configure Device B in the same way Device A is configured. (Details not shown.)
Verifying the configuration
# Display global and interface-specific DLDP configuration for Device A.
[DeviceA] display dldp
DLDP global status: Enabled
DLDP advertisement interval: 5s
DLDP authentication-mode: Simple
DLDP authentication-password: ******
DLDP unidirectional-shutdown mode: Manual
DLDP delaydown-timer value: 1s
Number of enabled ports: 2
Interface Ten-GigabitEthernet3/0/1
DLDP port state: Bidirectional
Number of the port’s neighbors: 1
Neighbor MAC address: 0023-8956-3600
Neighbor port index: 366
Neighbor state: Confirmed
Neighbor aged time: 12s
Interface Ten-GigabitEthernet3/0/2
DLDP port state: Bidirectional
Number of the port’s neighbors: 1
Neighbor MAC address: 0023-8956-3600
Neighbor port index: 361
Neighbor state: Confirmed
Neighbor aged time: 12s
The output shows that the DLDP port status of both Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 is Bidirectional.
# Enable the monitoring of logs on the current terminal for Device A, and set the lowest level of the logs that can be output to the monitor terminal to 6.
[DeviceA] quit
<DeviceA> terminal monitor
The current terminal is enabled to display logs.
<DeviceA> terminal logging level 6
As shown in Figure 4, the two pairs of fibers between Device A and Device B are cross-connected.
Figure 4 Cross-connected fibers
The following log information is displayed on Device A:
<DeviceA>%May 3 09:56:57:124 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/1 changed to down.
%May 3 09:56:57:143 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/1 changed to down.
%May 3 09:56:57:336 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/2 changed to down.
%May 3 09:56:57:376 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/2 changed to down.
%May 3 09:57:17:365 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/1 changed to up.
%May 3 09:57:17:365 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/1 changed to up.
%May 3 09:57:18:245 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/1 changed to up.
%May 3 09:57:18:245 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/1 changed to up.
The output shows that the physical status and link status of both Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 are down and then up.
# Display information about interface Ten-GigabitEthernet 3/0/1 on Device A.
[DeviceA] display interface ten-gigabitethernet 3/0/1
Ten-GigabitEthernet3/0/1
Current state: UP
Line protocol state: UP
IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 00e0-fc00-5929
Description: Ten-GigabitEthernet3/0/1 Interface
Bandwidth: 10000000kbps
Loopback is not set
Media type is optical fiber, Port hardware type is 10G_BASE_SR_SFP
10Gbps-speed mode, full-duplex mode
Link speed type is autonegotiation, link duplex type is force link
Flow-control is not enabled
The Maximum Frame Length is 10000
Allow jumbo frame to pass
Broadcast MAX-ratio: 100%
Multicast MAX-ratio: 100%
Unicast MAX-ratio: 100%
PVID: 1
Mdi type: Automdix
Port link-type: Access
Tagged Vlan: None
UnTagged Vlan: 1
Port priority: 0
Last link flapping: Never
Last clearing of counters: Never
Current system time:2017-03-03 09:49:03
Last time when physical state changed to up: 2017-03-03 09:32:48
Last time when physical state changed to down: 2017-03-03 09:49:03
Peak value of input: 141 bytes/sec, at 2011-01-01 01:37:08
Peak value of output: 104 bytes/sec, at 2011-01-01 06:40:58
Last 300 seconds input: 0 packets/sec 27 bytes/sec 0%
Last 300 seconds output: 1 packets/sec 101 bytes/sec 0%
Input (total): 27226 packets, 2547709 bytes
0 unicasts, 1 broadcasts, 27225 multicasts, 0 pauses
Input (normal): 27226 packets, - bytes
0 unicasts, 1 broadcasts, 27225 multicasts, 0 pauses
Input: 0 input errors, 0 runts, 0 giants, 0 throttles
0 CRC, 0 frame, - overruns, 0 aborts
- ignored, - parity errors
Output (total): 17991 packets, 1260564 bytes
0 unicasts, 0 broadcasts, 17991 multicasts, 0 pauses
Output (normal): 17991 packets, - bytes
0 unicasts, 0 broadcasts, 17991 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 and link status of Ten-GigabitEthernet 3/0/1 are up. DLDP does not shut down the interface. The output for interface Ten-GigabitEthernet 3/0/2 is similar to Ten-GigabitEthernet 3/0/1. (Details not shown.)
# Display global and interface-specific DLDP configuration for Device A.
<DeviceA> display dldp
DLDP global status: Enabled
DLDP advertisement interval: 5s
DLDP authentication-mode: Simple
DLDP authentication-password: ******
DLDP unidirectional-shutdown mode: Manual
DLDP delaydown-timer value: 1s
Number of enabled ports: 2
Interface Ten-GigabitEthernet3/0/1
DLDP port state: Unidirectional
Number of the port’s neighbors: 0 (Maximum number ever detected: 1)
Interface Ten-GigabitEthernet3/0/2
DLDP port state: Unidirectional
Number of the port’s neighbors: 0 (Maximum number ever detected: 1)
The output shows that the DLDP port status of both Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 is Unidirectional. DLDP has detected a unidirectional link on both interfaces but does not shut them down.
# Shut down Ten-GigabitEthernet 3/0/1.
<DeviceA> system-view
[DeviceA] interface ten-gigabitethernet 3/0/1
[DeviceA-Ten-GigabitEthernet3/0/1] shutdown
The following log information is displayed on Device A:
[DeviceA-Ten-GigabitEthernet3/0/1]%May 3 10:13:26:072 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/1 changed to down.
%May 3 10:13:26:072 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/1 changed to down.
%May 3 10:13:27:172 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/2 changed to down.
%May 3 10:13:27:172 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/2 changed to down.
The output shows that the physical status and link status of Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 are down.
# Shut down Ten-GigabitEthernet 3/0/2.
[DeviceA-Ten-GigabitEthernet3/0/1] quit
[DeviceA] interface ten-gigabitethernet 3/0/2
[DeviceA-Ten-GigabitEthernet3/0/2] shutdown
# Correct the fiber connections, and bring up Ten-GigabitEthernet 3/0/2.
[DeviceA-Ten-GigabitEthernet3/0/2] undo shutdown
The following log information is displayed on Device A:
[DeviceA-Ten-GigabitEthernet3/0/2]%May 3 10:20:37:016 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/2 changed to up.
%May 3 10:20:37:018 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/2 changed to up.
%May 3 10:20:37:019 2017 DeviceA DLDP/6/DLDP_NEIGHBOR_CONFIRMED: A neighbor was confirmed on interface Ten-GigabitEthernet3/0/2. The neighbor's system MAC is 0023-8956-3600, and the port index is 361.
%May 3 10:20:37:019 2017 DeviceA DLDP/6/DLDP_LINK_BIDIRECTIONAL: DLDP detected a bidirectional link on interface Ten-GigabitEthernet3/0/2.
The output shows that the physical status and link status of Ten-GigabitEthernet 3/0/2 are up and its DLDP neighbor is determined. The links become bidirectional.
# Bring up Ten-GigabitEthernet 3/0/1.
[DeviceA-Ten-GigabitEthernet3/0/2] quit
[DeviceA] interface ten-gigabitethernet 3/0/1
[DeviceA-Ten-GigabitEthernet3/0/1] undo shutdown
The following log information is displayed on Device A:
[DeviceA-Ten-GigabitEthernet3/0/1]%May 3 10:31:27:188 2017 DeviceA IFNET/3/PHY_UPDOWN: -MDC=1; Physical state on the interface Ten-GigabitEthernet3/0/1 changed to up.
%May 3 10:31:27:189 2017 DeviceA IFNET/5/LINK_UPDOWN: -MDC=1; Line protocol state on the interface Ten-GigabitEthernet3/0/1 changed to up.
%May 3 10:31:27:190 2017 DeviceA DLDP/6/DLDP_NEIGHBOR_CONFIRMED: -MDC=1-Slot=3; A neighbor was confirmed on interface Ten-GigabitEthernet3/0/1. The neighbor's system MAC is 0023-8956-3600, and the port index is 366.
%May 2 10:31:27:191 2017 DeviceA DLDP/6/DLDP_LINK_BIDIRECTIONAL: -MDC=1-Slot=3; DLDP detected a bidirectional link on interface Ten-GigabitEthernet3/0/1.
The output shows that the physical status and link status of Ten-GigabitEthernet 3/0/1 are up and its DLDP neighbor is determined. The links become bidirectional.
Configuration files
· Device A:
#
dldp global enable
dldp authentication-mode simple
dldp authentication-password cipher $c$3$wHDzwD/AZNW+q+otXapfZ/tUB/Wgbg==
dldp unidirectional-shutdown manual
#
interface Ten-GigabitEthernet3/0/1
port link-mode route
speed 10000
duplex full
dldp enable
#
interface Ten-GigabitEthernet3/0/2
port link-mode route
speed 10000
duplex full
dldp enable
#
· The configuration file for Device B is the same as Device A. (Details not shown.)
Related documentation
· H3C CR16000-F Routers High Availability Command Reference-R7951P01
· H3C CR16000-F Routers High Availability Configuration Guide-R7951P01
