Hello, everyone!
This time, I will give you all the information about the NE ID.
What is NE ID
An NE ID identifies an NE on the management plane and uniquely identifies an NE in DCN communication.
An NE ID consists of 32 bits. The 8 most significant bits are reserved for future use. The 8 seconds most significant bits represent the extended ID (also called the subnet ID) to identify the subnet that the NE belongs to. The 16 least significant bits represent the basic ID of the NE. For example, if the NE ID is 0x00090001, the extended ID is 9 and the basic ID is 1.
The NE ID must be set according to the network plan and must be unique on the entire network. One NE ID cannot conflict with other NE IDs. In addition, the default NE ID should not be used. The recommended value range of the NE ID is as follows:
1. The extended ID is within the range of 0x90 to 0xFE range, which corresponds to the range of 144 to 254 in decimal format.
2. The basic ID is within the range of 0x6001 to 0xBFEF, which corresponds to the range of 24577 to 49135 in decimal format.
When planning an NE ID, you are advised to change the factory default NE ID as follows to avoid an NE ID conflict:
1. Set the extended ID to the range from 0x1 to 0x8F, which corresponds to the range from 1 to 143 in decimal format.
2. Set the basic ID to the range from 0x1 to 0x6000, which corresponds to the range from 1 to 24576 in decimal format.
How to change the NE ID
1. Change the ND ID through the NMS.
For details, please click How to Change the NE ID on Web LCT
2. Change the NE ID using commands.
Run the cm-set-neid command to change the NE ID. For example:
cm-set-neid:0x090001
Note: "0x09" is the extended ID and "0001" is the basic ID. They're all hexadecimal numbers. The value of this parameter must be converted to a decimal number.
Precautions for Changing the NE ID
1. Changing the ID of an NE is a risky operation because it causes the NE to be reset, which further results in an NE communication failure during the reset.
2. An NE ID conflict leads to the unreachability of NEs. Therefore, the ID of an NE must be unique on the network.
3. The NE ID cannot be changed if the following features and logical relationships are performed on the NE: client 1+1 protection group, intra-board 1+1 protection group, OWSP protection group, optical line protection group, IPA, ALC, APE, OPA, wavelength locking, OD, ECC communication, inter-NE fiber connection, monitoring relationships between the manually added WMU and OTU boards, as well as FO810 logical boards. If you need to change the NE ID, you must delete these features and logical relationships, and then change the NE ID and restore the settings.
4. After changing the NE ID and resetting the NE, log in to the NE again, otherwise, when you change the IP, an error message will be displayed prompting that you have not logged in to the NE.
5. Properly plan the network subnet to prevent the ECC subnet from being too large. Generally, a large subnet results in unstable links and long route aging time. The NE ID that has been changed is still displayed for a long time.
6. The route distance of the NE is changed to the default value 64. However, once the number of ECC communication channels exceeds 15, ECC communication is interrupted. If the network scale is small, it is recommended that you run the cm-set-maxdist command to change the maximum number of ECC routes to 10 to speed up route aging.
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Thank you！
