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Licensing Requirements and Limitations for Service Diagnosis
Involved Network Elements
Other network elements are not required.
Licensing Requirements
Service diagnosis is a basic feature of a switch and is not under license control.
Feature Support in V200R019C10
All models of S12700 and S12700E series switches support service diagnosis.
Feature Limitations
- Service diagnosis affects system performance. Therefore, enable service diagnosis only when fault locating is required. After locating faults, immediately run the undo trace enable command to disable service diagnosis.
- Users with different services have different attributes. Create diagnosis objects for different services based on different attributes.
- DHCP service: based on the MAC address.
- AAA and NAC services: based on the MAC address, IP address, user name, user VLAN ID, access mode, or interface number.
- When the device functions as a DHCPv6 server, relay agent, or snooping device, note the following restrictions for performing a trace on a DHCPv6 client:
- A DUID can be configured for the DHCPv6 client based on the LL, LLT, or user-defined value. Currently, a trace can be performed only on the DHCPv6 client with the DUID generated based on the LL or LLT.
- When the DHCPv6 client has multiple network adapters installed, the MAC address in the DUID will be inconsistent with the MAC addresses of the network adapters. As a result, no trace can be performed on the DHCPv6 client. In this case, you need to view the DUID based on packets or view the DUID on the DHCPv6 client.