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Monitor and troubleshoot
Documents in this section describe tools that can help you monitor, diagnose, and troubleshoot SR Linux software. This section also includes Log Event documentation to help you interpret log messages generated by SR Linux software.
Log Events Guide
This document provides guidance for operators to interpret log events for the Nokia Service Router Linux (SR Linux).
dhcp

Monitor and troubleshoot
Documents in this section describe tools that can help you monitor, diagnose, and troubleshoot SR Linux software. This section also includes Log Event documentation to help you interpret log messages generated by SR Linux software.
- Troubleshooting Toolkit
  This document describes how to use and configure diagnostic tools for the Nokia Service Router Linux (SR Linux).
- Event Handler Guide
  This document describes the functionality and configuration for the event handler framework on the Nokia Service Router Linux (SR Linux).
- Log Events Guide
  This document provides guidance for operators to interpret log events for the Nokia Service Router Linux (SR Linux).

dhcp

dhcp6ClientAddressDeclined

Table 1. dhcp6ClientAddressDeclined properties
Property name	Value
Application name	dhcp
Event name	dhcp6ClientAddressDeclined
Default severity	notice
Message format string	DHCPv6 client running on subinterface_name was given a duplicate IPv6 address by the DHCP server server_ip
Cause	The DHCP server assigned an IPv6 address that is already in use on the same subnet
Effect	The subinterface will try to acquire a new IPv6 address

dhcp6ClientIpv6AddressValidLifetimeExpired

Table 2. dhcp6ClientIpv6AddressValidLifetimeExpired properties
Property name	Value
Application name	dhcp
Event name	dhcp6ClientIpv6AddressValidLifetimeExpired
Default severity	warning
Message format string	The IPv6 address assigned_ip obtained by the DHCPv6 client running on subinterface_name has become invalid
Cause	The DHCPv6 client was not successful in renewing or rebinding the IA_NA lease before the valid lifetime of the IPv6 address expired
Effect	The subinterface has no DHCP-assigned IPv6 address

dhcp6ClientRebindAttempted

Table 3. dhcp6ClientRebindAttempted properties
Property name	Value
Application name	dhcp
Event name	dhcp6ClientRebindAttempted
Default severity	informational
Message format string	DHCPv6 client running on subinterface_name is attempting to rebind its IA_NA lease for the IPv6 address requested_ip
Cause	The DHCPv6 client could not renew its assigned IPv6 address before the timer T2 expired
Effect	The IPv6 address may become deprecated and then invalid if the rebind is not successful

dhcp6ClientReconfigureMsgDropped

Table 4. dhcp6ClientReconfigureMsgDropped properties
Property name	Value
Application name	dhcp
Event name	dhcp6ClientReconfigureMsgDropped
Default severity	notice
Message format string	The DHCPv6 client running on subinterface_name dropped a RECONFIGURE message received from the server server_ip
Cause	The DHCPv6 client received a message that it was not supposed to receive (because it did not include a Reconfigure Accept option in its SOLICIT msg)
Effect	None

dhcp6ClientRenewSuccess

Table 5. dhcp6ClientRenewSuccess properties
Property name	Value
Application name	dhcp
Event name	dhcp6ClientRenewSuccess
Default severity	informational
Message format string	DHCPv6 client running on subinterface_name successfully renewed the IPv6 address requested_ip for a new lease duration of new_lease_time seconds from server server_ip
Cause	The DHCPv6 client received a success REPLY in response to its RENEW
Effect	The subinterface remains operational with its existing DHCP-assigned IPv6 address

dhcpClientAddressDeclined

Table 6. dhcpClientAddressDeclined properties
Property name	Value
Application name	dhcp
Event name	dhcpClientAddressDeclined
Default severity	notice
Message format string	DHCP client running on subinterface_name was given a duplicate IPv4 address by the DHCP server server_ip
Cause	The DHCP server assigned an IPv4 address that is already in use on the same subnet
Effect	The subinterface will try to acquire a new IPv4 address after a 10s delay

dhcpClientLeaseExpired

Table 7. dhcpClientLeaseExpired properties
Property name	Value
Application name	dhcp
Event name	dhcpClientLeaseExpired
Default severity	warning
Message format string	The DHCP lease for address assigned_ip obtained by the DHCP client running on subinterface_name and obtained from server server_ip has expired
Cause	The DHCP client was not successful in renewing or rebinding the lease
Effect	The subinterface has no DHCP-assigned IPv4 address

dhcpClientRebindAttempted

Table 8. dhcpClientRebindAttempted properties
Property name	Value
Application name	dhcp
Event name	dhcpClientRebindAttempted
Default severity	informational
Message format string	DHCP client running on subinterface_name is attempting to rebind its lease for the IP address requested_ip
Cause	The DHCP client could not renew its assigned IPv4 address before the timer T2 expired
Effect	The lease may expire if the rebind is not successful

dhcpClientRenewSuccess

Table 9. dhcpClientRenewSuccess properties
Property name	Value
Application name	dhcp
Event name	dhcpClientRenewSuccess
Default severity	informational
Message format string	DHCP client running on subinterface_name successfully renewed the IP address requested_ip for a new lease duration of new_lease_time seconds from server server_ip
Cause	The DHCP client received a DHCPACK response to its DHCPREQUEST
Effect	The subinterface remains operational with its existing DHCP-assigned IPv4 address

dhcpv4RelayAdminDisable

Table 10. dhcpv4RelayAdminDisable properties
Property name	Value
Application name	dhcp
Event name	dhcpv4RelayAdminDisable
Default severity	warning
Message format string	DHCPv4 Relay on sub-interface subinterface_name has changed to administrative disable state
Cause	The DHCPv4 Relay admin state has changed from enable to disable due to configuration change
Effect	The DHCPv4 Relay admin state is disable on the mentioned sub-interface

dhcpv4RelayAdminEnable

Table 11. dhcpv4RelayAdminEnable properties
Property name	Value
Application name	dhcp
Event name	dhcpv4RelayAdminEnable
Default severity	warning
Message format string	DHCPv4 Relay on sub-interface subinterface_name has changed to administrative enable state
Cause	The DHCPv4 Relay admin state has changed from disable to enable due to configuration change
Effect	The DHCPv4 Relay admin state is enable on the mentioned sub-interface

dhcpv4RelayAllDhcpv4ServersUnreachable

Table 12. dhcpv4RelayAllDhcpv4ServersUnreachable properties
Property name	Value
Application name	dhcp
Event name	dhcpv4RelayAllDhcpv4ServersUnreachable
Default severity	critical
Message format string	All DHCPv4 Servers dhcpv4_server_list configured under DHCPv4 Relay on sub-interface subinterface_name are unreachable for network instance network_instance
Cause	All The DHCPv4 Servers configured under DHCPv4 Relay are unreachable
Effect	The DHCPv4 Relay oper state is down on the mentioned sub-interface

dhcpv4RelayOperDown

Table 13. dhcpv4RelayOperDown properties
Property name	Value
Application name	dhcp
Event name	dhcpv4RelayOperDown
Default severity	critical
Message format string	DHCPv4 Relay on sub-interface subinterface_name has changed to operational down state
Cause	The DHCPv4 Relay oper state has changed from up to down
Effect	The DHCPv4 Relay oper state is down on the mentioned sub-interface

dhcpv4RelayOperUp

Table 14. dhcpv4RelayOperUp properties
Property name	Value
Application name	dhcp
Event name	dhcpv4RelayOperUp
Default severity	warning
Message format string	DHCPv4 Relay on sub-interface subinterface_name has changed to operational up state
Cause	The DHCPv4 Relay oper state has changed from down to up
Effect	The DHCPv4 Relay oper state is up on the mentioned sub-interface

dhcpv6RelayAdminDisable

Table 15. dhcpv6RelayAdminDisable properties
Property name	Value
Application name	dhcp
Event name	dhcpv6RelayAdminDisable
Default severity	warning
Message format string	DHCPv6 Relay on sub-interface subinterface_name has changed to administrative disable state
Cause	The DHCPv6 Relay admin state has changed from enable to disable due to configuration change
Effect	The DHCPv6 Relay admin state is disable on the mentioned sub-interface

dhcpv6RelayAdminEnable

Table 16. dhcpv6RelayAdminEnable properties
Property name	Value
Application name	dhcp
Event name	dhcpv6RelayAdminEnable
Default severity	warning
Message format string	DHCPv6 Relay on sub-interface subinterface_name has changed to administrative enable state
Cause	The DHCPv6 Relay admin state has changed from disable to enable due to configuration change
Effect	The DHCPv6 Relay admin state is enable on the mentioned sub-interface

dhcpv6RelayAllDhcpv6ServersUnreachable

Table 17. dhcpv6RelayAllDhcpv6ServersUnreachable properties
Property name	Value
Application name	dhcp
Event name	dhcpv6RelayAllDhcpv6ServersUnreachable
Default severity	critical
Message format string	All DHCPv6 Servers dhcpv6_server_list configured under DHCPv6 Relay on sub-interface subinterface_name are unreachable for network instance network_instance
Cause	All The DHCPv6 Servers configured under DHCPv6 Relay are unreachable
Effect	The DHCPv6 Relay oper state is down on the mentioned sub-interface

dhcpv6RelayOperDown

Table 18. dhcpv6RelayOperDown properties
Property name	Value
Application name	dhcp
Event name	dhcpv6RelayOperDown
Default severity	critical
Message format string	DHCPv6 Relay on sub-interface subinterface_name has changed to operational down state
Cause	The DHCPv6 Relay oper state has changed from up to down
Effect	The DHCPv6 Relay oper state is down on the mentioned sub-interface

dhcpv6RelayOperUp

Table 19. dhcpv6RelayOperUp properties
Property name	Value
Application name	dhcp
Event name	dhcpv6RelayOperUp
Default severity	warning
Message format string	DHCPv6 Relay on sub-interface subinterface_name has changed to operational up state
Cause	The DHCPv6 Relay oper state has changed from down to up
Effect	The DHCPv6 Relay oper state is up on the mentioned sub-interface

giAddressMismatch

Table 20. giAddressMismatch properties
Property name	Value
Application name	dhcp
Event name	giAddressMismatch
Default severity	critical
Message format string	Gi-Address for DHCPv4 Relay on sub-interface subinterface_name does not match any of the configured IPv4 addresses under sub-interface
Cause	The gi-address for DHCPv4 Relay does not match any of the configured IPv4 addresses under sub-interface
Effect	The DHCPv4 Relay oper state is down on the mentioned sub-interface

sourceAddressMismatch

Table 21. sourceAddressMismatch properties
Property name	Value
Application name	dhcp
Event name	sourceAddressMismatch
Default severity	critical
Message format string	source-address for DHCPv6 Relay on sub-interface subinterface_name does not match any of the configured IPv6 addresses under sub-interface
Cause	The source-address for DHCPv6 Relay does not match any of the configured IPv6 addresses under sub-interface
Effect	The DHCPv6 Relay oper state is down on the mentioned sub-interface