Routing considerations

When you configure any of the protocols for event notifications, consider these routing decisions.

Routing considerations for event notification and Network Time Protocol

The system supports the following protocols that make outbound connections:
  • Email
  • Simple Network Mail Protocol (SNMP)
  • Syslog
  • Network Time Protocol (NTP).
These protocols operate only on a port that is configured with a management IP address. When it is making outbound connections, the system uses the following routing decisions:
  • If the destination IP address is in the same subnet as one of the management IP addresses, the system sends the packet immediately through the Ethernet port with the matching subnet as the destination IP.
  • If the destination IP address is not in the same subnet as either of the management IP addresses, the system sends the packet to the default gateway for Ethernet port 1.
  • If the destination IP address is not in the same subnet as either of the management IP addresses and Ethernet port 1 is not connected to the Ethernet network, the system sends the packet to the default gateway for Ethernet port 2.

When you configure any of these protocols for event notifications, use these routing decisions to ensure that error notification works correctly if the network fails.