## About Internal System IP Addresses

The Storage Service Processor, each internal firewall (also known as a router), and the network terminal concentrator (NTC) has its own host name and IP address. The following names and IP addresses are reserved for these components and are configured by default.

Hardware | IP Address | Host Name
--- | --- | ---
Firewall | 10.0.0.242 | new_firewall
NTC | 10.0.0.243 | new_ntc
Storage Service Processor | 10.0.0.250 | new_sp

If you prefer not to use the reserved names and IP addresses, use the following convention to create addresses and host names.

Hardware | IP Address n = 2 | Host Name N = 0 through 7
--- | --- | ---
Firewall | `10.0.0.`n | spN_firewall
NTC | `10.0.0.`n+1 | spN_ntc
Storage Service Processor | `10.0.0.`n+8 | spN

Following this convention, the following table shows the IP address and host names for a single system, System0.

Hardware | IP Address n = 2 | Host Name N = 0 through 7
--- | --- | ---
Firewall | `10.0.0.`2 | sp0_firewall
NTC | `10.0.0.`3 | sp0_ntc
Storage Service Processor | `10.0.0.`10 | sp0

Note -

When you use the Sun StorEdge Remote Response feature, the system that has the telephone line connection must have the sp0 name assigned to it. Other systems can have any unique name from sp1 through sp7.

The naming convention for additional systems increments the IP address by 10, as shown in the following table. In addition to the names and IP addresses for the first system, the table shows the addresses for each additional system, up to the maximum of eight systems on the same internal LAN.

| Firewall Address and Name | NTC Address and Name | Storage Service Processor Address and Name
--- | --- | --- | ---
System 0 | 10.0.0.2 sp0-firewall | 10.0.0.3 sp0-ntc | 10.0.0.10 sp0
System 1 | 10.0.0.12 sp1-firewall | 10.0.0.13 sp1-ntc | 10.0.0.20 sp1
System 2 | 10.0.0.22 sp2-firewall | 10.0.0.23 sp2-ntc | 10.0.0.30 sp2
System 3 | 10.0.0.32 sp3-firewall | 10.0.0.33 sp3-ntc | 10.0.0.40 sp3
System 4 | 10.0.0.42 sp4-firewall | 10.0.0.43 sp4-ntc | 10.0.0.50 sp4
System 5 | 10.0.0.52 sp5-firewall | 10.0.0.53 sp5-ntc | 10.0.0.60 sp5
System 6 | 10.0.0.62 sp6-firewall | 10.0.0.63 sp6-ntc | 10.0.0.70 sp6
System 7 | 10.0.0.72 sp7-firewall | 10.0.0.73 sp7-ntc | 10.0.0.80 sp7

### Related Topics

- About Network Domains
- About LAN Names and IP Addresses