Chapter 7 Configuration Overview
Figure 10. System Using Default Routing
SPC
PC=?
Unknown Network
STP
STP
Signaling
Gateway
SPC | SPC |
PC=1 | PC=3 |
| SPC |
| PC=2 |
7.6Resilience
7.6.1IP Port Bonding
The Signalling Gateway allows the user to configure a resilient IP connection across an IP port bonding team of two ports in an active/standby configuration. Up to two port teams may be created using the four Ethernet ports on the SIU. Each team has a single IP address configured with a primary (active) and secondary (standby) port. Any IP port on the system may be the primary port in a team and any port may be the secondary port. The primary port is a port configured with the IP address of the team and the secondary port is a port configured with a string to associate it with the primary port (see Section 6.5.17, “CNSYS” on page 57).
If the system detects that the Primary port has failed, it passes the primary’s MAC and Layer 3 address to the failover (secondary) adapter, enabling it to act as the active port in the team. On the restoration of the primary port, the secondary port is removed from service and the primary port resumes control of its MAC and IP addresses.
The subnet mask of a secondary IP address in a team is ignored. Data loss may occur between the actual failure of an IP connect and the detection of that failure and subsequent switching to the standby port. All adapters in a team should be connected to the same hub or switch with Spanning Tree (STP) set to off.
Whenever teaming is activated, or deactivated, MMI sessions using those ports are reset. An IP address may not teamed with:
•
•
•
itself
an IP address of 0.0.0.0
another IP address already acting as a primary or standby in an IP team
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