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Configuring the Management Port
ETEP Installation Guide 49
The Ethernet management port IP address identifies the ETEP to the management workstation. The
subnet mask is the portion of the IP address that identifies the network or subnetwork for routing
purposes.
When the ETEP management port and the management workstation are on different subnets, the ETEP
uses a default gateway to route packets to the other devices. The default gateway identifies the local
router port that is on the same subnet as the ETEP Ethernet management port. The appliance sends all
packets to the specified router for forwarding to the management station or other EncrypTight
components (key generation server, time server). When the management port and workstation are on the
same subnet a default gateway is not needed to route packets between the devices.
Figure 34 shows an example of a default gateway when the management station and ETEP are on
different subnets. The management station’s IP address is 192.168.1.10, and the ETEP’s management port
IP address is 192.168.10.10. To send packets between the two devices, the local port on Router #1 is
specified as the default gateway (192.168.10.1). The gateway address must match the subnet of the
management port.
Figure 34 Management Port Default Gateway
About auto-negotiation
The default setting for the ETEP enables auto-negotiation, which negotiates the link speed, duplex setting,
and flow control. Use the autoneg command if the device that the ETEP connects to from a particular
port does not support auto-negotiation or flow control.
It is important to configure the ETEP and the other device the same way. Both devices should either auto-
negotiate or be set manually to the same speed and duplex mode. Having one device set manually and the
other auto-negotiate can cause problems that make the link perform slowly. When manually setting the
ETEP link speed, configure the speed and duplex mode to match that of the other device.
On the management port, the ETEPs can negotiate to the following link speeds:
Table 18 Link speeds on the management port
Link speed
Auto-negotiate
ET0010A
Auto-negotiate
ET0100A, ET1000A
Fixed Speed
All ETEPs
10 Mbps Half-duplex
3 3 3
10 Mbps Full-duplex
3 3 3
100 Mbps Half-duplex
3 3 3
100 Mbps Full-duplex
3 3 3