Cisco Cisco Expressway Maintenance Manual
Network settings
Configuring IP settings
The
IP
page (
System > IP
) is used to configure the IP protocols and network interface settings of the
Expressway.
IP protocol configuration
You can configure whether the Expressway uses IPv4, IPv6 or Both protocols. The default is Both.
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IPv4: it only takes calls between two endpoints communicating via IPv4. It communicates with other
systems via IPv4 only.
systems via IPv4 only.
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IPv6: it only takes calls between two endpoints communicating via IPv6. It communicates with other
systems via IPv6 only.
systems via IPv6 only.
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Both: it takes calls using either protocol. If a call is between an IPv4-only and an IPv6-only endpoint, the
Expressway acts as an IPv4 to IPv6 gateway. It communicates with other systems via either protocol.
Expressway acts as an IPv4 to IPv6 gateway. It communicates with other systems via either protocol.
All IPv6 addresses configured on the Expressway are treated as having a /64 network prefix length.
IPv4 to IPv6 gatewaying (interworking)
The Expressway can act as a gateway for calls between IPv4 and IPv6 devices. To enable this feature,
select an IP protocol of Both.
select an IP protocol of Both.
IP gateways and IP routes (static routes)
You can set the default IPv4 gateway and IPv6 gateway used by the Expressway. These are the gateways
to which IP requests are sent for IP addresses that do not fall within the Expressway’s local subnet.
to which IP requests are sent for IP addresses that do not fall within the Expressway’s local subnet.
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The default IPv4 gateway is 127.0.0.1, which should be changed during the commissioning process.
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The IPv6 gateway, if entered, must be a static global IPv6 address. It cannot be a link-local or a stateless
auto-configuration (SLAAC) IPv6 address.
auto-configuration (SLAAC) IPv6 address.
You can also configure additional IP routing information (static routes) on the Expressway. This is
sometimes required when using the Advanced Networking option and deploying the Expressway in a DMZ.
They may also be required occasionally in other complex network deployments.
sometimes required when using the Advanced Networking option and deploying the Expressway in a DMZ.
They may also be required occasionally in other complex network deployments.
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commands.
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You can configure routes for up to 50 network and host combinations.
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Do not configure IP routes by logging into the system as root and using "ip route" statements.
LAN configuration
LAN 1 is the primary network port on the Expressway. You can configure the IPv4 address and subnet
mask, the IPv6 address and the Maximum transmission unit (MTU) for this port.
mask, the IPv6 address and the Maximum transmission unit (MTU) for this port.
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The Expressway is shipped with a default IP address of 192.168.0.100 (for both LAN ports). This lets you
connect the Expressway to your network and access it via the default address so that you can configure it
connect the Expressway to your network and access it via the default address so that you can configure it
Cisco Expressway Administrator Guide (X8.1.1)
Page 21 of 343
Network and system settings
Network settings