Cisco Cisco Expressway Maintenance Manual
Configuring Quality of Service Settings
The Quality of Service (QoS) page (System > Quality of Service) is used to configure QoS options for outbound
traffic from the Expressway.
traffic from the Expressway.
This allows the network administrator to tag all signaling and media packets flowing through the Expressway with one
specific QoS tag and hence provide the ability to prioritize video traffic over normal data traffic. Management traffic,
for example SNMP messages, is not tagged.
specific QoS tag and hence provide the ability to prioritize video traffic over normal data traffic. Management traffic,
for example SNMP messages, is not tagged.
Supported mechanisms
The Expressway supports the DiffServ (Differentiated Services) mechanism which puts the specified Tag value in the
TOS (Type Of Service) field of the IPv4 header or TC (Traffic Class) field of the IPv6 header.
TOS (Type Of Service) field of the IPv4 header or TC (Traffic Class) field of the IPv6 header.
Static Routes
You can define static routes from the Expressway to an IPv4 or IPv6 address range. Go to System > Network
interfaces > Static routes.
interfaces > Static routes.
On this page you can view, add, and delete static routes.
Static routes are sometimes required when using the Advanced Networking option and deploying the Expressway in
a DMZ. They may also be required in other complex network deployments.
a DMZ. They may also be required in other complex network deployments.
To add a static route:
1.
Enter the base destination address of the new static route from this Expressway
For example, enter
203.0.113.0
or
2001:db8::
2.
Enter the prefix length that defines the range
Extending the example, you could enter
24
to define the IPv4 range 203.0.113.0 - 203.0.113.255, or
32
to
define the IPv6 range 2001:db8:: to 2001:db8:ffff:ffff:ffff:ffff:ffff:ffff.
The address range field shows the range calculated by the Expressway from the IP address and Prefix length.
3.
Enter the IP address of the gateway for your new route
4.
Select an ethernet interface for your new route
This option is only available if the second ethernet interface is enabled. Select LAN 1 or LAN 2 to force the
route via that interface, or select Auto to allow the Expressway to make this route on either interface.
route via that interface, or select Auto to allow the Expressway to make this route on either interface.
5.
Click Create route
The new static route is listed in the table. You can delete routes from this table if necessary.
Notes
■
commands.
■
You can configure routes for up to 50 network and host combinations.
■
Do not configure IP routes by logging in as
root
and using
ip route
statements.
Intrusion Protection
Configuring Firewall Rules
Firewall rules provide the ability to configure IP table rules to control access to the Expressway at the IP level. On the
Expressway, these rules have been classified into groups and are applied in the following order:
Expressway, these rules have been classified into groups and are applied in the following order:
■
Dynamic system rules: these rules ensure that all established connections/sessions are maintained. They also
include any rules that have been inserted by the automated detection feature as it blocks specific addresses.
include any rules that have been inserted by the automated detection feature as it blocks specific addresses.
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Cisco Expressway Administrator Guide
Network and System Settings