Specifications

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Cisco Wide Area Application Services Command Reference
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Chapter 3 CLI Commands
(config) ip
To define a default domain name, use the ip domain-name command. To remove the IP default domain
name, use the no form of this command. Up to three domain names can be entered. If a request arrives
without a domain name appended in its hostname, the proxy tries to resolve the hostname by appending
name1, name2, and name3 in that order until one of these names succeeds.
The WAAS device appends the configured domain name to any IP hostname that does not contain a
domain name. The appended name is resolved by the DNS server and then added to the host table. The
WAAS device must have at least one domain name server specified for hostname resolution to work
correctly.
To specify the address of one or more name servers to use for name and address resolution, use the
ip
name-server ip-addresses command. To disable IP name servers, use the no form of this command.
For proper resolution of the hostname to the IP address or the IP address to the hostname, the WAAS
device uses DNS servers. Use the ip name-server command to point the WAAS device to a specific DNS
server. You can configure up to eight servers.
Path MTU autodiscovery discovers the MTU and automatically sets the correct value. Use the ip
path-mtu-discovery enable command to start this autodiscovery utility. By default, this feature is
enabled. When this feature is disabled, the sending device uses a packet size that is smaller than
576
bytes and the next hop MTU. Existing connections are not affected when this feature is turned on or
off.
The WAAS software supports IP Path MTU Discovery, as defined in RFC 1191. When enabled, Path
MTU Discovery discovers the largest IP packet size allowable between the various links along the
forwarding path and automatically sets the correct value for the packet size. By using the largest MTU
that the links will bear, the sending device can minimize the number of packets that it must send.
Note IP Path MTU Discovery is useful when a link in a network goes down, forcing the use of another,
different MTU-sized link. IP Path MTU Discovery is also useful when a connection is first being
established and the sender has no information at all about the intervening links.
IP Path MTU Discovery is initiated by the sending device. If a server does not support IP Path MTU
Discovery, the receiving device will have no mechanism available to avoid fragmenting datagrams
generated by the server.
Use the ip route command to add a specific static route for a network or host. Any IP packet designated
for the specified destination uses the configured route.
To configure static IP routing, use the ip route command. To remove the route, use the no form of this
command. Do not use the ip route 0.0.0.0 0.0.0.0 command to configure the default gateway; use the
ip
default-gateway command instead.
Examples The following example configures a default gateway for the WAAS device:
WAE(config)# ip default-gateway 192.168.7.18
The following example disables the default gateway:
WAE(config)# no ip default-gateway
The following example configures a static IP route for the WAAS device:
WAE(config)# ip route 172.16.227.128 255.255.255.0 172.16.227.250
The following example negates the static IP route:
WAE(config)# no ip route 172.16.227.128 255.255.255.0 172.16.227.250