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Cisco Content Services Switch Routing and Bridging Configuration Guide
OL-8241-02
Chapter6 Configuring the Internet Protocol
Configuring an IP Source Route
For example:
(config)# ip no-implicit-service
To reset the default setting, enter:
(config)# no ip no-implicit-service
Configuring an IP Source Route
To enable the CSS to process frames with information that overrides the default
routing, use the ip source-route command. For example:
(config)# ip source-route
Caution Enabling the ip source-route command may pose a major security risk to your
network. The IP source route specifies information that overrides the default
routing a packet would normally take. The packet could then bypass a firewall. If
this poses a problem, avoid using the ip source-route command.
The CSS does not load balance TCP or UDP packets with IP options that are
destined to a VIP address. These packet types are dropped and the CSS returns an
ICMP destination/port unreachable error. This behavior exists regardless of the
state (enabled or disabled) of the ip source-route and ip record-route
commands.
The CSS, however, does respond to ICMP packets that are destined to a VIP
address. The CSS also responds to TCP or UDP packets that include IP options
that are destined to a local circuit address, or require that a routing decision be
made.
To disable the processing of frames with the IP source-route option (the default
behavior), enter:
(config)# no ip source-route