Enterasys Networks X-Pedition XSR CLI - Manual (Page 580)

Interface VPN Commands
14-126 Configuring the VPN
ip address negotiated
This command marks the VPN interface to dynamically get its IP address via the tunnel protocol.
PPTP and L2TP protocols use PPP IPCP and IPSec/IKE uses the Mode Configuration protocol.
Syntax
ip address negotiated
Syntax of the “no” Form
no ip address negotiated
Mode
Interface Internet Protocol configuration: XSR(config-int)#
Example
The following example sets the VPN interface to get its IP address from the tunnel protocol:
XSR(config)#interface vpn 57 point-to-point
XSR(config-int)#ip address negotiated
ip multicast-redirect
This command controls redirection of multicast packets to the unicast address of the remote
tunnel endpoint or to an explicitly defined address such as another IP address at the end of an
unnumbered tunnel. The command is useful because native IPSec tunnels attached to VPN
interfaces will not easily forward multicast traffic without substantial crypto map configuration.
Multicast redirection must be enabled to support RIP over IPSec tunnels when explicit multicast
policy rules are not included in the Security Policy Database. Redirection is not required for PPTP
and L2TP tunnels.
Syntax
ip multicast-redirect [tunnel-endpoint | ip-address]
Syntax of the “no” Form
The no form of the command disables multicast packet redirection and allows multicast traffic to
flow through the tunnel without modification:
no ip multicast-redirect [tunnel-endpoint | ip-address]
Note: Multicast redirection, if enabled, applies to all tunnels terminating at a point-to-multipoint VPN
interface.
tunnel-endpoint Redirects multicast to the remote tunnel endpointʹs IP address as
dynamically set during tunnel creation.
ip-address Redirects multicast traffic to an explicit, predefined address.