Cisco Systems 78-11741-02 Wireless Office Headset User Manual


 
Configuring Unidirectional Link Routing
UDLR Tunnel Configuration Task List
IPC-509
Cisco IOS IP Configuration Guide
On the upstream router, where the UDL can only send, you must configure the tunnel to receive.
When packets are received over the tunnel, the upper-layer protocols treat the packet as though it is
received over the unidirectional, send-only interface.
On the downstream router, where the UDL can only receive, you must configure the tunnel to send.
When packets are sent by upper-layer protocols over the interface, they will be redirected and sent
over this GRE tunnel.
To configure a UDLR tunnel on the upstream router, use the following commands beginning in global
configuration mode:
To configure a UDLR tunnel on the downstream router, use the following commands beginning in global
configuration mode:
See the “UDLR Tunnel Example” section later in this chapter for an example of how to configure a
UDLR tunnel. See the “Integrated UDLR Tunnel, IGMP UDLR, and IGMP Proxy Example” section
later in this chapter for an example of how to set up all three UDLR mechanisms in the same
configuration.
Command Purpose
Step 1
Router(config)# interface type number
Configures the unidirectional send-only interface.
Step 2
Router(config-if)# interface tunnel number
Configures the receive-only tunnel interface.
Step 3
Router(config-if)# tunnel udlr receive-only
type number
Configures the UDLR tunnel. Use the same type and number
values as the unidirectional send-only interface type and number
values specified with the interface type number command.
Step 4
Router(config-if)# tunnel source
{ip-address | type number}
Configures the tunnel source.
Step 5
Router(config-if)# tunnel destination
{hostname | ip-address}
Configures the tunnel destination.
Command Purpose
Step 1
Router(config)# interface type number
Configures the unidirectional receive-only interface.
Step 2
Router(config-if)# interface tunnel number
Configures the send-only tunnel interface.
Step 3
Router(config-if)# tunnel udlr send-only
type number
Configures the UDLR tunnel. Use the same type and number
values as the unidirectional receive-only interface type and
number values specified with the interface type number
command.
Step 4
Router(config-if)# tunnel source
{ip-address | type number}
Configures the tunnel source.
Step 5
Router(config-if)# tunnel destination
{hostname | ip-address}
Configures the tunnel destination.
Step 6
Router(config-if)# tunnel udlr
address-resolution
Enables the forwarding of ARP and NHRP.