Modifying tunnel hop limits for a specific tunnel

Modify tunnel hop limits to update hop-limit values on previously configured tunnels.

Use this procedure to modify the hop limits for a specific tunnel interface.

About this task

The tunnel hop limit configures the value of the time-to-live (TTL) for IPv4 packets.

Procedure

In the navigation pane, expand the Configuration > IPv6 folders.
Click Tunnel.
Click the Tunnel Config tab.
Select the tunnel row.
Click Tunnel Interface.
Double-click the HopLimit value to modify the information as required.
Click Apply.

Tunnel Interface field descriptions

Use the data in the following table to use the Tunnel Interface tab.


Name	Description
Index	Identifies the tunnel interface internally. The value is derived from the tunnel ID.
EncapsMethod	Displays the encapsulation method for the tunnel: manual for manually configured tunnels and 6to4 for automatically configured tunnels.
HopLimit	Configures the maximum number of hops in the tunnel. The default value is 255.
Security	Indicates the type of security on the tunnel interface.
TOS	Displays the method used to configure the high 6 bits (the differentiated services codepoint) of the IPv4 type of service (TOS) or IPv6 traffic class in the outer IP header. A value of -1 indicates that the bits are copied from the payload header. A value of -2 indicates that a traffic conditioner is invoked and more information can be available in a traffic conditioner MIB module. A value from 0 to 63 indicates that the bit field is configured to the indicated value.
FlowLabel	Displays the method used to configure the IPv6 flow label value. This object is not required where AddressType indicates the tunnel is not over IPv6. A value of -1 indicates that a traffic conditioner is invoked and more information can be available in a traffic conditioner MIB. Any other value indicates that the flow label field is configured to the indicated value.
AddressType	Displays manual for a manually configured tunnel, or sixToFour for autoconfigured tunnels.
LocalInetAddress	Identifies the local endpoint address of the tunnel.
RemoteInetAddress	Identifies the remote endpoint of the tunnel.
EncapsLimit	Displays the maximum number of additional encapsulations permitted for packets undergoing encapsulation at this node. A value of -1 indicates that no limit exists, except as a result of the packet size.