Chapter 12
Tunneling and VPNs
RUGGEDCOM ROX II
CLI User Guide
432 Adding a DMVPN Interface
If interfaces have been configured, a table or list similar to the following example appears:
ruggedcom# show running-config services nhrp interface-nhrp | tab
IFNAME ENABLED ADDRESS HOLDTIME AUTHENTICATION KEY
------------------------------------------------------------------------------------------
gre-t1 true 192.168.0.100/24 10 cisco $4$wocla9w68FRwhYYI0d4IDw==
!
!
If no interfaces have been configured, add interfaces as needed. For more information, refer to Section12.10.3.2,
“Adding a DMVPN Interface”.
Section12.10.3.2
Adding a DMVPN Interface
To add a DMVPN interface, do the following:
1. Add the interface for the desired GRE tunnel by typing:
services nhrp interface-nhrp gre-tunnel
Where gre-tunnel is the name of the desired GRE tunnel.
2. Configure the following parameter(s) as required:
CAUTION!
Security hazard – risk of unauthorized access and/or exploitation. For increased security, Siemens
recommends configuring a key to authenticate the NHRP interface.
Parameter Description
enabled A boolean flag to indicate Next Hop Resolution Protocol (NHRP) is enabled on this
interface.
address { address } Synopsis: A string 9 to 18 characters long
IPv4 address of remote GRE interface to be used for this NHRP session.
holdtime { holdtime } Synopsis: A 32-bit unsigned integer
Default: 7200
The time (in seconds) that Non-Broadcast Multi-Access (NBMA) addresses are advertised
as valid in authoritative NHRP responses. Default is 7200 seconds.
authentication { authentication } Synopsis: { none, cisco }
The authentication string to allow intercommunication between source and destination
NHRP nodes. Maximum length is 8 characters. Currently, only CISCO authentication is
supported.
key { key } Synopsis: A string
The authentication key to allow intercommunication between source and destination
NHRP nodes. Maximum length is 8 characters.
3. Type commit and press Enter to save the changes, or type revert and press Enter to abort.
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