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AlliedWare™ OS
Configure Dynamic Routing Over An L2TP Tunnel
How To |
Introduction
This How To Note shows an example of using a dynamic routing protocol over an L2TP
tunnel.
Running dynamic routing protocols over a secure Internet connection can be a complex
issue, with the possibility of intermittent connections causing routing problems.
OSPF (or BGP) are more connection-oriented than RIP and therefore are more susceptible
to problems caused by intermittent loss of connection between 'neighbours'. A neighbour
that may bounce up and down can cause havoc to the correct propagation of OSPF routing
information for a network.
The following example scenario is for setting up RIP over an L2TP tunnel. RIP is simpler and
has less overhead and control, so it provides a more robust setup as a dynamic routing
protocol over an L2TP tunnel.
Which products does it apply to?
This Note applies to the following Allied Telesis routers, running software version 2.6.1 or
later:
AR400 series
AR700 series
C613-16037-00 REV C
www.alliedtelesis.com
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Related Manuals for Allied Telesis L2TP Tunnel
Summary of Contents for Allied Telesis L2TP Tunnel
- Page 1 OSPF routing information for a network. The following example scenario is for setting up RIP over an L2TP tunnel. RIP is simpler and has less overhead and control, so it provides a more robust setup as a dynamic routing protocol over an L2TP tunnel.
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Page 2: Related How To Notes
You may also find the following How To Notes useful: How To Configure Remote L2TP Tunnels How To Configure Allied Telesis and Cisco Routers To Interoperate Over L2TP How To Notes are available from www.alliedtelesis.com/resources/literature/howto.aspx. An example scenario for RIP over L2TP Our example uses two office sites that are connected via a WAN connection over the Internet using an L2TP tunnel for security. -
Page 3: Network Operation
Network Operation There is a single static route configured to bring up the L2TP tunnel and a secure point-to- point connection (PPP0) is established over the L2TP tunnel between the 'Central' and 'Remote' office routers. This allows secure communication between the offices across the Internet. - Page 4 An example scenario for RIP over L2TP Routing Considerations A routing issue to consider in this set up is the fact that RIP is relatively slow to react to route changes as it only updates, by default, every 30 seconds. To improve the responsiveness of RIP you can alter the default timers for updating, flushing and so on.
- Page 5 Configurations Configurations Central Office Router set system name=Central_Office enable l2tp enable l2tp server=both add l2tp call="tunnel" rem="tunnel" ip=10.10.10.2 ty=virtual prec=in create vlan="vlan2" vid=2 add vlan="2" port=3,4 create ppp=0 over=tnl-tunnel set ppp=0 bap=off username="chap" password="chap" enable ip add ip int=eth0 ip=10.10.10.1 mask=255.255.255.0 add ip int=ppp0 ip=192.168.1.1 add ip int=vlan1 ip=222.222.1.1 add ip int=vlan2 ip=222.222.2.1...
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