18.07.2013 Views

Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Appendix C: Configuring Dynamic Routing with OSPF<br />

Configuring "passive" OSPF<br />

About the Advanced<br />

window<br />

Configuring<br />

"passive" OSPF<br />

Other<br />

implementation<br />

details<br />

612<br />

The Advanced window allows you to directly edit and test the gated<br />

configuration file.<br />

• Edit "gated.conf" File: Clicking this button allows you to set up and specify<br />

features that are not available through the Admin Console.<br />

• Validate "gated.conf" File: Clicking this button launches a test utility that<br />

checks the configuration file’s entries and ensures a valid configuration.<br />

The resulting test determines whether the file has valid parameter settings that<br />

do not conflict with each other, however, it does not evaluate the "logic" <strong>of</strong> the<br />

specified configuration.<br />

You can configure and run OSPF through the <strong>Sidewinder</strong> <strong>G2</strong> without affecting<br />

the <strong>Sidewinder</strong> <strong>G2</strong> routing tables. To do this, you must edit /etc/server.conf file<br />

as follows:<br />

1 Using a text editor <strong>of</strong> your choice, find the entry:<br />

server(gated-unbound ...........)<br />

2 Change the args[-N] to args[-n -N].<br />

3 Save the file.<br />

4 Stop and start the gated server from the Services Configuration > Servers<br />

menu.<br />

Important: In order for the <strong>Sidewinder</strong> <strong>G2</strong> to correctly pass data, static routes must<br />

have been previously defined.<br />

As with any routing protocol, OSPF passes routable addresses. This defeats<br />

the purpose <strong>of</strong> NAT at the <strong>Sidewinder</strong> <strong>G2</strong> running OSPF. However, NAT can<br />

still be performed at the ASBR.<br />

gated supports a method to “query” remote gated implementations about<br />

their current state and information. This is done via the ospf monitor<br />

command. For security, the ospf monitor command is not supplied on the<br />

<strong>Sidewinder</strong> <strong>G2</strong> and it does not accept queries from remote gated instances.<br />

Filtering <strong>of</strong> routes should not be performed within an area. This leads to<br />

inconsistent link state databases. In turn, the Dijkstra algorithm will probably<br />

end up calculating routing loops. The <strong>Sidewinder</strong> <strong>G2</strong> will support route filtering<br />

when it supports running as an ABR.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!