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New Member

Null routes removal from OSPF

Can you tell which Cisco IOS version allows to use the command "NO DISCARD ROUTER INTERNAL OR NO DISCARD ROUTE EXTERNAL" to remove the null routes from OSPF routing protocol.

  • Other Network Infrastructure Subjects

Re: Null routes removal from OSPF

All IOS versions, above 12.1(6) inserts a route pointing to null 0 when aggregation is done. To remove the route,

no discard-route internal|external should be entered under the router ospf mode.

Note the syntax, and check to see if you keyed the command in the right mode/ right syntax.

New Member

Re: Null routes removal from OSPF

Thanks Buddy,

Two more thing, if I were to choose between Early Deployment and General Employment which one would be better.

Will IP PLUS 12.1 (7) version will give me all the access to IP routing Protocol such as BGP/EIGRP/OSPF etc along with Briding stuff such as IRB, DLSW etc.

Thanks in advance.

Re: Null routes removal from OSPF

What is GD ??

Ans - > Date at which this software release reached the "General Deployment" milestone in its lifecycle. A Major Release of Cisco IOS software reaches the "General Deployment" milestone when Cisco feels it is suitable for deployment anywhere in customer networks where the features and functionality of the release are required. Criteria for reaching the "General Deployment" milestone are based on, but not limited to, customer feedback surveys from production and test networks using the releases, CE bug reports, and reported field experience. Only Major Releases are candidates to reach the General Deployment milestone.

What is ED ??

Early Deployment (ED) Releases offer new feature, platform or interface support

So choice is really yours. 90% you should prefer the GD release, but if the GD doesnt support a new feature or module or interface, then you should go for ED release.

For your second question, (you havent mentioned the model of router)

Say if your router model is a 2600, an IP Plus image would support all those features you listed.

image name - c2600-is-mz.12.1-7

DRAM reqd - 40 MB min

Flash reqd - 8 MB

Use Cisco Software Advisor for the above purpose...

Hope that helps!

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