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Webcast-Catalyst9k
New Member

nm-4t limit on 3640

Currently have 3 nm-4t's installed on a 3640, intention is to utilise 11 of these with 2meg leased lines, however when leased line 9 was connected this caused drops and carrier transitions on other interfaces. IOS 11.1(20)AA

3 REPLIES
New Member

Re: nm-4t limit on 3640

Upgrade the IOS to 12.0 above and enable CEF. The command to enable cef is as follows:

Use the " ip cef " command in global configuration mode.

New Member

Re: nm-4t limit on 3640

My mistake IOS is 12.1(5)T12, and i can't see how enabling CEF would help. Do i have a memory issue???

New Member

Re: nm-4t limit on 3640

CEF reduce the load on CPU and increase performance. How much mem you are using write now. You can also check it after you enable all interfaces with show mem and show cpu command to see the stress on your hardware.

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