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Cellular interface and IP CEF

odedla2
Level 1
Level 1

Hi all,

I have a cisco 887vag with 2 interfaces:

1- WAN interface that give VPN

2- 3G cellular interface sim card

When I configure the Cellular 0 encapsulation to SLIP and the Dialer 0 encapsulation to PPP and enable ip cef,

I have pings to some address from the router but not from any hosts.

If I disable IP CEF, everything works fine.

If I configure SLIP/SLIP everything works as well (CEF enabled and disabled)

I have tried several versions:

The problem occurs on 153.3-m6 and 152.4-m6 and 152.4-m9

The problem doesn't occur on version 154-3.m3

Why does disabling cef solve the problem?

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