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Outbound cdp packet dropped, NCP not negotiated

Cisco Router 2900 tell me this:

My setup pppoe dsl 8mbps and i read on other website kinda sound of MTU.. but i dont know what is this or exact number of MTU

Please anyone can help to get out of this

Sep 13 23:19:41.076: Vi2 PPP: Outbound cdp packet dropped, NCP not negotiated

Sep 13 23:20:41.076: Vi2 PPP: Outbound cdp packet dropped, NCP not negotiated

Sep 13 23:21:41.076: Vi2 PPP: Outbound cdp packet dropped, NCP not negotiated

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Sep 13 23:52:41.076: Vi2 PPP: Outbound cdp packet dropped, NCP not negotiated

3 Replies 3

fb_webuser
Level 6
Level 6

for pppoe, decrease the MTU size, something like 1450

---

Posted by WebUser Neeraj Jagga from Cisco Support Community App

my initial config is mtu 1492 - with the help of this forum

and now

i follow your mtu 1450

and still persist popping up the "Vi2 PPP: Outbound cdp packet dropped, NCP not negotiated"

can you give a range for mtu so i can change it easily wihout doubt..

ofc the range from your expertise and i just follow your range

philip daly
Level 1
Level 1

enter in the following

interface dialer-interface

no cdp enable

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