data frames are beeing dropped

[mngindy1974]

Hi everyone,i'm new to cisco packet tracer and i was trying to create a wierless sensor network, but when i tried to snd a packet from the sensor to the DNS server, the frames are being dropped because the device does not have a service to support it !!! what does that mean if any one can help?

[paul driver]

Hello

Can you post the PT file if applicable?

[mngindy1974]

Hi Paul,

i tried to attache the PT file but it did not the .ptk ext, do i need to compress it ? or how else can i attache the file?

thank you 

[Georg Pauwen · Accepted solution]

Hello,

you need to ZIP the file before you can upload it...

[mngindy1974]

Hi Paul,

attached is the PT file

[Georg Pauwen]

Hello,

-->  but when i tried to snd a packet from the sensor to the DNS server

How exactly are you sending a packet ? Your network is IPv6, the sensor gets an IP address. What are you sending ?

[mngindy1974]

The sensor is assignned an IPV6 address and i was just trying to esablesh that the information or a ping from the sensor to the DNS serer can happen

[Georg Pauwen]

Hello,

I think your problem is that Packet Tracer does not have the 'ipv6 dhcp relay' functionality, so a DHCP server will only be able to dish out addresses to the local segment. Try and use the router instead to serve as IPv6 DHCP server.

[mngindy1974]

Hi Georg

I did disable the DHCPV6 on the server and configured the router to be the DHCPV6 server and gave 2 domain names for each network,or 2 deferent names for s1 network and s2 network but:

the DHCPV6 request from client fails,

the sensor server is un reachable with static or DHCPV6 address

[Georg Pauwen]

Hello,

I have done numerous excercises in the past deploying IPv6 in Packet Tracer, but the clients were always other router and not PCs or servers or other devices...

I have tried to simply configure a PC as a IPv6 DHCP client, but even with the most simple setup there is no connectivity. If I connect a router to another router with IPv6 DHCP, it works right away. My guess is that you are running into one of the (many) limitations of Packet Tracer...

[mngindy1974]

What i'm trying to accomplish is a WSN with a TEEN routing protocol with DNS,HTTP server for the sensed information to be viewed by interested parties on a web site.

[Giuseppe Larosa]

Hello @mngindy1974 ,

packet tracer is intented to be used in Cisco network academies to provide a way for students to learn the basics of Vlans , inter Vlan routing, subnetting and so on.

Using it to make a demonstration of wireless sensors a small IoT deployment can be beyond the scope of the software.

By the way dropping STP BDPUs and DTP BPDUs has no relation to DNS.

STP BDPUs and DTP PDUs are OSI L2, DNS packet is L4 PDU using an IP packet with UDP port 53.

In order to get better help you should provide in attachment files the configuration of each network device that is in the topology.

I see you have IPv6 deployed in real world you need an adaption layer to be able to carry IPv6 packets over low bandwidth low MTU RF links.

see for example the following document

https://www.link-labs.com/lpwan

Hope to help

Giuseppe