MT6000: How configure additional PPPoE on VLAN 835

Technical Support for Routers
1

Dear All,

I decided to replace my ISP router with a MT6000.
I need some suggestion in order to configure an additional PPPoE over VLAN on the same WAN port in order to support multicast from my ISP (TIM, aka Telecom Italia).

Some background. Under TIM network (FTTH/FTTC) the operator offers two PPPoE services on two different VLAN ID, and the same WAN link of course.
The first is PPPoE over VLAN 835 that offers generic internet access. I configured this from MT6000 interface without any issue.
The second is a PPPoE over VLAN 836 that offers multicast IPTV. I tried to create a eth1.836 device and a PPPoE interface but without success.
Any advice?

ciao

luigi
network.zip (967 Bytes)

2

Often you only have one pppoe connection.

This serves for both vlans, so for normal internet 835 is good with protocol pppoe.

For second vlan id you likely don't need to use pppoe as protocol, you just set the protocol to dhcp, make sure to uncheck the default gateway option when editing this interface under advanced settings tab.

To ensure it is working as expected, you will see a ip from the isp, if not then maybe the isp changed instructions (alot of isps don't always report these changes or document them, it is very likely they might just simplified it and iptv goes over the main vlanid, or maybe the whole igmp/multicast stack is no longer needed).

To make iptv work further:

You might need igmpproxy and then replace wan for interface iptv (the one with dhcp protocol), and you forward it to lan or a isolated lan interface.

You might need one firewall traffic rule to allow 224.0.0.254 or just 224.0.0.0/4 from iptv to lan.

Currently i cannot help you further since im not behind a pc could not check the configs, but that is how i did that in the past.

This is my old config for igmpproxy:

config igmpproxy
        option quickleave 1
#       option verbose [0-3](none, minimal[default], more, maximum)

config phyint
        option network iptv
        option zone wan
        option direction upstream
        list altnet 0.0.0.0/0
        # list altnet 217.166.0.0/16 
        # list altnet 213.75.0.0/16

config phyint
        option network lan
        option zone lan
        option direction downstream

And firewall:

config rule
        list proto 'udp'
        option src 'iptv'
        option dest 'lan'
        list dest_ip '224.0.0.0/4'
        option target 'ACCEPT'
        option name 'Allow-IGMP-Proxy'

config forwarding
        option src 'lan'
        option dest 'iptv'

^ it is really old config since i dont use it anymore, you might change some things, maybe the lan to iptv zone forward is not necessary.

In case you really need two pppoe which is very uncommon, add a @ so define the second pppoe interface as: @eth1.836 or as @wan.836, you will know if it works :wink:

3

You are right.
I double checked the TIM specs and they just use a static ip on the 836 interface. I was wrong, sorry.

Thanks again,
ciao

luigi

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