Questions Migrating BIS with DMZ LAN1 to BNS with DMZ

Dear Swisscom,

I have the following questions regarding a migration from BIS to BNS. Since I would have to do this on a productive system, I need to know exactly what is going on beforehand.

Current setup:

Sbcon with Business Internet Services L fix legacy IP/30 and IP/48 FTTH/Mobile Failover

CB 2.0 with DMZ on LAN 1 Firewall off –> own SG on LAN 1 with legacy IP static /30 via DHCP (usable IP) and DHCP6 -PD. All services in the network from the SG including telephony hosted and trunk direct.

Possible migration to BNS:

The BNS instructions state that all Swisscom services such as telephony and TV must be in the corp LAN. QUESTION 1: If the instructions are incorrect, do telephony services (trunk, hosted) also work from the DMZ if it is configured accordingly?

The BNS stack is legacy IP only (IPv4). QUESTION 2: During the BNS migration, does the /48 network go into space even with a DMZ config?

Now to the approach regarding migration.

  1. Activate BNS for the customer
  2. Once the dashboard is available, give the BNS role to the router at the site
  3. Router initializes
  4. Buy via DB legacy Subnet /30 (the same IP’s are available as on the former BIS Anschluss)
  5. Activate DMZ, LAN port 1 e.g. activate on Centro Business)
  6. Fill out the shopping cart and fire off
  7. Refeed Security Gateway with the static configuration (DHCP is not available in the BNS DMZ)

QUESTION 3: Is the migration procedure correct?

Please take a look at @Anonymous

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a month later

Hey Tux One

Since you haven’t heard anything, I’ll write to you.

The BNS instructions state that all Swisscom services such as telephony and TV must be in the corp LAN. QUESTION 1: If the instructions are incorrect, do telephony services (trunk, hosted) also work from the DMZ if it is configured accordingly?

Telephony continues via DMZ without any problems, unfortunately I can’t tell you what the other services like TV are like.

Now to the approach regarding migration.

  1. Activate BNS for the customer
  2. As soon as the dashboard is available, give the router at the location the BNS role
  3. Router initializes
  4. Buy via DB legacy Subnet /30 (the same IP’s are available as on the former BIS Anschluss)
  5. Activate DMZ, LAN port 1 e.g. activate on Centro Business)
  6. Fill out the shopping cart and fire off
  7. Refeed Security Gateway with the static configuration (DHCP is not available in the BNS DMZ)

QUESTION 3: Is the migration procedure correct.

I actually agree with this approach so far.

Greetings Hitch

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Hi @Hitch hilft

Thanks for the reply. I thought the instructions were wrong. Makes no sense.

I have now forgotten that I asked the questions.

It’s pretty weak that Swisscom doesn’t give an answer. Anyone who has called knows that you can actually expect to receive a useful answer in writing and calmly.

For a service where everything is supposedly managed by Swisscom, I have to say in good Züritüüsch: “Handels themselves don’t actually have any ancestors in this case.”

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