Ethernet IP Settings: Difference between revisions

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<indicator name="Front">[[File:Menu-ethernet.svg|link=:Category:Ethernet|30px|Back up to the Ethernet Services Page]]</indicator>

This information is in relation to our Etherway/Etherflow services.

==IP settings==

PPP or PPPoE is not used on Ethernet services. Instead a direct IP interlink subnet between A&A routers and the customer's router.

The Ethernet link provides a connection between your network and ours, and we connect your network to the internet. To achieve this we provide IP addresses on the link. A block of IP addresses is used specifically to link between us, and then additional addresses are provided as needed for your network.

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{| class="wikitable"

!Example IP || Use description

|-

| 192.0.2.0 || Unusable

|-

| 192.0.2.1 || ~~Virtual~~ ~~gateway~~ ~~address~~

| 192.0.2.1 || Default Gateway for the customer to use

|-

| 192.0.2.2 || A router address

| 192.0.2.2 || A&A router "A" internal address

|-

| 192.0.2.3 || B router address

| 192.0.2.3 || A&A router "B" internal address

|-

| 192.0.2.4 || For ~~your~~ use

| 192.0.2.4 || For customer use

|-

| 192.0.2.5 || For ~~your~~ use

| 192.0.2.5 || For customer use

|-

| 192.0.2.6 || For ~~your~~ use

| 192.0.2.6 || For customer use

|-

| 192.0.2.7 || Broadcast

|}

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When configuring your router/firewall you must pick one of the three addresses that are for you use, and set the subnet mask to 255.255.255.248. The gateway is set to the first usable address - the virtual gateway.

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[[File:Eth-link.png|~~none|frame~~]]

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When configuring your router/firewall you must pick one of the three addresses that are for you use, and set the subnet mask to 255.255.255.248. The gateway is set to the first usable address - the virtual gateway. ~~DNS is set to 217.169.20.20 and 217.169.20.21.~~

You should not use the "A" or "B" router address directly for anything except BGP (see below). The virtual gateway will be the same as either "A" or "B" routers, and we may switch this at any time and disable one or other of the two real routers for maintenance or in the event of failure at any time without notice. What we aim to do is always ensure you have a working virtual gateway and hence an internet connection.

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|2001:8b0:1628:4000::1 || Default Gateway for the customer to use

|-

|2001:8b0:1628:4000::2 || A&A router ~~1 (internal use)~~

|2001:8b0:1628:4000::2 || A&A router A

|-

|2001:8b0:1628:4000::3 || A&A router ~~2 (internal use)~~

|2001:8b0:1628:4000::3 || A&A router B

|-

|2001:8b0:1628:4000::4 || Customer router (for example)

|}

You can set DNS manually to 2001:8b0::2020 and 2001:8b0::2021.

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==Additional IP blocks==

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If you have additional IP requirements, these will be set up on your control pages and you can change the target address if you need. We will set these up to route to your gateway address initially, assuming (for IPv4) that you are using the last usable address as your firewall/router.

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[[File:Eth-link.png|800px]]

==DNS resolvers==

You can use our usual DNS resolvers:

*217.169.20.20

*217.169.20.21

*2001:8b0::2020

*2001:8b0::2021

==Dual routers and VRRP==

If you wish to run two routers yourself and use a protocol such as VRRP, set the virtual address as the last usable address. You can use the other two addresses as the real addresses of your two routers. We use VRID 42 for VRRP so use a different VRID if you are using VRRP to avoid any clash.

==DSL or L2TP Fallback==

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==Additional IP blocks==

Customers with an Ethernet circuit can also have one or more DSL circuits or a L2TP service, and the IP block(s) can be configured to fall back to DSL/L2TP in the case of the Ethernet going down.

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If you have additional IP requirements, these will be set up on your control pages and you can change the target address if you need. We will set these up to route to your gateway address initially, assuming (for IPv4) that you are using the last usable address as your firewall/router.

This can be setup by staff, do get in touch.

==BGP==

If you are announcing addresses to us using BGP then the routing and fall-back is managed by BGP. You should set up your BGP routers to peer with the two real router addresses ("A" and "B"). If you have two BGP routers then set up a full mesh (4 peer links). In the event of any maintenance we will cleanly close BGP sessions first causing routing to switch as necessary. You will need a suitable IP assignment and AS number for BGP. We support 32 bit AS numbers.

If you are announcing addresses to us using BGP then the routing and fall-back is managed by BGP. You should set up your BGP routers to peer with the two real router addresses ("A" and "B"). If you have two BGP routers then set up a full mesh (4 peer links). In the event of any maintenance we will cleanly close BGP sessions first causing routing to switch as necessary. You will need a suitable IP assignment and AS number for BGP. We support 32 bit AS numbers. See: [https://www.aa.net.uk/broadband/byoip/ Bring your own IP]

==Firewall==

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We will normally set up a ping to one of your addresses and provide a graph showing loss and latency on the link from each of our routers. This can be useful in debugging any issues with the fibre or your router.

Please set your firewall/router to allow pings from the three IP address on 'our' side of the interlink /29 block.

==Multiple links==

If you have multiple independent etherflows then these appear on separate VLANs at your end. The above applies to each etherflow to us for internet access. Etherflows to other sites you may have are entirely for you to configure as you wish at an Ethernet level.

[[Category:Ethernet]]