Help with Metro-E configuration and setup

[burleyman]

I am trying to setup and configure Metro-E for the first time and want to make sure I get this correct because I have a couple more to do after this.

I have a main site I will call HQ and 2 other branch offices I will call B1, B2. The provider is providing a layer 2 Metro-E so I will be doing all the IP addressing and routing.

Here is the equipment I have at the sites: (all cisco)

HQ and all the branches

2901 ISR router with 2 Gigabit interfaces

Gi0/0 connects to the ISP

Gi0/1 connects to the LAN switch at each location

IP Addresses: (all flat network and all VLAN 1)

HQ LAN: 172.30.1.0/24

B1 LAN: 172.30.2.0/24

B2 LAN: 172.30.3.0/24

All servers are at the HQ site and access to the internet is through the HQ site.

How do I configure the Interfaces for both the LAN and Metro-E side and do I just do static routes.

What I was thinking…

Gi0/0 interfaces (Metro-E)

HQ LAN: 10.30.1.0/24

B1 LAN: 10.30.2.0/24

B2 LAN: 10.30.3.0/24

Gi0/1 interfaces (LAN)

HQ LAN: 172.30.1.1/24

B1 LAN: 172.30.2.1/24

B2 LAN: 172.30.3.1/24

Put static routes at the HQ pointing to the branches.

[Jeff Van Houten]

If it's layer 2 between the sites then all the gi0/0 interfaces need to be in the same layer 3 subnet.

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[burleyman]

Just checked and yes it is layer 2 between the sites. So i would make the IP addresses 10.1.1.0/24

HQ - 10.1.1.1

B1 - 10.1.1.2

B2 - 10.1.1.3

Do I have to configure the interfaces with anything special?

What would the config on the inside interface look like and what would the outside look like?

Would I do this for the routes from the branches to HQ...

B1

ip route 172.30.1.0 255.255.255.0 10.1.1.1

Then HQ to branches

ip route 172.30.2.0 255.255.255.0 10.1.1.2

ip route 172.30.3.0 255.255.255.0 10.1.1.3

Or is there a better way to route between all the sites.

Thanks

[Jeff Van Houten]

If there is no inter-branch communication then just set the default routes on each branch router. Ip route 0.0.0.0 0.0.0.0 10.1.1.1

For the hq router you would put in a branch route for each location as you've shown.

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[burleyman]

I will give that a try.....Thanks for your help and I will post the results