Extension of LAN Design

A customer has a layer2 switch as device edge, connected directly to the Metro Ethernet (LAN extesnion) provider. The metro network is connected to an ATM cloud which, in turn, connected to another area of metro.

as follows: -.

customer CPE switch a<-->SP Ethernet Swtich<--> SP ATM<-->ATM Cloud<--->SP ATM<--><-->SP switch switch Switch Ethernet customer CPE B

My question is how the client configures the VLAN on the switches on the outskirts... If he can set up any ID vlan or it must to comply/align with the VIRTUAL LAN mapped to the ATM virtual circuit by the provider. Please tell us what really confused me. Thank you

[CU CPE SW - A-> Vlan 202 - (range ip/24/22 anything] <-Trunk ccess-="">SP SW<- vlan-vc="" map/bridge-=""> SP ATM SW<-->ATM Cloud<--->SP ATM SW<-Vlan-VC map/bridge-=""> SP SW <-Trunk ccess-="">[(le même que dans SW-A CPE range ip) CU CPE SW B]

Guests can be on CPE SW - A and the gateway may be over the CPE SW - B.

For example: hosts in vlan 202 in SW - A have ip of say range 10.0.0.2 - 254 - DF - GW--> 10.0.0.1

DF - GW can be in the CPE SW - B in the same Vlan but use the IP address in the same range of i: e 10.0.0.1 and everyone can communicate.

To keep simple just treat your connection between the SW - A and CPE CPE SW - normal B cable between switches and you even vlan assigned to this cable the two needles.

HTH-Cheers,

Swaroop

Tags: Cisco Support

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