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Jose Ventura
Beginner

SRP526W

Hi all!

My customer bought a SRP526W some time ago, but now he changed is phone line from ISDN to POTS.

Is it possible to connect the router provided by the ISP to the SRP526W in order to keep using all the features of SRP526W (Wireless, etc.)

Many thanks and Marry Christmas in advance.

José Ventura.

2 ACCEPTED SOLUTIONS

Accepted Solutions

Are you using the SRP to terminate the dsl connection or are you using the ethernet WAN?

Since your provider installed a new router, I am assuming it is  terminating your DSL connection, if that is the case then you can just  use the ethernet WAN on the SRP connecting to the ethernet LAN of the  ISP device

Here is a loose interpretation. If you want to continue using the VPN services, the ISP firewall must be on a different LAN subnet than the SRP. Additionally, it needs to support the VPN passthrough and you should also port forwarding the respective VPN ports... IPSec using 500 and 4500. The SRP does support NAT-T for the site to site VPN so this should be okay.

.

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/

View solution in original post

Hi Jose, you shouldn't need to configure to authenticate to the DSL service unless the ISP device is bridge product for you. If it is a NAT product, you need to configure the SRP WAN ethernet. Page 21 of the admin guide has information for this.

www.cisco.com/en/US/docs/routers/srp520_series/srp521w/administration/srp500_admin.pdf

Please reference "WAN setup (Ethernet)"

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/

View solution in original post

7 REPLIES 7
Tom Watts
Advocate

Hi Jose, this should be fine. So as long as the LAN subnet of the SRP is different than the LAN subnet of the ISP product. Wireless and phone connections should work okay.  Be aware of the fact, some things like simple port forwarding or VPN may become a bit more troublesome and dependent of what the ISP router supports. But for basic connectivity functionality, shouldn't be a problem.

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/

Hi Tom,

Many thanks for your reply.

All i have to do is to change Switch Setting from ENABLE do DISABLE under Administradtion menu, and keep the ADSL PPPoE Authentication setup.

Correct?

Many thanks.

José Ventura.

What features are you looking to keep using?

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/

Mainly VPN.

Are you using the SRP to terminate the dsl connection or are you using the ethernet WAN?

Since your provider installed a new router, I am assuming it is  terminating your DSL connection, if that is the case then you can just  use the ethernet WAN on the SRP connecting to the ethernet LAN of the  ISP device

Here is a loose interpretation. If you want to continue using the VPN services, the ISP firewall must be on a different LAN subnet than the SRP. Additionally, it needs to support the VPN passthrough and you should also port forwarding the respective VPN ports... IPSec using 500 and 4500. The SRP does support NAT-T for the site to site VPN so this should be okay.

.

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/

View solution in original post

Hi Tom,

Yes tha's what i want to do.

Router from the provider is terminating my DSL connection and i have the WAN port of the SRP connected to the ethernet LAN of the  ISP device, but my question is how to setup the SRP for this to work.

All i have to do is to change Switch Setting from ENABLE do DISABLE under Administradtion menu, and keep the ADSL PPPoE Authentication setup???

Many thanks for all your help.

Hi Jose, you shouldn't need to configure to authenticate to the DSL service unless the ISP device is bridge product for you. If it is a NAT product, you need to configure the SRP WAN ethernet. Page 21 of the admin guide has information for this.

www.cisco.com/en/US/docs/routers/srp520_series/srp521w/administration/srp500_admin.pdf

Please reference "WAN setup (Ethernet)"

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/

View solution in original post