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Community Member

Cisco 837

My Cisco Router 837 have two virtual ethernet interfaces, ethernet 0 and ethernet 2, and more four physical fastethernets. When I configure the two interfaces, one as 192.168.2.1 and other as 192.168.4.2, my server ERP loses connectivity with IP 192.168.2.1 (ERP application have 192.168.1.120 IP address). Could you tell me what is happening? I think that Cisco 837 segments two ports at each network ( 192.168.2.1 and 192.168.4.2). What am I supposed to do to have the communication between the two networks and my erp doesn't lose the communication as well?

Thanks.

Best Regards.

6 REPLIES
Hall of Fame Super Gold

Re: Cisco 837

Hi, the 837 should not have two virtual ethernet interfaces. Please send "show diag" and "show run" to identify what you have.

Community Member

Re: Cisco 837

Hi, don't have show diag, but in annex , the command sh run

Look:

interface Ethernet0

description Interna

ip address 192.168.2.1 255.255.255.0

ip nat inside

ip virtual-reassembly

hold-queue 100 out

!

interface Ethernet2

no ip address

shutdown

hold-queue 100 out

Hall of Fame Super Gold

Re: Cisco 837

Hi,

That would be use of the "DMZ" features, see:

http://www.cisco.com/en/US/docs/ios/12_3/12_3x/12_3xr/dmz_port.html

When used, ethernet2 is physically connected to fasternet4.

Just make sure that router and servers connected have consistent network/mask, and you should be fine.

Please rate post if it helps!

Community Member

Re: Cisco 837

Hi,

Thanks. How make routing between ethernet interface 1 and 2?

Best regards,

Hall of Fame Super Gold

Re: Cisco 837

Just assign IP address, nothing else is required.

As an appreciation to those providing answers, please rate useful posts with the scrollbox below!

Community Member

Re: Cisco 837

I will make the test.

Thanks.

Best regards,

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