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can not connect to tacacs+ server over a couple of router

please apologize my topologie picture

-----------

| |

| TACACS+ |

| ACS 2.6 |

| |

-----------

|

|

|-----| N1

|

|

-----

| R |

| 1 |

-----

|

| T1

|

-----

| R |

| 2 |

-----

| T2

|

--------

| SW |

| 1 |

--------

| | |

| | |

N2 N3 N4

Hi,

I have the following problem,

in our campus LAN we have a L3 Switch (SW1) on a Location which is connected over some router (r1 + r2).

We have a couple of VLan´s configured on the Switch ( N2 ... N4).

Now we would integrate the switch in our TACACS+ ACS Server for user authentication.

The problem is, if we connect to the Switch by telnet the Switch can not

reach the TACACS Server, because he tried to connect with the IP address of the interface that is connected

to the router r2 but this network (T2) is only a transfer network

and not knowen by the Tacacs server.

Is it possible to say the switch connect to TACACS Server by using ip address of network n2 ?

TIA Peter

1 REPLY
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Re: can not connect to tacacs+ server over a couple of router

All the tacacs server needs is a gateway router address. It does not need to know about other networks. Only what address in its network to send packets to that are destined for other networks. The routers are responsible for finding the other networks via their routing protocols.

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