SR/TLB with Access Filtering Example
Once you have determined the ring number and the bridge number, you can add the
!
!
interface tokenring 0
!
interface tokenring 1
!
interface ethernet 0
!
interface ethernet 1
!
bridge 1 protocol dec
SR/TLB with Access Filtering Example
In the example shown in Figure 63, you want to connect only a single machine, Host E, on an
Ethernet to a single machine, Host R, on the Token Ring.
Figure 63 Example of a Bit-Swapped Address
bridged domain
Token
Ring
Host R
MAC Addr:
0110.1234.5678
| Transparent | ||
| bridging domain | ||
|
| ||
|
|
|
|
Router | Host E | ||
running SR/TLB | MAC Addr: | ||
| 0110.2222.3333 | ||
|
|
| S1110a |
You want to allow only these two machines to communicate across the router. Therefore, you might create the following configuration to restrict the access. However, this configuration will not work, as explained in the paragraph following the sample configuration file.
Note For readability, the commands that control bridging are not shown here, just the commands that control the filtering.
interface tokenring 0
!
interface ethernet 0
!
Configuring