25-23
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 25
Configuring ATM Router Module Interfaces
Configuring Classical IP over ATM in an SVC Environment
Configuring as an ATM ARP Server
Cisco’s implementation of the ATM ARP server supports a single, nonredundant server per LIS, and one
ATM ARP server per subinterface. Thus, a single ATM switch router can support multiple ARP servers
by using multiple interfaces.
To configure the ATM ARP server, perform the following steps, beginning in global configuration mode:
Note
The ESI address form is preferred in that it automatically handles the advertising of the address. Use the
NSAP form of the command when you need to define a full 20-byte unique address with a prefix
unrelated to the network prefix on that interface. You only need to specify a static route when configuring
an ARP server using an NSAP address.
The idle timer interval is the number of minutes a destination entry listed in the ATM ARP server’s ARP
table can be idle before the server takes any action to timeout the entry.
Example
The following example configures the route processor interface ATM 0 as an ARP server (shown in
Figure 25-8
):
ARP_Server(config)#
interface atm 1/0/0
ARP_Server(config-if)#
atm esi-address 0041.0b0a.1081.00
ARP_Server(config-if)#
atm arp-server self
ARP_Server(config-if)#
ip address 123.233.45.2 255.255.255.0
Command
Purpose
Step 1
Switch(config)#
interface atm
card
/
subcard
/
port
[
.
subinterface#
]
Switch(config-if)#
Selects the Catalyst 8540 MSR enhanced ATM
router module interface.
Step 2
Switch(config-if)#
atm nsap-address
nsap-address
or
Switch(config-if)#
atm esi-address
esi
.
selector
Specifies the NSAP ATM address of the
interface.
or
Specifies the end-system-identifier address of the
interface.
Step 3
Switch(config-if)#
ip address
ip-address mask
Specifies the IP address of the interface.
Step 4
Switch(config-if)#
atm arp-server
time-out
minutes
1
1.
This form of the
atm arp-server
command indicates that this interface performs the ATM ARP server functions. When you
configure the ATM ARP client (described earlier), the
atm
arp-server
command is used—with a different keyword and
argument—to identify a different ATM ARP server to the client.
Configures the ATM ARP server optional idle
timer.
Step 5
Switch(config-if)#
atm route
addr-prefix
2
atm
card
/
subcard
/
port
internal
2.
Address prefix is the first 19 bytes of the NSAP address.
Configures a static route through the optional
ATM router module interface.