Cisco Systems OL-7396-01 Manual De Usuario
13-4
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 13
Configuring IP over ATM
Configuring Classical IP over ATM
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.
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.
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 ARP
table can be idle before the server takes any action to timeout the entry.
table can be idle before the server takes any action to timeout the entry.
Command
Purpose
Step 1
Switch(config)# interface atm 0[.subinterface#]
Switch(config-if)#
or
Switch(config)# interface atm
card/subcard/port[.subinterface#]
card/subcard/port[.subinterface#]
Switch(config-if)#
Selects the route processor interface.
or
If you are using the optional Catalyst 8540 MSR
enhanced ATM router module, specifies the ATM
interface number.
enhanced ATM router module, specifies the ATM
interface number.
Step 2
Switch(config-if)# atm nsap-address
nsap-address
nsap-address
or
Switch(config-if)# atm esi-address esi.selector
Specifies the NSAP ATM address of the
interface.
interface.
or
Specifies the end-system-identifier address of the
interface.
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 self [time-out
minutes]
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.
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 this interface as the ATM ARP server
for the logical IP network.
for the logical IP network.
Step 5
Switch(config-if)# atm route addr-prefix
2
{atm 0
| atm card/subcard/port} internal
2.
Address prefix is first 19 bytes of the NSAP address.
Configures a static route through the ATM switch
router to the route processor interface, or the
optional Catalyst 8540 MSR enhanced ATM
router module interface. See the following note.
router to the route processor interface, or the
optional Catalyst 8540 MSR enhanced ATM
router module interface. See the following note.