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atmarp - Creates ATM Logical IP Subnet (LIS) interface, configures the ATM Address Resolution Protocol (ARP) module, and configures and displays the ATM ARP table
/usr/sbin/atmarp hostname
/usr/sbin/atmarp -a
/usr/sbin/atmarp -d hostname
/usr/sbin/atmarp -c lis=lis_number driver=driver_name
[atm_address]
/usr/sbin/atmarp -h [lis=lis_number]
/usr/sbin/atmarp -h lis=lis_number server
/usr/sbin/atmarp -h lis=lis_number client atm_address
ip_address [retry_time]
/usr/sbin/atmarp -s atm_address ip_address [permanent]
/usr/sbin/atmarp -v +|-vc vpi_number vci_number hostname
/usr/sbin/atmarp -r lis=lis_number
Displays all entries in the ATM Address Resolution Protocol (ARP) table. Deletes the entry for hostname from the ATM ARP table. Creates a Logical IP Subnet (LIS) interface on the driver specified. If you do not specify an ATM address, the IP convergence module selects an ATM address for the LIS interface.
Specifying the atmarp command with only the hostname parameter displays the ARP entry for hostname.
The atmarp command creates a logical IP subnet (LIS) interface over the ATM network. You can create multiple LIS interfaces on an ATM driver. Hosts connected to ATM communicate directly to other hosts within the same LIS. All members of a LIS have the same IP network/subnet number and address mask. Communication to hosts outside of the local LIS is provided via an IP router. For more information on ATM LIS see RFC1577.
If you do not specify an ATM address when creating a LIS interface, the IP convergence module selects an End System Identifier (ESI) and a selector byte, which it registers with the ATM switch.
If your local switch does not support dynamic address registration, you can specify an ATM address. In this case, the ATM address should be a full 20-byte ATM address (19-byte prefix and ESI) already registered with the switch and an unused selector byte. To create and register an ESI uses atmconfig command.
The atmarp command also configures the ATM ARP module to operate in either client or server mode.
In client mode, ATM ARP makes a connection to the ATM ARP server and sends all ARP resolution requests to the server. To configure ATM ARP clients, you must supply both the ATM address and IP address of the ATM ARP server. This is the full 20-byte ATM End System Address (AESA). Both these values are required for the client to contact the server.
In server mode, ATM ARP accepts connections from all ATM ARP clients on the LIS and determines both their ATM and IP addresses to build a table that is used to map IP addresses to ATM addresses. When functioning as a server, ATM ARP will accept ARP resolution requests from all clients on the LIS. See RFC 1577 for a description of the function of the ARP server. To configure an ATM ARP server, you only need to inform the ATM ARP module that it will be functioning as a server. No other data is required. As a result of server configuration, the server's full 20-byte AESA is displayed. Hosts on the LIS use this address when the are configured as ATM ARP clients.
The atmarp command also enables you to read the local ATM address, IP address, and the ATM ARP configuration type (ATM ARP server or ATM ARP client) on a specified LIS.
In addition, the atmarp command enables you to create and delete entries in the ATM ARP table, display entries in the ATM ARP table, toggle the permanent flag for entries, to display the local host's ATM configuration status, and to create and remove an association between an established VC and a remote IP entity that does not support classical IP.
In creating an association between an established VC (PVC or SVC) and a remote IP entity, the ATM ARP entry must be marked as permanent and there must be an InARP request pending on that VC. An InARP request on a VC is considered pending in the following cases: A system administrator establishes a PVC and the local host issues an InARP request on the PVC to establish the identity of the remote node. A remote system establishes an SVC for use with IP. The local host issues an InARP request on the SVC to determine the identity on the remote end of the SVC.
In either case, if the remote system does not support RFC 1577, the local host never receives a response to the InARP request, leaving the request pending.
To create LIS 0 on driver lta0, enter:
# atmarp -c lis=0 driver=lta0 To display the local host's ATM ARP configuration information on LIS 0, enter:
# atmarp -h lis=0 Host has been configured as a CLIENT on lis0. Server ATM address: arpserver (3900000000000000000000000088002b802e5000) Server IP address: atm3 (130.142.128.3) To configure the local host on LIS 0 as a client using host3 as a server and specify a retry time of 32 seconds, enter:
# atmarp -h lis=0 client host3 host3 32 This host is now a CLIENT on lis0. Connect retry value is : 32 seconds To read the local ATM address, IP address and ATM ARP configuration type on LIS 0, enter:
# atmarp -r lis=0 LIS 0 has been configured as an ARP client IP address: 130.142.128.20 ATM address: 3900000000000000000000000088002b8020d000 To display the ATM ARP entry for host central, enter:
# atmarp central
IP Address : central (130.142.128.4)
ATM Address : 3900000000000000000000000088002b2235b000
Flags : Complete
VCs : vpi vci VC Type
--- --- -------
0 34 SVC
To display the entire ATM ARP table, enter:
# atmarp -a
Number of entries : 3
IP Address : office1 (130.142.128.8)
ATM Address : 3900000000000000000000000088002b802e5001
Flags : Complete
VCs : vpi vci VC Type
--- --- -------
0 35 SVC
IP Address : central (130.142.128.4)
ATM Address : 3900000000000000000000000088002b2235b000
Flags : Complete Stale
VCs : vpi vci VC Type
--- --- -------
0 34 SVC
IP Address : office2 (130.142.128.2)
ATM Address : office2 (3900000000000000000000000088002b33aab000)
Flags : Complete
VCs : vpi vci VC Type
--- --- -------
0 33 SVC
To display the local host's ATM ARP configuration information, enter:
# atmarp -h Host has been configured as a CLIENT on lis0. Server ATM address: arpserver (3900000000000000000000000008002b2241703a) Server IP address: atm3 (130.142.128.3) To create an ATM ARP table entry and enable the permanent flag, enter:
# atmarp -s 3900000000000000000000000088002b33aab000 \ 130.142.128.2 permanent IP Address : host1 (130.142.128.2) ATM Address : host1 (3900000000000000000000000088002b33aab000) Flags : Complete Permanent VCs : None. To associate a PVC with a VPI of 0 and a VCI of 345 with the entry for host1, enter:
# atmarp -v +vc 0 345 host1
IP Address : host1 (130.142.128.2)
ATM Address : host1 (3900000000000000000000000088002b33aab000)
Flags : Complete Permanent
VCs : vpi vci VC Type
--- --- -------
0 345 PVC
Files: atmhosts(4), hosts(4). delim off