Document ID: 10462
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
MAC Addresses on the Catalyst 5000
MAC Address on the Catalyst 55xx and 6000
Change the MAC Address on a Router or Catalyst LANE Module
Hardcode the ATM Addresses of the Services Without Changing the MAC Address
Related Information
Introduction
The ATM addresses that are used for the LEC/LECS/BUS/LES can be derived from the media access control (MAC) addresses of the ATM card.
This document explains from where the MAC addresses are derived. It also gives a configuration example that describes how to hardcode the ATM addresses.
Note: The locations of the various services shown in this document might not be optimal. Before you implement this type of configuration in a live network, review the LANE Design Recommendations.
Prerequisites
Requirements
There are no specific requirements for this document.
Components Used
This document is not restricted to specific software and hardware versions.
Conventions
For more information on document conventions, refer to the Cisco Technical Tips Conventions.
MAC Addresses on the Catalyst 5000
On the Catalyst 5000, the MAC addresses are provided by the hardware. If you have a Catalyst 5000 and replace the supervisor, the MAC addresses change.
This output is taken from a Catalyst 5000.
C5000-SUP (enable) show module
Mod Module-Name Ports Module-Type Model Serial-Num Status
--- ------------------ ----- --------------------- --------- ----------------
1 2 100BaseTX Supervisor WS-X5009 004840147ok
2 24 10/100BaseTX Ethernet WS-X5225R 012107887 ok
3 2 MM OC-3 Dual-Phy ATM WS-X5158 005096158ok
Mod MAC-Address(es) Hw Fw Sw
--- -------------------------------------- ------ ---------- -----------------
1 00-e0-b0-12-14-00 to 00-e0-b0-12-17-ff 2.3 2.2(2) 4.5(4)
2 00-50-a2-f4-76-40 to 00-50-a2-f4-76-57 3.1 4.3(1) 4.5(4)
3 00-60-2f-45-03-61 2.0 1.3 11.3(10)WA4(13a)
C5000-SUP (enable) ses 3
Trying ATM-3...
Connected to ATM-3.
Escape character is '^]'.
C5000-ATM>en
C5000-ATM#show lane def
interface ATM0:
LANE Client: ...00E0B0121420.**
LANE Server: ...00E0B0121421.**
LANE Bus: ...00E0B0121422.**
LANE Config Server: ...00E0B0121423.00
Note: ** is the subinterface number byte in hex.
MAC Address on the Catalyst 55xx and 6000
On the Catalyst 5500, 5505, and new generations such as the 6000, MAC addresses are given by the backplace, or more precisely, by the clockingmodule on it.
This output was taken on a Catalyst 5505.
C5505-SUP> (enable) show module
Mod Module-Name Ports Module-Type Model Serial-Num Status
--- ------------------- ----- --------------------- --------- ----------------
1 2 100BaseTX Supervisor WS-X5509 007405058ok
2 12 10/100BaseTX Ethernet WS-X5213 002294461 ok
5 2 MM OC-3 Dual-Phy ATM WS-X5158 005912905ok
Mod MAC-Address(es) Hw Fw Sw
--- -------------------------------------- ------ ---------- -----------------
1 00-80-1c-dd-94-00 to 00-80-1c-dd-97-ff 2.3 3.1(2) 4.5(3)
2 00-60-5c-c2-f5-bc to 00-60-5c-c2-f5-c7 1.2 1.4 4.5(3)
5 00-60-2f-45-0d-bd 2.0 1.3 11.3(6)WA4(9d)
Mod Sub-Type Sub-Model Sub-Serial Sub-Hw
--- -------- --------- ---------- ------
1 EARL 1+ WS-F5511 0007401131 1.0
C5505-SUP> (enable) ses 5
Trying ATM-5...
Connected to ATM-5.
Escape character is '^]'.
C5505-ATM(5)>en
C5505-ATM(5)#show lane def
interface ATM0:
LANE Client: ...00801CDD9440.**
LANE Server: ...00801CDD9441.**
LANE Bus: ...00801CDD9442.**
LANE Config Server: ...00801CDD9443.00
Note: ** is the subinterface number byte in hex.
If you replace the 5158 (or 5161, and so on) by another one in the same slot (using 5500 and higher), the MAC addresses are unchanged. This is the same for the supervisor.
If you change the chassis itself, the MAC addresses is different and the ATM addresses change.
If you have a 5500 or 5505, the replacement of the board by another one does not change the output of the show lane default command. Therefore, the replacement is truly plug and play.
On the other hand, even though you can see that the output stays the same on a Catalyst 5000 or Catalyst 5505, the MAC addresses do come from different places.
Change the MAC Address on a Router or Catalyst LANE Module
The MAC address used by the router or LANE module can be changed manually. On the LANE module:
LANE-Eth#show run
Building configuration...
!
interface ATM0
mac-address 0000.0000.0001
The result is:
LANE-Eth#show lane default
interface ATM0:
LANE Client: 47.009181000000006047508401.000000000001.**
LANE Server: 47.009181000000006047508401.000000000002.**
LANE Bus: 47.009181000000006047508401.000000000003.**
LANE Config Server: 47.009181000000006047508401.000000000004.00
Note: ** is the subinterface number byte in hex.
Hardcode the ATM Addresses of the Services Without Changing the MAC Address
Use this setup:
Place the LEC/LES/BUS on the router and LECS/LEC on the LS1010. On the router:
<snip>
interface ATM2/0
no ip address
atm pvc 1 0 5 qsaal
atm pvc 2 0 16 ilmi
!
interface ATM2/0.2 multipoint
ip address 172.17.241.96 255.255.248.0
lane client-atm-address ...11223344556602
lane server-atm-address ...1122334455AA02
lane bus-atm-address ...1122334455BB02
lane server-bus ethernet elan1
lane client ethernet elan1
On the LS1010, this database is defined:
lane database elan_database
name elan1 server-atm-address
47.0091810000000060705A8F01.1122334455AA.02
The prefix was taken from LS1010 show lane default and the last part copied from the router configuration. When you go back to the router, you see this output:
Lisa#show lane
LE Server ATM2/0.2 ELAN name: elan1 Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.0091810000000060705A8F01.1122334455AA.02
LECS used: 47.0091810000000060705A8F01.0060705A8F05.00 connected, vcd 1450
control distribute: vcd 1452, 3 members, 196 packets
proxy/ (ST: Init, Conn, Waiting, Adding, Joined, Operational, Reject,
Term)
lecid ST vcd pkts Hardware Addr ATM Address
1 O 1451 6 0060.705a.8f02 47.0091810000000060705A8F01.0060705A8F02.01
2 O 1455 10 00e0.f9b1.b410 47.0091810000000060705A8F01.112233445566.02
3P O 1466 59 0090.86fb.1040 47.0091810000000060705A8F01.009086FB1040.02
LE BUS ATM2/0.2 ELAN name: elan1 Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.0091810000000060705A8F01.1122334455BB.02
data forward: vcd 1454, 3 members, 244 packets, 5 unicasts
lecid vcd pkts ATM Address
1 1453 32 47.0091810000000060705A8F01.0060705A8F02.01
2 1458 28 47.0091810000000060705A8F01.112233445566.02
3 1467 58 47.0091810000000060705A8F01.009086FB1040.02
LE Client ATM2/0.2 ELAN name: elan1 Admin: up State: operational
Client ID: 2 LEC up for 22 minutes 53 seconds
Join Attempt: 605
HW Address: 00e0.f9b1.b410 Type: ethernet Max Frame Size:
1516
ATM Address: 47.0091810000000060705A8F01.112233445566.02
VCD rxFrames txFrames Type ATM Address
0 0 0 configure 00.000000000000000000000000.000000000000.00
1456 1 10 direct 47.0091810000000060705A8F01.1122334455AA.02
1457 196 0 distribute 47.0091810000000060705A8F01.1122334455AA.02
1459 0 28 send 47.0091810000000060705A8F01.1122334455BB.02
1460 245 0 forward 47.0091810000000060705A8F01.1122334455BB.02
Related Information
| Updated: Nov 15, 2007 | Document ID: 10462 |