Cisco Cisco Packet Data Interworking Function (PDIF)
System Settings
Configuring Virtual MAC Addresses ▀
ASR 5000 System Administration Guide, StarOS Release 16 ▄
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Configuring Virtual MAC Addresses
When you enable virtual MAC addressing, a single block of 256 addresses is added to the system configuration. The
MAC addresses assigned and stored in the EPROM on Ethernet Line Cards are disregarded; MAC addresses for all
ports on all Ethernet Line Cards are assigned from the specified block of virtual MAC addresses. This does not affect
the MAC addresses on SPIO cards.
MAC addresses assigned and stored in the EPROM on Ethernet Line Cards are disregarded; MAC addresses for all
ports on all Ethernet Line Cards are assigned from the specified block of virtual MAC addresses. This does not affect
the MAC addresses on SPIO cards.
As in normal MAC address assignments, the corresponding ports on the upper and lower line cards have the same
assigned MAC address. When you enable virtual MAC addressing, these addresses are all assigned from the specified
block of 256 addresses.
assigned MAC address. When you enable virtual MAC addressing, these addresses are all assigned from the specified
block of 256 addresses.
If you enable virtual MAC addressing and remove a line card from the system, MAC addresses do not have to be
reassigned because the MAC addresses in use do not belong to any line card. Therefore, if a line card is removed from
the system, there is no possibility that any port on a line card in the system is using any of the MAC addresses that
belong to the removed line card.
reassigned because the MAC addresses in use do not belong to any line card. Therefore, if a line card is removed from
the system, there is no possibility that any port on a line card in the system is using any of the MAC addresses that
belong to the removed line card.
Use the following example to configure virtual MAC addressing:
configure
port mac-address virtual-base-address <MAC_Address>
end
Notes:
MAC_Address
is the first address of a block of 256 MAC addresses. The system has reserved 65536 MAC
addresses (00:05:47:FF:00:00 to 00:05:47:FF:FF:FF) for use by customers. This range allows you to create 256
address blocks each containing 256 MAC addresses (for example, 00:05:47:FF:00:00, 00:05:47:FF:01:00,
00:05:47:FF:02:00, 00:05:47:FF:03:00, 00:05:47:FF:04:00, etc.).
address blocks each containing 256 MAC addresses (for example, 00:05:47:FF:00:00, 00:05:47:FF:01:00,
00:05:47:FF:02:00, 00:05:47:FF:03:00, 00:05:47:FF:04:00, etc.).
Caution:
This configuration requires a valid block of unique MAC addresses that are not used anywhere else.
The use of non-unique MAC addresses can degrade and impair the operation of your network.
Save your configuration as described in the Verifying and Saving Your Configuration chapter.