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New Member

DLSw+ Eth. Redundancy

Can you give me an example of a 'Multicast MAC Address' other than 9999.9999.9999?

I'm not exactly sure how to determine Multicast

MAC Addresses.

Thank You.

2 REPLIES
New Member

Re: DLSw+ Eth. Redundancy

Just make it a unique mac address known by the two routers. '9999.9999.9999' can even be used as is.

New Member

Re: DLSw+ Eth. Redundancy

A layer 2 multicast MAC address in Ethernet 802.3 format means that bit 0 (the least significant bit) of the first octet is set on to indicate a multicast frame. A layer 2 multicast MAC address in Token Ring 802.5 format means that the most significant bit of the first octet is on. So long as you use a layer 2 multicast MAC address for the dlsw transparent redundancy-enable configuration command DLSw+ ER will work fine. MAC address 9999.9999.9999 is normally used since the MAC address would be same in both cannonical and non-connonical format (ie., bitswapped).

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