DLSw Implementation Notes
2-5
Just as each physical Token Ring in a source routing network has an associated
Ring ID, the IP virtual ring also has a Virtual Ring ID. You enter the IP virtual ring
ID with the IP Virtual Ring parameter.
The virtual ring also has an associated Maximum Transmission Unit (MTU) size.
The Virtual Ring MTU parameter specifies a maximum size for frames sent from
local systems to systems on remote source routing networks. Use as a value for
the MTU the smallest frame size supported on any remote source routing segment
in your network.
You can access and edit the IP Virtual Ring and Virtual Ring MTU parameters
through the DLSw Global Parameters window.
Count the IP virtual ring as one ring in each source routing segment attached to
your TCP/IP network. You count the IP virtual ring first rather than last, to avoid
configuring source routing segments that already contain more than eight ring
elements (Figure 2-4).
Note: Site Manager requires you to enter values for the IP Virtual Ring and
Virtual Ring MTU parameters, even if your network only includes
Ethernet/802.3 circuits configured for access to DLSw services.
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