Cabletron Systems SSIM-H2-02 manual Bridging Modes, Source Routed Switching SRS Operation Mode

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Bridging Modes

Source Routed Switching (SRS) Operation Mode

SRS is the default mode of operation. This mode is also restored after NVRAM reset of the SmartStack STS16-20RM switch. In this mode, all ports of the switch are in the same CRF (including SmartStack SSIM-H2-02 switch ports). Frames are switched between ports based only on MAC addresses. In this mode, by default the spanning tree algorithm is disabled. If more than one translational link is used to connect to the Ethernet cloud, IEEE spanning tree on the CRF should be enabled.

Source Routed Transparent Bridging (SRT) Mode

➽Note: SRT is the suggested mode of operation.

If multiple CRFs are used on a switch, all translational links to the same Ethernet cloud should be grouped into one CRF. If spanning tree is to be used, enable STP on the CRF and BRF. The CRF’s STP should be set to IEEE; the BRFs’ STP should be set to Based on Bridging mode or IEEE. (For more information, see the SmartStack STS16-20RM/STS16-20FRM Token Ring Switch Installation and User Guide.)

Note that this translational CRF is used only on the Token Ring side and is used toroute source-routed Token Ring frames toward the Ethernet cloud.

Figure 4. Ethernet CRF in SRT Bridging Mode

SSIM-H2-02 Fast Ethernet - Translational Switch SmartStack Interface Module Installation and User Guide Configuration