CX312 switching standards


The CX312 complies with the following standards:
? International standards: DCBX, FC-BB-5, FC-DA, FC-FS-2, FC-GS-5, FC-LS, FC-MI-2, FC-PI-4, FC-SW-4, FC-VI, FCP-3, IEEE 802.3x, IEEE 802.3z, IEEE 802.3aq, IEEE 802.1Qbb, IEEE 802.1Qaz, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.1ab, IEEE 802.1ad, IEEE 802.3ad, IEEE 802.1Qbg, IEEE 1149.1-2001, RFC2837, and SFF-8431.
? Industry standards: ECMA TR/70, EN60950, GR-929, IEC 812, IEC 863, IEC60297, IEC60950, IEC60825-1/2/6, IEC60215, IEC61000, Telcordia SR-332, and UL60950.

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CX312 ports
The CX312 provides the following external ports: ? One BMC serial port, which is used for logging in to the BMC CLI. ? One SYS serial port, which is used for local management, maintenance, and GE switching plane commissioning. ? Twenty-four 10GE optical ports or six 40GE optical ports, which are used for exchanging data with external networks. The CX312 provides the following internal ports: ? Thirty-two 10GE ports, which are connected to half-width compute node slots 1 to 16. ? One 40GE port, which is used to interconnect the 10GE switching planes on switch modules in slots 1E and 4E or in slots 2X and 3X. ? Two GE ports, which are connected to the two MM910s respectively for communicating with the internal ports eth0 and eth2 on the MM910s.

Standard spanning tree protocols used on S series switch
S series switches (except S1700 switches) support the following standard spanning tree protocols: 1. STP: Spanning Tree Protocol 2. RSTP: Rapid Spanning Tree Protocol, compatible with STP 3. MSTP: Multiple Spanning Tree Protocol, compatible with STP and RSTP By default, S series switches use MSTP. When running a command to set STP mode, you can select STP, RSTP, or MSTP. VLAN-Based Spanning Tree (VBST) is a Huawei proprietary spanning tree protocol, which sets up a spanning tree for each VLAN, so traffic in different VLANs can be forwarded through different spanning trees.

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