Why cannot information be displayed after an instance with a non-zero instance ID is configured on an S series switch

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S (except the S1700) series switches support the MSTP protocol, which is compatible with STP and RSTP. An instance with a non-zero instance ID takes effect only in MSTP mode. When STP works in STP or RSTP mode, only instance 0 takes effect. To query information about an instance with a non-zero instance ID, run the stp mode mstp command to set the STP working mode to MSTP.

Other related questions:
Database Instances Fail to Be Displayed
1.Restart OceanStor BCManager Agent after checking and configuring the Oracle or DB2 production environment. NOTE: For details about how to start OceanStor BCManager Agent, see Command for Starting OceanStor BCManager Agent. 2.After OceanStor BCManager Agent is started, Recreate database protected groups.

VPN instance configuration on S series switch
For the configuration of BGP/MPLS IP VPN: On the S12700, see Example for Configuring BGP/MPLS IP VPN in the S12700 Typical Configuration Examples. On the S1720&S2700&S3700&S5700&S6700&S7700&S9700, see Example for Configuring BGP/MPLS IP VPN in the S1720&S2700&S3700&S5700&S6700&S7700&S9700 Typical Configuration Examples. On the S9300, see Example for Configuring BGP/MPLS IP VPN in the Sx300 Series Switches Typical Configuration Examples.

RD value of a VPN instance on S series switches
Traditional BGP cannot process the VPN routes that have overlapping address spaces. Assume that both VPN1 and VPN2 use addresses on the network segment 10.110.10.0/24, and each of them advertises a route destined for this network segment. The local PE identifies the two VPN routes based on VPN instances and sends them to the remote PE. Because routes from different VPNs cannot work in load-balancing mode, the remote PE adds only one of the two routes based on BGP route selection rules. As a result, the route to the other VPN is lost. To ensure that VPN routes of VPNs with overlapping address spaces are correctly processed, PE devices use MP-BGP to advertise VPN routes and use the VPN-IPv4 address family to identify the routes. RDs distinguish the IPv4 prefixes with the same address space. IPv4 addresses with RDs are VPN-IPv4 addresses (VPNv4 addresses). After receiving IPv4 routes from a CE, a PE converts the routes to globally unique VPN-IPv4 routes and advertises the routes on the public network. The following is a configuration example: # ip vpn-instance vpna ipv4-family route-distinguisher 200:1 vpn-target 111:1 export-extcommunity vpn-target 111:1 import-extcommunity #

Whether S series switches support ICMP jitter test instances
All S series switches except S3700 switches support ICMP jitter test instances.

What is the maximum number of VLANs supported by an MSTP instance on an S series switch
For S (except the S1700) series switches, an MSTP instance supports up to 4094 VLANs.

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