You are deploying new Juniper EX Series switches in a network that currently is using Cisco’s Per-VLAN spanning tree plus (PVST+) and you must provide compatibility with this environment.
Which spanning tree protocol do you deploy in this scenario?
You are deploying new Juniper EX Series switches in a network that currently is using Cisco’s Per-VLAN spanning tree plus (PVST+) and you must provide compatibility with this environment.
Which spanning tree protocol do you deploy in this scenario?
To ensure compatibility with Cisco's Per-VLAN spanning tree plus (PVST+), you should deploy the Virtual Switch Trunk Protocol (VSTP). VSTP is specifically designed to interoperate with PVST+, allowing it to manage multiple spanning tree instances, one per VLAN, similar to the way PVST+ operates.
Benefits of VSTP VSTP has the following benefits: Connects devices that are not part of the network Compatible with Cisco PVST+ VSTP and RSTP are the only spanning-tree protocols that can be configured concurrently on a device. VSTP Restrictions VSTP has these restrictions: The EX Series switches EX4300, EX4600 and the QFX platforms QFX5100,QFX3500,QFX3600 support 510 Vlans on VSTP. VSTP is not supported on the SRX platform - just STP/RSTP/MSTP are supported on SRX Series. On EX Series (except EX9200) and QFX Series switches running Junos OS that supports ELS—VSTP can support up to 510 VLANs. On EX9200 switches—VSTP can support up to 4000 VLANs. On an EX Series switch running Junos OS that does not support ELS—VSTP can support up to 253 VLANs.
Should be C.
c is correct