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…

The correct answer is C. 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 VSTP Restrictions VSTP has these restrictions: The EX Series switches…

Ethernet Switching Features

Question

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?

Options

ASTP
BMSTP
CVSTP
DRSTP

How the community answered

(26 responses)

A
4% (1)
B
15% (4)
C
73% (19)
D
8% (2)

Explanation

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 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 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

Topics

#VSTP#PVST+#spanning tree compatibility#Cisco interop

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