Cisco Ex SERIES Bedienungsanleitung PDF herunterladen (Seite 55)

Juniper Networks/Cisco Systems Switch Interoperability Cookbook

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the spanning tree mode as that vendor’s proprietary “PVST Plus” mode, it is

interoperable with other vendors’ rapid spanning tree implementations.

Figure 13 illustrates the RSTP validation test bed. This example involves a standalone

Juniper EX4300 switch; a Juniper Virtual Chassis Fabric (comprised of two Juniper

QFX5100 and one Juniper EX4300 switches); and a Cisco Nexus 7010.

All inter-switch links use VLAN trunk ports that allow tagged traffic with a VLAN ID of

2001. Rapid spanning is enabled by default on the Juniper switches. VLAN trunking is

not required by spanning tree; it would work equally well with interfaces in access mode.

Cisco’s “PVST Plus,” enabled by default on the Nexus 7010, is interoperable with

standard rapid spanning tree. Traffic offered from the Spirent TestCenter traffic

generator/analyzer verifies the spanning tree topology.

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Cisco Ex SERIES Bedienungsanleitung Seite 55