VC Configuration for EX4200 switches

VC so Name think meaning is: virtual-chassis virtual chassis meaning. We need to understand why this is used? What is the benefit of using this method? We know that there are two VCP ports on the back of a switch, with 32Gbps backplane bandwidth per port, and if we connect the two ports to the VCP port of the other switch, is the bandwidth increased to 64Gbps. This is a clear benefit, the ability to process data and the forwarding state is more effective, and the advantage is that two units can be treated as one, and the cold preparation of each other. The core information and forwarding state on the main routing engine will replicate a copy to the standby machine, without any network interruption, almost instantaneously. Let me explain in detail how VC works and configuration instructions:

EX4200The switch supports flexibleVirtual Chassis (Virtual Machine Box). You can put more than one independentEX4200The switches are interconnected to form a single unit.(unit)and as a separate frame to manage, called Virtual machine box. Junipersupport up toTenDeskEX4200make up aVCprovide480each port. Each setEX4200through the back panel there are two toldVCPVirtual Switch Port(Virtual Chassiss Port), each port can provide32Gbpsfull-duplex bandwidth, when the switch is composed of a ring, each switch can provide64Gbpsfull-duplex bandwidth because two ports are working independently at the same time

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When more than oneEX4200compositionVCafter that, inVCyou will choose to produce theMasterand theBackupswitches,MasterThe switch is equivalent toMaster RE (Routing Engineengine),Backupis equivalent toBackup RE. REprovides the following features:

u run various protocols.

u Provides the FPE (Packet Forwardingengine) packet forwarding engine that forwards to all switches in the VC .

u run other management and control processes to configure the VCs .

You can configure GRES in the VC (Graceful Routing Engine switchoverSmooth routing engine switchover ), allowing the VC to switch from the main routing engine to the standby routing engine with minimal impact on network outages, when you have configured GRES , The standby routing engine automatically synchronizes the core information of the main routing engine and the forwarding state, and all updates to the main routing engine are copied to the standby routing engine, and the standby routing engine takes over when the primary routing engine fails. other switches in the VC do not reinitialize their forwarding information state when reconnecting to the new routing engine, so even if the routing engine switches, the impact on the network is minimal.

Say so much, then how do we build VC?

one. Restore the switch to the factory.

Two. Connect the VC Line

Three. Start the main switch and configure the priority of the primary switch.

Four. Configure the out-of-band management address for vme.0.

Five. Configure Gres (flat- slip Routing engine switchover )

Six. Start the standby switch and configure the priority of the standby switch.

We first connect the VC line as required, then start the first switch as the primary switch. The configuration is as follows:

A. Primary switch:

Set Virtual-chassis member 0 mastership-priority 200

Set interface VME0 Unit 0 family inet address 1.1.1.1/24

Two. Configure redundant switchover parameters:

Set Chassis redundancy Graceful-switchover

Three. Standby switch:

Set Virtual-chassis member 1 mastership-priority 100

Finally, we check the status of the VC: Show virtual-chassis Status

We have the heart to understand the real meaning of VC and its powerful role, I hope you have some help.

This article is from the "Gossip, meditation" blog, please be sure to keep this source http://yanhuasanyue.blog.51cto.com/9005517/1584560

VC Configuration for EX4200 switches