Juniper Networks EX8208 사용자 설명서

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Understanding Alarm Types and Severity Levels on EX Series Switches

Field-Replaceable Units in an EX8208 Switch

Field-replaceable units (FRUs) are switch components that you can replace at your site.
The switch uses these types of FRUs:

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Hot-insertable and hot-removable—You can remove and replace these components
without powering off the switch or disrupting the switching function.

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Hot-pluggable—You can remove and replace these components without powering off
the switch, but the switching function is interrupted until you replace the component.

Table 9 on page 23 lists the FRUs for the EX8208 switch and their types.

Table 9: FRUs in an EX8208 Switch

Type

FRU

Hot-insertable and hot-removable.

Power supplies

Hot-insertable and hot-removable.

Fan tray

Redundant configuration:

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Master SRE module is hot-pluggable.

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Backup SRE module is hot-insertable and hot-removable.

Base configuration:

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Switch must be disabled before the SRE module is removed. See “Taking the SRE
Module Offline in an EX8208 Switch” on page 213.

See “EX8208 Switch Configurations” on page 6.

Switch Fabric and Routing Engine (SRE)
module

Redundant configuration:

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SF module is hot-insertable and hot-removable.

Base configuration:

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We recommend that you disable the switch before removing the SF module. See
“Taking the SF Module Offline in an EX8208 Switch” on page 216.

See “EX8208 Switch Configurations” on page 6.

Switch Fabric (SF) module

Hot-insertable and hot-removable.

We recommend that you take the line cards offline before removing them. See
“Removing a Line Card from an EX8200 Switch” on page 218.

8-port SFP+ line card

40-port SFP+ line card

48-port SFP line card

48-port RJ-45 line card

Hot-insertable and hot-removable.

SFP and SFP+ transceivers

Chapter 2: Component Descriptions