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EX200 virtual chassis question: PFE and Device ID in the member switch

‎03-10-2019 03:39 PM

Hi everyone.

In Virtual chassis on EX200 , each PFE is assigned a device ID . Is Device ID always equal to PFE ID?

Example:

root@SW1> show chassis hardware
Hardware inventory:
Item Version Part number Serial number Description
Chassis CU0212120838 EX2200-48T-4G
Routing Engine 0 REV 18 750-026325 CU0212120838 EX2200-48T-4G
FPC 0 REV 18 750-026325 CU0212120838 EX2200-48T-4G
CPU BUILTIN BUILTIN FPC CPU
PIC 0 BUILTIN BUILTIN 48x 10/100/1000 Base-T
PIC 1 REV 18 750-026325 CU0212120838 4x GE SFP
Power Supply 0 PS 100W AC
Fan Tray Fan Tray

 

Above we have two PFE : PFE0 and PFE1.

 

root@SW1> show virtual-chassis device-topology local

 

root@SW1> show virtual-chassis device-topology local
Neighbor List
Member Device Status System ID Member Device Interface
0 0 Prsnt 6487.88b9.a940 0 1 internal-0/24
0 1 Prsnt 6487.88b9.a941 0 0 internal-1/27

 

Above  device ID 0 is assigned to PFE 0 because PFE is numbered as zero?

 

Thanks and have a good weekend!! 

 

 

 

 

 

 

 

 

 

3 REPLIES 3
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Solution
Accepted by topic author sarahr202
‎03-14-2019 01:15 PM

Re: EX200 virtual chassis question: PFE and Device ID in the member switch

‎03-10-2019 06:20 PM

No, the device id also changes with the member ID.  It is a value assigned to each PFE, within the Virtual Chassis for VCCP calculations. 

Yasmin Lara - Juniper Ambassador #QuadE - JNCIE-SP, JNCIE-ENT, JNCIE-DC, JNCIE-SEC
JNCIS-CLOUD, JNCDS-DC, JNCIA-DevOps
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Re: EX200 virtual chassis question: PFE and Device ID in the member switch

‎03-10-2019 08:09 PM

Hi sarah,

 

The EX2200-48T/P is a dual-PFE so each switch/FPC or member (in a VC) will have two PFE's each.  And each PFE is assigned a device ID as rightly mentioned in the previous post.  Note that EX2200-24T/P is a single PFE so you may only find one device ID on those.

 

Hope this helps.

 

Regards,
-r.

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Re: EX200 virtual chassis question: PFE and Device ID in the member switch

‎03-13-2019 05:12 PM

Hi Sarah,

 

A useful command for this is:

>show virtual chassis vc port 

In example:

show virtual-chassis vc-path source-interface ge-0/0/0 destination-interface ge-0/0/43

 

will give you this output (this can also be done across VC members):

vc-path from ge-0/0/0 to ge-0/0/43
Hop     Member PFE-Device Interface
0          0                1                  ge-0/0/0
1          0                2                  internal-1/25
2          0                0                  ge-0/0/43

 

As you can see here it is telling you

ge-0/0/0 is an interface from PFE-Dev 1 

ge-0/0/43 is an interface from PFE-Dev 0

and PFE-Dev 2 is actually internal (internal-1/25 is actually part of the VC-ports)

 

you can experiment a little with that command I am sure you can see the information you need that way.

 

Regards!

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