Arista EOS vs EOS64

[salvadorb]

Hi,
I hope you're doing well. I have an Arista DCS-7060CX-32S currently running EOS 32 bit. I'm wondering if there's a benefit of running EOS 64 bit on it? I haven't been able to find a lot of information about it, besides that the 64 bit version uses a little bit more memory (I assume that's ram). Any suggestion?

Best regards

 

[klui]

Arista states EOS64 is meant for switches with 32GB of memory. Standard 7060CX-32S has 4GB.

 

[i386]

I would go for the 64bit version:
- support for ram (4GB+ for more docker containers on the switch )
- "safer" (eg 64bit mode allows the cpu to mark memory areas as "not executable" etc)

 

[salvadorb]

So, I would need to upgrade the RAM of the DCS-7060CX-32S to 32GB in order to support without issues the EOS 64 bit?

Best regards

 

[i386]

I don't think so...
arista hast 7050 switches with 8gb ram (they should use 64bit eos, 32bit is limited to 4gb ram)

 

[LodeRunner]

My 7050QX-32S shipped with 4 GB of RAM and EOS64 a 64-bit kernel. If it has a 64-bit CPU, load a 64-bit OS and don't overthink it too much.

I think starting with 4.27 they only offer 64-bit anyway?

Edit: Double checked the image on my switch and indeed it is a 64-bit kernel, but 32-bit userland binaries; see klui's post.

 

[bitbckt]

The kernel has been 64-bit for some time, as far as I remember. The distinction is EOS64 finally updated the userland to 64-bit.

I'll second @LodeRunner, if your hardware supports EOS64, just use EOS64.

 

[klui]

EOS 4.28 comes in both 32- and 64-bit architectures. Their manual for 4.28.2F specifically calls out a feature that is only available for 32-bit EOS.

I found these two links from Arista. OP can do what you like. If you have a service contract definitely talk to an SE.

Arista Community

aristanetworks.force.com

Arista Community

aristanetworks.force.com

 

[salvadorb]

Thank you for your advise guys, I have loaded that version on the DCS-7060CX-32S and it works perfectly.

 

[digahill]

@klui Do you happen to still have that 4.28 manual? I'm looking for an official user guide from the 4.28 train since I can't find it on the Arista site. Thanks!

 

[NablaSquaredG]

Platform Family	EOS Image Architecture Supported	EOS Image Architecture Recommended
CCS-750 (4)​	32-bit and 64-bit​	64-bit​
CCS-720/CCS-722 (5)​	32-bit and 64-bit​	32-bit​
7010TX​	32-bit and 64-bit​	32-bit​
7050X3 (1)​	32-bit and 64-bit​	32-bit​
7050X4​	64-bit​	64-bit​
7060X​	32-bit and 64-bit​	32-bit​
7060X2​	32-bit and 64-bit​	32-bit​
7260X3​	32-bit and 64-bit​	32-bit​
7060X4​	32-bit and 64-bit​	32-bit​
7060X5​	64-bit​	64-bit​
7060X6​	64-bit​	64-bit​
7368X4​	32-bit and 64-bit​	64-bit​
7358X4​	64-bit​	64-bit​
7388X5​	64-bit​	64-bit​
7320X​	32-bit and 64-bit​	64-bit​
7300X3​	32-bit and 64-bit​	64-bit​
7020R​	32-bit and 64-bit​	32-bit​
7500R/R2/R3​	32-bit and 64-bit​	64-bit​
7700R4​	64-bit​	64-bit​
7800R3 line cards with 7816-CH chassis​	64-bit​	64-bit​
7800R3 line cards with 7812-CH chassis​	64-bit​	64-bit​
7800R3 line cards in 7804-CH/7808- CH chassis​	32-bit and 64-bit​	64-bit​
7800R3A line cards in all 7800 chassis​	64-bit​	64-bit​
7800R4 line cards with 7816-CH chassis​	64-bit​	64-bit​
7800R4 line cards with 7812-CH chassis​	64-bit​	64-bit​
7800R4 line cards in 7804-CH/7808-CH chassis​	64-bit​	64-bit​
7800R4A line cards in all 7800 chassis​	64-bit​	64-bit​
7280R/R2 (1) (2)​	32-bit and 64-bit​	32-bit​
7280R3 (3)​	32-bit and 64-bit​	32-bit​
7280R3A​	32-bit and 64-bit​	64-bit​
7289R3A​	64-bit​	64-bit​
7170​	32-bit and 64-bit​	64-bit​
7170B​	64-bit​	64-bit​
7130/7130LB​	64-bit​	64-bit​
AWE-7200R​	64-bit​	64-bit​

(1) These systems have 16 GB RAM. It is recommended that customers should use the
64-bit image on these platforms.
- DCS-7050CX3-32S-D
- DCS-7280QR-C72-M
- DCS-7280CR-48
- DCS-7280CR2-60
- DCS-7280CR2A-60
- DCS-7280CR2K-60

(2) These systems have 32 GB RAM. It is recommended to use the 64-bit image on these
platforms.
- DCS-7280CR2A-30
- DCS-7280CR2K-30
- DCS-7280CR2M-30
- DCS-7280SR2A-48YC6-M
- DCS-7280SR2K-48C6-M
- DCS-7280SRA-48C6-M
- DCS-7280SRAM-48C6
- DCS-7280SRM-40CX2

(3) These systems have 32 or 64 GB RAM. It is recommended to use the 64-bit image on
these platforms.
- DCS-7280CR3-36S
- DCS-7280CR3-96
- DCS-7280CR3K-32D4
- DCS-7280CR3K-32D4A
- DCS-7280CR3K-32P4
- DCS-7280CR3K-32P4A
- DCS-7280CR3K-36A
- DCS-7280CR3K-36S
- DCS-7280CR3K-96
- DCS-7280CR3MK-32D4
- DCS-7280CR3MK-32D4S
- DCS-7280CR3MK-32P4
- DCS-7280CR3MK-32P4S
- DCS-7280DR3K-24
- DCS-7280PR3K-24
- DCS-7280SR3K-48YC8
- DCS-7280SR3K-48YC8A

(4) CCS-750 systems have 16 GB of RAM. CCS-750 system supports 32-bit image until
4.34.1F release. It will support only 64-bit images from 4.34.2F onwards.

(5) These CCS systems have 8 GB of RAM, and only 64-bit images are supported on
these platforms.
- CCS-720DT-24S-M-S
- CCS-720DT-48S
- CCS-720DF-48Y-M-S
- CCS-720DF-48Y-DC
- CCS-720DP-24S-M-S
- CCS-720DP-48S-M-S
- CCS-720DP-24ZS
- CCS-720DP-48ZS
- CCS-720XPM-48TH-6SY
- CCS-720XP-48TXH-2C-S
- CCS-720XP-96ZC2-M-S
- 720XPM-48TH-6SY

 

[klui]

No, I never downloaded that manual.