[cisco-voip] expressway cluster restart order - E's first, then C's?

[Ryan Huff]

It really doesn’t matter other than the order in which it will impact your environment. The “cluster” isn’t a mesh replication like CUCM, it’s more of like a master slave relationship.

In theory, you have the same license options on both cluster peers, so one peer can function in the same capacity as the other peer.

I would do the Edge first, then the control; especially if you have internal-only routing on the control server ... leave that for last.

Thanks,

Ryan

On Sep 21, 2017, at 6:15 PM, Matt Jacobson <m4ttjacobson at gmail.com<mailto:m4ttjacobson at gmail.com>> wrote:

I've never seen any documentation that is specific about shutdown order etc. There are also 3 different restart options for Expressway/VCS -- restart, reboot, or power down. There is also series of guides for cluster maintenance under deployment guides, which may be helpful for you. https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-10/Cisco-Expressway-Cluster-Creation-and-Maintenance-Deployment-Guide-X8-10.pdf

Aside from upgrades, the few times I've had to do something like this was restarting Expressways to clear software errors. I did the primary, then secondary nodes once the primary was back online. This is also the order suggested for upgrades. I personally do not see any value in doing one cluster before the other, but most of the deployments I see are the simple and supported ones.

On Thu, Sep 21, 2017 at 3:32 PM, Lelio Fulgenzi <lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>> wrote:

Just wondering what people are doing when they need to restart their expressway cluster? Since C is the one initiating the connection to E, and because the primary is reaching out to subscribers, I'm thinking:

Shutdown Order

C primary
C subscribers
E primary
E subscribers

(Re)Start Up Order

E subscribers
E primary
C subscribers
C primary

Thoughts?

---
Lelio Fulgenzi, B.A.
Senior Analyst, Network Infrastructure
Computing and Communications Services (CCS)
University of Guelph

519-824-4120 Ext 56354<tel:519-824-4120%20Ext%2056354>
lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>
www.uoguelph.ca/ccs<http://www.uoguelph.ca/ccs>
Room 037, Animal Science and Nutrition Building
Guelph, Ontario, N1G 2W1


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