#SYN236, NetScaler SDX Deployment Overview. The nerdiest NetScaler presentation ever.
Discuses the Pros and Cons of using a Out-of-Path and In-Path NetScaler deployments. Great summary of that happens when a NetScaler is In-Path NetScaler with CIFS and SQL and how depending on the type of the data it could just add 1.75 seconds for CIFS and over 5 minutes for SQL for the same 1GB operation.
Got into the weeds on ZebOS and how it is just one of the routing protocols alongside the NetScaler FIB. NetScaler FIB always wins over ZebOS.
HA Heartbeats happen on port 3003 using UDP and it comes out untagged by default. Make sure you configure your NetScaler because that ARP will go out all the interfaces. Enabling VMACs will enable VRRP which will bypass the default GARP.
Fail-Safe Mode enables the load balances to stay up in the event that both peers experience a partial outage so it should be on so if one interface goes down could cause a failover.
Talked about Disaster Recovery and how to plan accordingly. GSLB did a great job with DR but DNS servers out on the internet won’t listen to the TTLs you set.. route a host injection only works internally because of the limit of a 32 bit address limit.
Using OTV is another great option to make failover transparent to the applications. When using OTV you also need to use LISP to separate the advertiser of the route RLOC from the subnet route EID.
This was the best and nerdiest deep dive technical session for NetScaler ever. Awesome job!!