Known limitations for IBM Cloud Juniper vSRX

There are some limitations to be aware of when using IBM Cloud® Juniper vSRX.

Due to incompatible networking elements, the Juniper vSRX solution is not available as follows:
- 10 Gbps version in WDC01
- 1G and 10G High Availability versions in: DAL05, SJC01, and WDC01
Only IBM Cloud certified versions of vSRX are supported. The list of supported versions can be found here.
Upgrading from Stand-alone to High Availability mode is not supported.
Downgrading from High Availability to Stand-alone mode is not supported.
Upgrading from 1G to 10G or downgrading from 10G to 1G is not supported.
Only the latest IBM Cloud certified vSRX release is available for new orders and upgrades. Requests for older IBM Cloud certified vSRX releases should be made through an IBM Support case. Limitations for upgrading and downgrading can be found in Upgrading the vSRX.
Older Juniper vSRX gateways were deployed with Linux Bridge based networking virtualization. This virtualization can achieve only limited throughput and never line-rate throughput. Most deployments of vSRX 18.4 and later use SR-IOV, which provides improved throughput.

Older Juniper vSRX gateways were deployed with a 60-day evaluation license, which might cause the kernel to generate error messages even when another (valid) license is on the system. Remove any 60-day evaluation licenses to avoid this issue. To do so, follow these steps:

Log in to your vSRX gateway device.
Enter CLI mode by running the command cli at the console prompt.

Run the following command to get the license identifier:

show system license

The output is similar to the following:

License usage:
                               Licenses     Licenses    Licenses    Expiry
Feature name                       used    installed      needed
logical-system                        0            3           0    permanent
Virtual Appliance                     1            1           0    2021-10-18 00:00:00 UTC
remote-access-ipsec-vpn-client        0            2           0    permanent

Licenses installed:
License identifier: E2018101804
License version: 4
Software Serial Number: SUB00024128768
Customer ID: IBM_SL_10G
Features:
  Virtual Appliance - Virtual Appliance
    date-based, 2018-10-18 00:00:00 UTC - 2021-10-18 00:00:00 UTC

Copy the identifier of the license that you want to delete, then run the command:
```
request system license delete <license identifier>
```