The Sepia internal LANs are divided up into four /20 networks (netmask 255.255.240.0) described below.

In January 2020, 4 new small subnets were created for the officinalis nodes to each have an IP on different subnets. NIC1 is on VLAN104, NIC2 on VLAN105, etc. At present, the only switch configured to use these subnets is the QFX5200 purchased specifically for the Officinalis nodes but other switches could be configured if desired.

DNS and DHCP were configured to manage these VLANs in https://github.com/ceph/ceph-sepia-secrets/pull/463.

All the switches in the Sepia lab are either Juniper EX4300 1Gb or QFX5100 10Gb (SFP+) except:

• A Mellanox SX1012 private switch connected to the rhoda and incerta nodes
• A QFX5200 in A09 for the Officinalis nodes
• An uplinked QFX5120 in B12 for the All Flash (name TBD) systems
• A NON-uplinked QFX5120 in A15 for RGW Scale testing gear

The Sepia Networking core is === OUT === of 40G ports. No more switches can be added without purchasing additional equipment.

In racks that only have 1Gb networking (e.g., Mira), the top-of-rack switch is most likely split

• Ports 0-23 assigned to VLAN 100 (front)
• Ports 24-47 assigned to VLAN 102 (ipmi)

The racks full of Smithi have a 10Gb and 1Gb switch. The 10Gb switch is assigned to vlan100 (front) and the 1Gb switch to vlan102 (ipmi).

The infra rack (houses RHEV, teuthology, gitbuilder.ceph.com), AA-06, has a 10Gb switch with no standard port assignments (IOW, it's kinda random). I believe any port that's not already in use isn't configured.

Red Hat IT manages all switches in the Sepia lab and switch port configuration changes should be submitted to servicedesk@redhat.com.

Providing the serial number of the switch helps IT determine which switch needs to be configured. Switch serial numbers can be found in PnT DevOps inventory tool, OpenDCIM. (Read the pop-up message for login credentials)

Example

Subject: Community Cage switch port config
Body:
Hi,

Please configure the top-of-rack switch (Serial number XXXXXX) in rack AA-02 as follows:
Ports 0 - 23 assigned to vlan100 / 172.21.0.0/20
Ports 24 - 47 assigned to vlan102 / 172.21.31.254/20

Thanks

The Community Cage has a block of public IPs dedicated to it. Ceph's usable IPs are 8.43.84.129 - 8.43.84.186.

IPv6 was enabled on 12/11/2018.

Our subnet is 2620:52:3:3:0:0:0:0/64
Our default gw is 2620:52:3:3:ffff:ffff:ffff:fffe/64