Internal Network Configuration¶
RFC1918 regions and VLAN assignments¶
| CIDR | VLAN | Purpose |
|---|---|---|
| 172.16.0.1/22 | 4094 | Trinidad physical fabric (DEPRECATED) |
| 192.168.0.1/22 | 4094 | Trinidad physical fabric |
| 172.16.4.1/24 | 4093 | Ceph OSD network (DEPRECATED) |
| 172.17.0.1/16 | 0001 | VM subnet (DEPRECATED) |
| 192.168.6.1/23 | 0001 | OpenStack “floating”; services; CS egress |
| 192.168.8.1/23 | 0001 | OpenStack “floating”; services; FF egress |
| 192.168.10.1/23 | 0001 | OpenStack “floating”; users; CS egress |
| 192.168.12.1/23 | 0001 | OpenStack “floating”; users; FF egress |
| 192.168.15.1/24 | 0001 | Other VM subnets |
| 0002 | Not in use | |
| 192.168.???/?? | 0003 | OpenStack private for services, cs egress |
| 192.168.???/?? | 0004 | OpenStack private for services, dmz egress |
| 192.168.???/?? | 0005 | OpenStack private for 128.220.70.192/26 |
| 0006 | Abandoned by OpenStack | |
| 192.168.14.1/24 | 1024 | Museum network (DEPRECATED) |
| 2048 | EXTERNAL: JHU Internal (“CS”) network | |
| 2049 | EXTERNAL: JHU DMZ (“FF”) network |
Note
Not every switch has the full compliment of VLANs deployed but we choose to keep the addresses separate anyway, just in case. Note that we assume we have use of the entire space: our connections to JHU IT are presumably untagged forever.
Cluster Switch Cabling¶
You may also wish to refer to the Cluster Uplink Cabling for uplinks!
Procurve¶
Our Procurve switch, creatively enough named procurve.trinidad.acm.jhu.edu,
forms the backbone of our cluster internal network. The switch and machines
are, of course, authoritative, but here’s the state of the wiring the last
time anyone looked.
| Procurve Port | VLAN complement | Neighbor |
|---|---|---|
| 1 | Management tagged | Gomes “right two” port 1 |
| 2 | All but mgmt, all tagged | Gomes “right two” port 2 |
| 3, 4 (trunk) | All, all tagged | Magellan eth2 and eth3 |
| 8 | mgmt untagged | BigBrother |
| 9 | mgmt untagged | Enrique port 0 |
| 10 | VMs tagged | Enrique port 1 |
| 11 | mgmt untagged | Serrao port 0 |
| 12 | VMs tagged | Serrao port 1 |
| 13 | mgmt untagged | Antonio port 0 |
| 14 | VMs tagged | Antonio port 1 |
| 17 | mgmt untagged | Sunfire 0 port 0 |
| 18 | mgmt untagged | Sunfire 1 port 0 |
| 19 | mgmt untagged | Sunfire 2 port 0 |
| 20 | mgmt untagged | Sunfire 3 port 0 |
| 21 | mgmt untagged | Crimea eth2 |
| 23 | mgmt untagged | Management low-bandwidth switch |
Management¶
For low-bandwidth things, we have another switch that’s just routing the management VLAN untagged. Currently connected to this are
- Procurve port 23
- Sunfire BMCs
- Cluster APCs