AGLT2 IP Addresses

Information on IP addresses for the Tier2

For detail list of IPs at MSU see ask Tom for msu-ips.ods or see configs/msu/network/msu-ips.csv

For detailed list of IPs at U-M see?

References:

• http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

Internet

AGLT2 has two /23 subnets (512 IPs per subnet):

• 192.41.230.0/23 UM
• 192.41.236.0/23 MSU

MSU

Description of layout of public IPs.

The 8 racks of 40 compute nodes have been blocked off. Number starts at the "top" of the address space with node 102-1 and goes to 102-42 then racks 104 etc. Note that two slots per rack are not allotted IPs.

rack	Node	IP
102	c-102-1	.237.254
	c-102-42	.237.215
104	c-104-1	.237.214
	c-104-42	.237.175
106	c-106-1	.237.174
	c-106-42	.237.135
108	c-108-1	.237.134
	c-108-42	.237.95
111	c-111-1	.237.94
	c-111-42	.237.55
113	c-113-1	.237.54
	c-113-42	.237.15
115	c-115-1	.236.254
	c-115-42	.236.215
117	c-117-1	.236.214
	c-117-42	.236.175

General servers are numbered from .236.11 up.

dCache file servers are numbered from .236.51 up.

10.10.

AGLT2 is using two /20 subnets (4096 IPs per subnet):

• 10.10.0.0/20 UM
• 10.10.128.0/20 MSU

Note IPs in these new ranges will map to .msulocal (and .umlocal?) domains. Generic .local to be deprecated.

MSU

IP/CIDR	Last IP	Usage Description
10.10.128.0/20		AGLT2 MSU Private Addresses
10.10.128.0/21	.135.255	Mainly used as four /23 to match the one public /23
10.10.128.0/23	.129.255	Hosts, private IP matching end of public IP
10.10.130.0/23	.131.255	Host IPMI, private IP matching end of public IP
10.10.132.0/23	.133.255	Hosts, unassigned (storage network?)
10.10.134.0/23	.135.255	Hosts, unassigned
10.10.136.0/21	.143.255	Devices without public IPs in aglt2.org domain
10.10.136.0/23	.137.255	Switches, VMWare etc.
10.10.138.0/23	.139.255	IPMI etc. matching with previous /23
10.10.140.0/23	.141.255	Unassigned
10.10.142.0/24	.142.255	Allocated 8 IPs per rack, racks (100) 101-110, 111-120 /29 per rack
10.10.143.0/24	.143.255	Unassigned

Old table

IP/CIDR	Last IP	Usage Description
10.10.0.0/16		AGLT2 Private Addresses
10.10.0.0/17		U-M
10.10.0.0/19	.31.255	UM addresses reachable from MSU. To Replace 10.10.0.0/23
10.10.128.0/17		MSU
10.10.128.0/19	.159.255	MSU addresses reachable from UM. To Replace 10.10.2.0/23
10.10.128.0/21	.135.255	MSU hosts, private IP matching end of public IP
10.10.136.0/21	.143.255	MSU host IPMI, private IP matching end of public IP
10.10.144.0/21	.151.255	MSU hosts, unassigned
10.10.152.0/21	.159.255	MSU Management and hosts with no public IPs
10.10.152.0/22	.155.255	Switches, VMWare Servers
10.10.156.0/22	.159.255	Power (APC), Temp, etc.
10.10.160.0/19		MSU Unassigned
10.10.192.0/19		MSU Local only, NAT?, NFS and iSCSI storage networks
10.10.224.0/19		MSU Unassigned

10.10.156. MSU Power Equipment

These are migrating to 10.10.142.0/24

IP Address	Mask Bits	Use
10.10.156.0	/24	Power Equipment
10.10.156.0	/28	Central stuff; Misc
10.10.156.16	/30	Rack 101
10.10.156.20	/30	Rack 102
10.10.156.92	/30	Rack 120

-- TomRockwell - 10 Nov 2008