Difference between revisions of "Networking"
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| − | | | + | | Running Ubuntu. |
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Revision as of 05:06, 2 June 2012
- Please keep an updated copy of this page printed out and posted in the server room, so there is access to documentation even if the network / internet is down
- Also see IT Policies
- We have many people working with the equipment, remember to attach or tie down anything that could get unplugged/fall/etc. We twice lost internet - first time the router fell and power switch got pressed, second time a wire was pulled out of main internet switch.
Contents
Network status
Skullspace internal network is fine but needs better organization and documentation, see tasks section. Occasional issues connecting to the main skullspace SSID. Internet connection has occasional issues when the SkSp or AW routers have trouble getting an IP, this is being troubleshooted.
High-level description
Internet is furnished by VOI, goes to the internet switch where multiples routers and servers connect. There is a main router for the main Skullspace network; this connects to a 24-port gigabit switch which has a few sub-switches in different rooms. There are APs around Skullspace with SSIDs beginning with "skullspace" and some near the fire escape connected to dishes outside, with different SSIDs.
Internet feeds
Primary: Internet from VOI (wifi-based Ubiquity NB5, tested 60mbit down 20mbit up to Speedtest.net Winnipeg, with large packets) comes from a drop in the middle of the space, connects to line #?? below the drop, goes to the server room where its PoE is; afterwards goes to the primary internet switch. We have permission to use a few IPs (currently being assigned by DHCP, but that may change - that's why they have the small white Microtik router) and a 'reasonable' amount of bandwidth.
Network hardware
All switches and their interconnects are gigabit (a few exceptions below), so two machines doing 100mbit of transfer won't fill any pipes on the way. All items are donated unless otherwise noted.
- Netgear WNDR3700 as the main router, donated by Project Bismark. Port forwarding rules are noted later in this page. Also used as switch. It had a problem (routed packets fine but services like DHCP/DNS/web server didn't work) so was taken out of the network to test.
- Linksys WRT54G2 v1.5 as a classroom AP. G wireless has been tested to 33mbit. WAN port may sometime have packet loss.
- Linksys WRT350N with DD-WRT v24SP2 firmware as a spare main router when the Netgear has issues. Lent by Stef.
- Linksys WRT54G v2 with tomato 1.28 firmware as a spare. Lent by Stef.
- A Cisco 4924 (:A0) as the main switch, by default everything connects here.
- A Cisco 4924 (:??) a spare switch.
- 2 D-Link DWL-810+ bridges for testing
- Netgear GS108T as the workshop switch.
- D-Link DWL-7100AP as a testing 2ghz/5ghz wireless AP in the workshop, still unproven.
- D-Link DES-3224 as a spare switch, management only on port 7 (Telnet, username "D-Link").
- A Belkin F5D8236 wireless-N router in the lounge room is setup as an AP and switch (100mbit only), connected to the main SkSp network. May have had packet loss before.
- 2 Cisco Aironet 1100 APs with .B cards, modified with pigtails to connect to outside dishes, and two others (:90 G card, :4A B card) spare.
- Belkin F5D5141-5 switch in the lounge.
- Intel 510T switch - currently unused. Old, only telnet management
- Cisco 2950 switches #1 and #2 - currently unused, will setup as internet-side switches
- Mikrotik RB750 (small white box) VOI's router
- Western Multiplex Tsunami 100 5.8ghz - two links (4x IDU, 2x high ODU, 2x low ODU) will be used to link to Seccuris and as a spare. Long-term loan from HighSpeedCrow. Panel antenna loaned from Seccuris.
Wiring
Please follow the standard below when labeling any new lines. LSB is closest to the RJ45. Unless otherwise noted, all wires below originate from the main rack. All wiring should be cat5 or better, T568B standard (orange-first).
| num | in binary R/G | Description | Connects to |
|---|---|---|---|
| 00 | RRR (000) | Workshop pole | ? |
| 01 | RRG (001) | wirelss APs (1of3) | ? |
| 02 | RGR (010) | Workbench south | GS108 switch? |
| 03 | RGG (011) | Workbench North | nothing |
| 04 | GRR (100) | Classroom west | nothing |
| 05 | GRG (101) | Drink machine | nothing |
| 06 | RRG (110) | Lounge north pole | nothing |
| 07 | GGG (111) | Lounge south pole | Belkin switch, etc |
| 08 | GRRR (1000) | Electrical room/Assentworks (1of2) | AW internet? |
| 09 | GRRG (1001) | Electrical room/Assentworks (2of2) | sksp to AW link |
| 10 | GRGR (1010) | War Room 1of2 | nothing |
| 11 | GRGG (1011) | War Room 2of2 | nothing |
The above runs were conservative - in many cases only a single drop because we were low on cat5, when it'd have been preferable to put 2 drops to be prepared for the future - but they still total up to 2000ft of cable, and quite a few hrs of wiring work.
Tasks
- discover why the routers aren't getting IPs occasionally
- discover why there's occasional issues connecting to the main SSID on Netgear router.
- finish mapping and labeling ethernet lines
- terminate lines correctly in a panel once we're sure server room is stable
- run 12? lines cleanly from networking rack to the blue racks.
- label networking equipment (IPs etc) and servers, update this page for the latter
- separate security/camera network from Skullspace network
- organize secondary internet feed, better router and switch for it
- put read-only and full-access passwords on devices
Wireless Networks
| SSID | speeds | password | description |
|---|---|---|---|
| skullspace | N2.4/5.x | (normal) | main network; Netgear AP in server room |
| skullspace[25]ghz_test | A/G | (normal) | D-link AP in workshop, being tested |
| skullspace_lounge_test | N2.4 | (normal) | Belkin AP in lounge, being tested |
| skullspace_classroom | G | (normal) | Linksys AP in classroom |
| Skullspace-dish-aimedatKingsHead | B | (normal) | east-pointed dish on fire escape ladder. |
| Skullspace-dish-aimedSouth | B | (normal) | south-pointed dish on fire escape ladder that no one uses |
King's Head Pub AP
A popular meeting space in Winnipeg, 1 block away from Skullspace, which doesn't have wifi - but we can see the rear of its brick building from Skullspace. So we used a donated Cisco Aironet 1100AP, modified it for external antenna connection, ran some LMR400 cable outside the fire escape door and up the fire escape ladder, and pointed a 19dbi dish towards the pub. SSID is SkullSpace-dish-aimedatKingsHead, ask a member for the password. It doesn't work at all in the south main-floor area, but it does have coverage in most parts of the north main-floor area. Speedtests: 1 to 4mbit down on a laptop with a good wireless card (Atheros N). Attempted to replace the Cisco 802.11B card in the AP with a 802.11G upgrade card (AIR-MP21G-A-K9), but it became almost impossible to connect - likely because Cisco was becoming involved with Broadcom at the time that G card was made, the latter is known for the low sensitivity and receiver quality of their chipsets.
Plans to increase coverage:
- upgrade 19dbi to 24dbi antenna - only issue is they're huge and a lot of windload to put on the fire escape ladder (especially if they ice up in the winter), would prefer a roofmount pad. We'd need to calculate that the smaller beamwidth of the higher-gain antennas doesn't lose coverage of the edges of the King's Head - this math would be size of Kings's Head building x distance = degrees of view?
- add antenna receive diversity - again, the second antenna would be better on an additional (spaced farther apart horizontally) roofmount pad; vertical diversity on the fire escape ladder wouldn't help as much.
- move antenna - currently the view (all the way up the fire escape ladder) to the front of King's Head is blocked by a concrete building. 5-10ft south on a roofmount would be ideal.
- add an amplifier or a higher-power radio. The Cisco puts out 100mw, have a 500mw amplifier. Since this isn't an omni but a highly directional antenna, we could maybe classify it under the rule that allows 24dbi gain and 24dbm power output (500mw is 27dbm, but we're losing 3 db in the 40ft of LMR cable and connections, which brings us nicely to 24dbm).
- ground the fire escape ladder - would be a good idea.
- check that the antenna and LMR cable/connections are running at full efficiency - this is old gear from a garage.
Signal in the North-main floor area is currently -82 to -87 when connection is possible, with all of the above it'd be good to get it to mid-70s numbers which should allow for pretty good coverage, considering we're a block away and going through thick brick/concrete.
Main router Port Forwarding entries
If ever we need to reset the main router, these will be put back in, so keep them updated.
| Name | Port range | Protocol | Dest IP | Enabled? | Notes |
|---|---|---|---|---|---|
| MUMD latest ubuntu ssh | 22 | TCP | .29 | Y | - |
| MUMD latest ubuntu rdp | 3389 | TCP | .29 | Y | - |
| vmsrv ssh | 2222 | TCP | .26 | Y | - |
| vmsrv rdp | 23389 | TCP | .26 | Y | - |
Internal IP usage
- 192.168.1.1 main Netgear router
- 192.168.1.3 Belkin F5D8236 Router in Lounge area
- 192.168.1.4 Cisco 1100AP (King's Head)
- 192.168.1.6 Intel 510T switch
- 192.168.1.7 Cisco 1100AP South
- 192.168.1.8 HP 300x? parallel print server
- 192.168.1.9 alex_cluster, linux container on vmsrv
- 192.168.1.10 kyle VPN, a linux container on vmsrv
- 192.168.1.11 available for use
- 192.168.1.12 Samsung CLP-310N printer
- 192.168.1.13 available for use
- 192.168.1.15 Cisco 2950 switch
- 192.168.1.16 Netgear GS108T workshop switch
- 192.168.1.17 Cisco 4924 Switch-1 (main)
- 192.168.1.18 Cisco 4924 Switch-2
- 192.168.1.20 D-link DWL-7100AP for testing
- 192.168.1.21 Linksys AP in classroom
- 192.168.1.22 DES-3224
- 192.168.1.23 Spare Linksys AP
- 192.168.1.24 Cisco Aironet 1100 :90
- 192.168.1.25 Cisco Aironet 1100 :4A
- 192.168.1.26 vmsrv
- 192.168.1.27 Who took this and didn't document?
- 192.168.1.28 central services for MUMD
- 192.168.1.29 MUMD latest Ubuntu
- 192.168.1.69 Ayecee's server - internal interface
- 192.168.1.70 Ayecee's server - LOM
- 192.168.1.100-199 Main router DHCP space
- 192.168.1.200-220 Network lab address space
- 192.168.1.245-249 : IPs for temporary wireless links
VOI IP usage
VOI gave us 206.220.196.48/28 (mask 255.255.255.240), you must reserve IPs here before using them. You'll need to plug into the new VOI-Static switch, currently DES-3224 on top of rack.
| IP | Use | Contact | used by? | reason for public IP and notes |
|---|---|---|---|---|
| 206.220.196.49 | VOI Mikrotik RB750? router | VOI Networks | now | required by network design |
| 206.220.196.50 | Main Skullspace router | CStanners a gmail.com or Sksp admins | feb 17 | has sksp port-forwarded services |
| 206.220.196.51 | Main AssentWorks router | CStanners a gmail.com or AW admins | feb 17 | has AW port-forwarded services |
| 206.220.196.52 | Vobster Nepharia Services | mak@kolybabi.com and dave@ysarro.com | 2012-02-17 | Runs DNS, SMTP/IMAP, OpenVPN, Asterisk, SSH & IRC, and HTTP for Nepharia and its associated domains. |
| 206.220.196.53 | Vobster SkullSpace Services | mak@kolybabi.com and dave@ysarro.com | 2012-02-17 | Runs DNS, SMTP/IMAP, SSH & IRC, and HTTP for SkullSpace. |
| 206.220.196.54 | Andrew's Mystery Machine | andrew at andreworr dot ca | 2012-02-17 | Will be providing an ipv6 tunneling service for members to use along with a VM server for member's use.
Currently not in use. |
| 206.220.196.55 | Andrew's Mystery Machine | andrew at andreworr dot ca | 2012-02-17 | might be required for ipv6 tunneling, will be releasing reservation if this is not the case.
Currently not in use |
| 206.220.196.56 | Jackal's VM server | craig at dolphinidesigns dot com | 2012-02-29 | DNS, SMTP/IMAP/POP3
Not pingable, but testable with nmap -PN |
| 206.220.196.57 | Jackal's VM server | craig at dolphinidesigns dot com | 2012-02-29 | DNS, Testing Server
Not pingable or testable with nmap -PN, but perhaps in use because 206.220.196.56 is up? |
| 206.220.196.58 | Stefan's Server | stefan.penner@gmail.com | soon | |
| 206.220.196.59 | Alex's server in the rack | alexwebr@gmail.com | Now | Runs Postgres/Apache/Git/Qemu. Not connected to the new switch yet - will be by Monday (Feb 20)
Currently not in use |
| 206.220.196.60 | Colin's project server | CStanners @ gmail | March 2012 | IPv6, VPN services and testing
Currently not in use |
| 206.220.196.61 | Ben's server | ben@benbergman.ca | 2012-12-18 | http/ssh/vpn/other |
| 206.220.196.62 | Justin's takaji.ca server | justin at takaji dot ca | 2012-06-01 | Running Ubuntu. |
Servers & Internet-connected devices
Main Skullspace router is always set to WAN MAC 00:01:01:01:01:01. IP is currently 206.220.196.50.
| Name | Model/setup | IPs and MACs | Description/contact | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Ayecee's | HP Proliant ML350 4U | external: 206.220.194.196 / 00:0b:cd:4d:e3:a4 dhcp internal: 192.168.1.69 / 00:08:02:ed:cc:a0 LOM: 192.168.1.70 / 00:0b:cd:2f:e0:17 | ayecee AT gmail DOT com | ||||||
| Andrew's Prime Hunter 1U | Dell PowerEdge 1750 1U | 206.220.194.144 / 00:11:43:59:f8:da | andrew at andreworr dot ca http://www.primegrid.com/show_host_detail.php?hostid=229945 | ||||||
| Andrew's Tower of Doom | Dell Poweredge 1600SC | 206.220.194.153 / 00:c0:9f:24:c0:2a | andrew at andreworr dot ca http://www.primegrid.com/show_host_detail.php?hostid=230744 | ||||||
| Ben's | White case w/ front game port | 206.220.194.212 / 00:4f:49:0b:f7:fb | ben@benbergman.ca | ||||||
| vmsrv | White case with GNU/Linux sticker on sides | 192.168.1.26 / 00:24:1d:da:50:30 | See vmsrv | ||||||
| Alex' Dell server | Dell Dimension 8250 | 206.220.194.166 / 00:50:5d:6c:5e:92 | alexwebr (a) gmail.com | ||||||
| Alex's server in the rack | (big, black box with Alex name on top) | ? / ? | alexwebr (a) gmail.com | ||||||
| Stef's server | Whitebox PC? | 206.220.196.58 / 1c:6f:65:c9:5f:e1 | stefan.penner asign gmail.com
Has overclocking stall in BIOS on startup | ||||||
| Vobster / Mak and Dave's server | Dell PowerEdge R200 |
|
mak@kolybabi.com or dave@ysarro.com |
Access
All members with RFID fobs have access to the server room
