NOC Review 22c3. Stefan Wahl Sebastian Werner. NOC Review 22c3. The 22c3 NOC Crew. Stefan Wahl, Sebastian Werner: Berlin
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1 Stefan Wahl Sebastian Werner & The 22c3 NOC Crew
2 Outline 21c3 Recall Technical Requirements Uplink Topology Network Topology Traffic Statistics Anomalies ;) Outlook
3 21c3 Recall Unforeseen hardware problems (Ever heard of The other state?) Enough LAN hardware In-House LAN working, but too late Uplink worked (~600mbit avg) a WLAN worked sub-optimal b/g was not working Lack of information to guests Worked, but not good!
4 M5 LT Internet Proces sor MGMT CONSOLE AUX/MODEM R LIN E RX ACT I V I TY ETHERNET 1000 BASE-LX RX TX STATUS LINE RX ACTI V ITY ETH ERNET 1000 BASE-LX RX TX STA TU S ETHERNET 100BASE-TX PORT 3 RX LINK PORT 2 RX LINK PORT 1 RX LINK PORT 0 RX LINK PIC 0/3 PIC 0/2 PIC 0/1 PIC0/ 0 STA TUS Stefan Wahl, Sebastian Werner: Berlin c3 LAN Review Juniper NETWORKS TM 2 Cisco Catalyst 65xx Inter-VLAN routers About 2500 accesslayer ports (HP / Cisco) Multi-Gbit Backbone (~4Gbit) 77 VLANs / Subnets Over 3400 DHCP leases d57.core C57.core C57 B90.core B90.01 PoE Switch c91.core D57 C91 a85.core a87.core A85 A87
5 Requirements & Gimmicks High-Bandwidth LAN in entire building Independent Uplink with enough IPs Any RJ45 Plug needs connectivity Usable WLAN, especially in lecture rooms Simple, but redundant setup Native IPv6 Connectivity
6 Technical Implementation 10 Gbit In-House Backbone Many small Layer 2 domains (VLANs) Distributed Inter-VLAN routing Switching and Routing devices Multiple Internet Uplink Providers Centralised WLAN-Switching Various Vendors
7 In-House LAN
8 LAN Hardware Access-layer switches: HP 3400cl 8x HP 5308xl Aggegration Switches 10 Gbit Backbone with Foundry BigIron and HP 9408sl Hardware Interconnection via 10Gbit Fiber Optics Routing is done by the HP9408 layer! Worked excellent!
9 Stefan Wahl, Sebastian Werner: Berlin Hard-Facts :) Distribution: HP 5308xl Backbone: HP 9408sl
10 Network Setup 22c3 HP 5308 HP 5308 HP 5308 C57 HP 5308 HP 5308 B90.01 HP 9408sl HP 5308 C91 D57 Foundry Uplink 10GbE Uplink 1GbE 10 Gbit Ethernet 4x GbE Channel 2x GbE Channel 1 Gbit Ethernet Routing Switch L2/L3 Core Switch (L2) Distribution Switch Uplink Uplink Juniper Juniper Force10 A85 HP 5308 HP 5308 HP 9408sl A87
11 Implementation OSPF / ibgp All routers speak OSPF for connected networks ibgp for external routes OSPF Area 0 Force10 ibgp Aggegate HP 9408 HP 9408 External routes M7i M7i Networks
12 Internet Uplink
13 The Uplink Uncomplicated step-by-step recipe! 1. Socialising with Carriers (e.g. RIPE, De-CIX Meetings) 2. Hackers are NOT evil! 3. Burocratical stuff 4. Setup before christmas
14 Uplink Implementation 2 Uplink Fibers to BCC (by Versatel) Both enlighted with 10 GbE (!) Link 1 carries Versatel IP-Transit Link 2 carries other IP-Transit All uplink routers are in BCC Transfer networks get VLAN trunked from all over Berlin
15 Uplink Topology Foundry as Layer-2 Workhorses Co-Lo Space in Lützowstr., Alboinkontor and Gradestr. terminating peers Force10 E300 Versatel Juniper M7i Foundry Versatel Peering GmbH Juniper M7i Foundry Versatel NetSign Cogent DHosting KPN Eurorings TeliaSonera Gradestr. 40 Lützowstr. Alboinkontor
16 Uplink Hardware 1x Force10 E300 1x 10GbE LR 12x 1GbE Gbics 24x 10/100/100 2x Juniper M7i 1x Gbit SFP 1x Gbit PIC 4x 10/100
17 Uplink: Traffic Engineering IP-Uplink with high bandwidth (1-10Gbit) 1x 10Gbit Versatel Nx 1Gbit CogentCo, KPN, Telia Mx 100Mbit Dhosting, NetSign Different speed and several providers in IP-Uplink needs Traffic engineering!
18 Traffic Engineering Strategy Balancing via LocalPreferences Direct Peers get LocalPref 500 PeerOfPeer get 200, but 300 at Versatel Special Paths known to be fast, get LocalPref of 400 (e.g. Berlin Peers via DHosting ) Prepend Cogent twice, Telia once Outbound Traffic nicely distributed!
19 Wireless LAN
20 Wireless LAN Complete solution from Aruba Networks (2400 switch and 38 APs) Worked at Defcon & Blackhat in a/b/g Centralised WLAN-Switching architecture Detection and Defense of rogue & fake AccessPoints, MitM attacks, Ad-Hoc networks,...
21 Special Features Automatic radio calibration and heatmaps Triangulation of Access-Points Planning tools Conclusion: Average users: 350 day, 130 night, User peak: 509 users! WORKED!
22 Statistics
23 The Wiggly Lines 2342 client ports (48* ) All had Gigabit capability! 40 subnets / VLANs (/20-/24) 10GbE Link A-D Level Detailed
24 Uplink Traffic Average 802 out / 233 in Mbit/s Peak (5min) 1325 out / 526 in Mbit/s Σ Traffic ~40TB out / ~ 10TB in Details of Traffic Distribution per
25 Anomalies Channeling and Trunking Endless story MAC aging times Forwarding engine of one Juniper died Some DoS Attacks & Defacements triggered Abuse-Phone Many, many rogue Access-Points
26 Outlook What hardware? Bigger or a step back? Same building or new one? Wire(less d) LAN? So much uplink, or less effort?
27 Hooray! They helped us! Hardware Hewlett-Packard ProCurve Networking Foundry (AmSIX) Juniper Networks (NK Networks) Force10 Networks Aruba Networks Uplink connectivity Cogent Communications Dhosting KPN Eurorings Netsign Telia Sonera Versatel
28 Thanks for your attention! Questions or Suggestions?!
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