橡2-TrafficEngineering(revise).PDF

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きみつぐこしの
5 years ago
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1 Traffic Engineering AsiaGlobalCrossing GlobalCrossing Japan Traffic Engineering(TE) ( RFC2702 Requirements for Traffic Engineering over MPLS) 1

2 MPLS/VPN MPLS/TE MPLS VPN Prefix base (TDP / MP-BGP) MPLS TE Tunnel base (RSVP-extension) IGP vs MPLS TE IGP Shortest Path TE (explicit) Routing IGP TE IGP TE 2

3 TE Constrained-based path Label Link resource IGP LSP(LabelSwitchedPath) RSVP-extension LSP TE MPLS Label Traffic MPLS Data IP Data IP Label 20 Data IP Label Null Data IP LSP (Label Switching Path) Label Tunnel / MPLS-VPN LDP/TDP RSVP-extension 3

4 TE RSVP(RFC2205)-extension -downsteam-on-demand Label -LSP -Network ( -LSP tunnel -LSP tunnel re-routing -etc (draft-ietf-mpls-rsvp-lsp-tunnel-07.txt) TE CR-LDP - LSP - LSP -Tunnel Re-route -QoS CR-LDP LDP -LSP 4

5 TE / D LSP B -> G 60Mbps B OC3 M=2 OC3 M=2 OC3 M=2 G A C OC3 M=2 OC3 M=2 E F LSP A -> F 120Mbps TE IGP extension - ISIS extension TLV draft-ietf-isis-traffic-03.txt - OSPF extension Opaque LSA Option draft-katz-yeung-ospf-traffic-02.txt 5

6 TE Route Restoration Link LSP 1. Path Protection IGP Lookup,RSVP LSP < sec) 2. FastReroute (FRR) Backup LSP link LSP Reroute ( < 50ms) RSVP session attribute_object 0x01 draft-ietf-mpls-rsvp-lsp-tunnel-07.txt Traffic Engineering? IP DS-3(45Mbps) 6

7 Traffic Engineering? OC-3(155Mbps) 192(10Gbps) Internet IGP Metric TE GlobalCrossing TE GC TE MPLS LSP 7

8 GlobalCrossing TE TE Traffic Engineering IP GW BGP IGP TE 8

9 Traffic Engineering IGP OSPF TE ATM,FR ATM vs MPLS TE ATM:PVC ATM: TE TE: ATM:PVC PVC ) TE: 9

10 TE FastReRoute ms Cost Link TE 1. Traffic Engineering IOS/JUNOS 2. Interface RSVP enable Cisco Juniper default) 3. ISIS metric extension 4. Tunnel (cisco) 5. Explicit path & admin-group etc 10

11 TE (RSVP) RSVP (Cisco) Label RSVP(RSVP-extension) interface) enable interface pos1/0 #Cisco#. ip rsvp bandwidth 10000<Kbps> 10000<Kbps> TE (RSVP) RSVP (Juniper) Juniper Cisco Interface mpls RSVP so-2/0/0 {. unit 0 {. family iso; family mpls; 11

12 TE (RSVP) RSVP (Juniper) protocols { rsvp { traceoptions { interface so-2/0/0.0 { bandwidth 622m; TE (RSVP) RSVP Cisco Interface RSVP bandwidth) tunnel LSP Juniper tunnel 12

13 IGP (ISIS) configuration Cisco ISIS route isis passive-interface loopback0 net is-type level-2-only # is-type level-1-only metric-style wide transition max-lsp-lifetime lsp-refresh-interval mpls traffic-eng router-id loopback0 mpls traffic-eng level-2 # mpls traffic-eng level-1 IGP (ISIS) configuration Juniper ISIS isis { enable; traceoptions { lsp-lifetime 65535; level-2 { preference 115; interface so-2/0/0.0 { level 1 disable; level 2 { metric 666; hello interval 10; 13

14 TE (LSP) Cisco Cisco TE LSP(Label Switched Path) Tunnel Tunnel (LSP) TE (LSP) Cisco mpls traffic-eng tunnels mpls traffic-eng signalling advertise implicit-null! interface tunnel1000 bandwidth 1000 ip unnumbered loopback0 tunnel destination xxx.xx.xx.xx tunnel mode mpls traffic-eng tunnel mpls traffic-eng autoroute announce tunnel mpls traffic-eng priority 6 6 tunnel mpls traffic-eng bandwidth 1000 tunnel mpls traffic-eng path-option 1 dynamic 14

15 TE (LSP) Cisco! interface pos0/0 ip address ip router isis IGP ISIS mpls traffic-eng tunnels.. isis metric X level-2 ip rsvp bandwidth TE (LSP) Juniper hishii@host#edit protocol mpls { label-switching-path name { to next hop IP addr ; nocspf; nocspf: IGP metric LSP 15

16 TE (LSP) CSPF (Constrained SPF) Juniper IngressRouter LSP CSPF LSP CSPF TED(TrafficEngineeringDatabase:Topolo gy Link state, bandwidth link color,mux HOP count,etc) Cisco Tunnel LSP Juniper mpls LSP RSVP extension Cisco Juniper Juniper-Cisco Cisco mpls traffic-eng signalling advertise implicit-null 16

17 IGP ( LSP 17

JANOG14-コンバージェンスを重視したMPLSの美味しい使い方

JANOG14-コンバージェンスを重視したMPLSの美味しい使い方 MPLS JANOG14 BGP MPLS 2 : : 1988 2 2003 7 : 3 ( ( )100%) : 633 (2003 ) : : 1,029 (2004 7 1 ) 3 So-net 250 4 30!? 10 Non IP IP 5 IGP? ECMP ECMP?? 6 BGP MPLS 7 MPLS ATM IP ATM

橡2-TrafficEngineering(revise).PDF

橡2-TrafficEngineering(revise).PDF