JANOG14-コンバージェンスを重視したMPLSの美味しい使い方

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かつかげしげい
4 years ago
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1 MPLS JANOG14

2 BGP MPLS 2

3 : : : 3 ( ( )100%) : 633 (2003 ) : : 1,029 ( ) 3

4 So-net 250 4

5 30!? 10 Non IP IP 5

6 IGP? ECMP ECMP?? 6

7 BGP MPLS 7

8 MPLS ATM IP ATM QoS/CoS IP Multi-Link Extension (IP over Everything) VPN 8

9 MPLS-TE IGP 9

10 MPLS-TE Global Repair Restoration LSP Path Protection LSP Local Repair (FRR) draft-ietf-mpls-rsvp-lsp-fastreroute-06.txt One-to-One Backup 1:1 Protection Many-to-One (Facility) Backup N:1 Protection Link Protection Node Protection 10

11 MPLS-TE Ethernet ISIS-TE RSVP-TE w/ Fast Hello Not So TE ebgp, ibgp BGP Head End/Tail End 11

12 ISIS-TE??? /ISP JANOG NTT ISIS-TE? Optical Extension ISIS OSPF DR(DIS) Life Time 20 ( ) OSPF MaxAge 1 OSPF IP MD5 ISIS IP? 12

13 BGP over MPLS-TE BGP BGP MPLS-TE BGP BGP ibgp IGP 13

14 MPLS-TE ebgp Numbered TE Tunnel /30 Tunnel BGP C3o TE I/F BGP (<180s) fast external fallover 14

15 ebgp ebgp peer Primary LSP / /30 IS-IS-TE Backup LSP 15

16 (ebgp) C3o interface Tunnel0 ip address tunnel destination tunnel mode mpls traffic-eng tunnel mpls traffic-eng path-option 1 explicit name ebgpprimary tunnel mpls traffic-eng path-option 2 explicit name ebgpsecondary tunnel mpls traffic-eng path-option 3 dynamic tunnel mpls traffic-eng record-route tunnel mpls traffic-eng fast-reroute! interface Tunnel1 ip unnumbered Loopback0 tunnel destination tunnel mode mpls traffic-eng tunnel mpls traffic-eng path-option 1 explicit name ebgpsecondary tunnel mpls traffic-eng record-route! router bgp neighbor remote-as neighbor password 7 ABCDEFGHIJKLMN neighbor timers neighbor advertisement-interval 1! mpls static binding ipv

17 Numbered Tunnel numbered tunnel LDP EoMPLS(Martini) Tunnel!? RSVP (30 ) Tunnel? MPLS Tunnel? 17

18 MPLS-TE ibgp Unnumbered TE Tunnel BGP BGP TE auto-route announce BGP TE IGP SPF FRR IGP BGP BGP next-hop BGP 18

19 ibgp /32 Primary LSP ibgp peer IS-IS-TE Backup LSP /32 19

20 (ibgp) C3o interface Tunnel100 ip unnumbered Loopback0 tunnel destination tunnel mode mpls traffic-eng tunnel mpls traffic-eng path-option 1 explicit name ibgpprimary tunnel mpls traffic-eng path-option 2 explicit name ibgpsecondary tunnel mpls traffic-eng path-option 3 dynamic tunnel mpls traffic-eng record-route tunnel mpls traffic-eng fast-reroute interface Tunnel101 ip unnumbered Loopback0 tunnel destination tunnel mode mpls traffic-eng tunnel mpls traffic-eng path-option 1 explicit name ibgpsecondary tunnel mpls traffic-eng record-route! router bgp neighbor remote-as neighbor password 7 ABCDEFGHIJKLMN neighbor update-source Tunnel100 neighbor next-hop-self neighbor timers neighbor advertisement-interval 1! ip route Tunnel100 20

21 FRR? POS Ethernet RSVP Fast Hello Ethernet 1 Ethernet? 0 (xxx ms?) C3o down up 0 FRR FRR RSVP Fast Hello?? Ethernet LoS FRR POS? 21

22 J5r? RSVP Fast Hello L2 IGP Update RSVP Path Refresh Timeout ( 1 3) MPLS BFD? Ethernet 0 (xxx ms?) down up TE /30 TE TE next-hop invalid next-hop BGP BGP? IGP Invalid next-hop BGP RSVP TE C3o TE BGP C3o 22

23 MPLS-TE 1522? DA(6) SA(6) LEN Type(2) Label(4) Payload( 1500) FCS(4) DA(6)+SA(6)+Type(2)+Label(4)+Payload(1500)+FCS(4)=1522 FRR! DA(6) SA(6) LEN Type(2) Label(4) Label(4) Payload( 1500) FCS(4) DA(6)+SA(6)+Type(2)+FRR Label(4)+Label(4)+Payload(1500)+FCS(4)=1526! 23

24 mpls traffic-eng logging lsp path-errors mpls traffic-eng logging lsp reservation-errors mpls traffic-eng logging lsp preemption mpls traffic-eng logging lsp setups mpls traffic-eng logging lsp teardowns mpls traffic-eng logging tunnel lsp-selection mpls traffic-eng logging tunnel path change 24

25 MPLS-TE IP BGP MPLS MPLS-TE 25

26 26

橡2-TrafficEngineering(revise).PDF

橡2-TrafficEngineering(revise).PDF Traffic Engineering AsiaGlobalCrossing GlobalCrossing Japan Traffic Engineering(TE) ( RFC2702 Requirements for Traffic Engineering over MPLS) 1 MPLS/VPN MPLS/TE MPLS VPN Prefix base (TDP