Session Dan Gill
2 IP
WAN
WAN? Networker NSC-114 RST-271 NSC-211
:
MTBF: MTTR: MTBF MTTR :
MTBF? MTTR?
MTTR MTTR MTTR
MTBF MTTR Mom-and-apple-pie
MTBF MTBF (UPS, ) Mom-and-apple-pie Increase MTBF
MTBF? MTTR?
MTBF
(OIR) Cisco Cisco 7500
SLCR 7500 (Classical IP SLCR OIR OIR
SLCR? 11 VIP 3 VIP2-40 8 VIP2-50) RSP4 VIP 7513 152.72 SLCR 26.6 1 Router(config)# Service Single-Slot-Reload-Enable MTTR 12.0(13)S, 12.0(14)ST, 12.1(6)E, 12.1(5)T,12.2
??
(RP) MTTR RP RP MTTR
RP RP MTTR flaps
Single RP HSA RPR RPR+ Cisco 7500 4:50 4:30 2:06 0:30 Cisco 10000 2:45 N/A 0:26 0:14 Cisco 12000 2:32 N/A 1:20 0:08 Cisco 6500/7600 4:50 N/A 3:00 0:20 0:30??
C7500 C10K C12K C6500/ C7600 RPR 12.0(17)ST 12.0(17)ST 12.0(5)S, ST 12.1E RPR+ 12.0(19)ST1 12.0(17)ST 12.0(17)ST 12.0(22)S 12.1E (config) (config-red)#mode rpr-plus
1. 2 RP RPR+ RPR+ 2. RP 3. 4. RP 5. RP 6. ( ) RP ( ) ( ) ( )
MTTR RPR+ MTTR???
/ (SSO) 2 PPP ATM Cisco HDLC MPLS PPP (NSF) CEF dcef Cisco 7500 10000 12000 12.0.(22)S 6500/7600 T train NSF-Awareness
WAN NSF NSF C6500/7600 CatOS IOS
( )
( 2 )
( 3 )
RP RP RIB FIB / RP (dcef) RP LC FIB RP RP
NSF NSF NSF-awareness OSPF BGP ISIS
OSPF OSPF RP OSPF NSF OSPF 6 OOB NSF OSPF NSF-aware NSF (config)# router ospf 1 (config)# nsf
BGP BGP-4 64: NSF BGP OPEN BGP RIB NSF End-of-RIB (config-router)#bgp graceful-restart?
ISIS-NSF Cisco (1.0) ISIS RP IETF (2.0) ISIS-ISIS PDU NSF NSF (config)# router isis (config)# nsf <cisco ietf>
ISIS NSF Self-lsp lsp ) LSP LSP SPF ISP SPF RIB FIB RIB
SSO/NSF HA NSF SSO/NSF SSO/NSF Aware NSF HA
WAN Deployment Strategy ATM PPP chdlc Cisco 7500 SSO NSF SP NSF Aware
Single RP HSA RPR RPR+ SSO/NSF Cisco 7500 4:50 4:30 2:06 0:30 0:06 0:08 Cisco 10000 2:45 N/A 0:26 0:14 0:03 Cisco 12000 2:32 N/A 1:20 0:08 <0:01 Cisco 6500/7600 4:50 N/A 3:00 0:30 TBD?? Yes
SSO/NSF MTTR ( CSU/DSU )
2 PoP
MTBF 2 ( ) EtherChannel MTBF Security/DMZ /?
/ IP
RFC 2281 Cisco WAN WAN
HSRP Router1: interface ethernet 0/0 ip address 169.223.10.1 255.255.255.0 standby 10 ip 169.223.10.254 ISP Router2: interface ethernet 0/0 ip address 169.223.10.2 255.255.255.0 standby 10 priority 150 preempt delay 10 standby 10 ip 169.223.10.254 standby 10 track serial 0 60 1 2
RFC 2338 3 / HSRP VRRP 12.0(18)ST
WAN VRRP/HSRP PC PC/
GLBP GLBP HSRP GLBP
GLBP 10.1.1.1 VMAC 1.0 VMAC 1.1 VMAC 1.2 VMAC 1.3 4 GLBP MAC
GLBP 10.1.1.1 VMAC 1.0 VMAC 1.1 VMAC 1.2 VMAC 1.3 When End-Users ARP for Default Gateway, Master Round-robins Them to One of the VMACs
GLBP GLBP VMAC 12 MAC GLBP/HSRP (10 ) VMAC 2 HSRP HELLO
/ /
Tweak? Cisco IOS /! backout
3 Tweaking HSRP: Router(config)#int eth0 Router(config)#standby 10 timers 1 3 OSPF: Router(config)#int eth0 Router(config)#ip ospf hello-interval 1 Router(config)#ip ospf dead-interval 3 EIGRP: Router(config)#int eth0 Router(config)#ip hello-interval eigrp <AS#> 1 Router(config)#ip hold-time eigrp <AS#> 3
SP?
( ATM )
OSPF 2 EIGRP CEF/dCEF
OSPF EIGRP OSPF EIGRP router eigrp 111 network 10.1.1.0 variance 2
BGP AS ebgp 1 id 6 router bgp 109 network 131.108.0.0 network 192.31.7.0 neighbor 131.108.200.1 remote-as 167 maximum-paths 3
QoS FTP HTTP 50% ( ) 3 QoS QoS : 28
MTBF MTBF Increase MTBF
1600 1400 1200 1000 800 600 400 200 0 Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 Month 7 Month 8 Month 9 Month 10 Month 11 Month 12 Month 13 Month 14 Month 15 Month 16
Mom and Apple Pie:
low-hanging fruit : 4?!? NSC-114: Introduction to High Availability
PPP/HDLC (FREEK): map-class frame-relay vcgrp frame-relay end-to-end keepalive mode bidirectional ATM PVC OAM interface ATM6/0/0.33 point-to-point pvc TEST-PVC 1/33 oam-pvc manage encapsulation aal5snap
LAN OSPF EIGRP BGP : RST-241: OSPF RTS-242: EIGRP RST-243: BGP-4
OSPF On ABR: router ospf 100 area 1 range 128.213.64.0 255.255.224.0 On ASBR: router ospf 100 summary-address 128.213.96.0 255.255.224.0 Stub Not So Stubby Areas (NSSA)
OSPF OSPF 0.0.0.0 ABR 2500 ABR 2500 / Summary LSA 46 54 1500 100 5400 * 1500 OSPF 0.0.0.4 Area Transit 100 8100000 * 8 = ~64.8 Mbps
Stub OSPF OSPF 0.0.0.0 ABR 2500 ABR OSPF 0.0.0.4 Area Stub 100 52 100 5200 * 8 = ~41.6 Kbps router ospf 1 network 10.3.1.0 area 0 network 10.3.2.0 area 4 area 4 stub no-summary
EIGRP EIGRP ( )
Stub (12.0S ) HUB
X 10.1.8.0/24 10.1.8.0/24 IP summary-address eigrp 1 10.0.0.0 255.0.0.0 on Outbound Interfaces toward Remote Routers
BGP BGP 512 MTU BGP MTU ip tcp path-mtu-discovery 12.0.(21)ST
BGP RFC2918 bgp ip bgp x.x.x.x in out in BGP 5 out
OSPF Stub OSPF stub OSPF IS-IS set-overload-bit OSPF BGP OSPF
OSPF router ospf 123 max-metric router-lsa
OSPF BGP OSPF BGP Routes router ospf 123 OSPF max-metric router-lsa on-startup wait-for-bgp BGP BGP
? max-metric Stub LSA (0xFFFF) Stub ) Stub OSPF Dijkstra Stub
IP Dampening BGP Dampening IP BGP Penalty BGP flapping 12.0.(22)S 12.2.(10)T
Session
Session
NAT HSRP NAT NAT/PAT TCP/IP / / NAT NAT HSRP
NAT HSRP NAT TCP NAT NAT HSRP NAT NAT NAT NAT
class-map match-all voice match access-group 120 policy-map protect-voice class voice priority 72 class class-default fair-queue random-detect interface Serial1/2 bandwidth 256 ppp multilink multilink-group 1 service-policy output protect-voice interface Multilink1 bandwidth 256 ip address x.x.x.x ip directed-broadcast ip tcp header-compression iphc-format no ip mroute-cache load-interval 30 ppp multilink ppp multilink fragment-delay 10 ppp multilink interleave multilink-group 1 ip rtp header-compression iphc-format! access-list 120 permit udp any any range 16384 20000