Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 6.x
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Index

Table Of Contents

A - B - C - D - E - F - G - H - I - L - M - N - O - P - R - S - U - V - W -

Index

A

ABR 6-5

address formats

IPv4 2-2

IPv6 3-2

IPv6 (table) 3-2

address resolution protocol. See ARP

administrative distance

description 1-7, 6-38

static routing 13-2

aggregatable global addresses. See IPv6

unicast addresses

areas 7-5

ARP

caching 2-3

configuring gratuitous ARP 2-13

configuring Local Proxy ARP 2-12

configuring Proxy ARP 2-11

configuring static ARP entries 2-10

description 2-3

gratuitous ARP 2-5

Local Proxy ARP 2-5

process (figure) 2-3

Proxy ARP 2-5

Reverse ARP 2-4

AS. See autonomous system

ASBR 6-5

AS confederations

configuring 11-31

description 11-4

AS numbers

ranges (table) 1-5

AS-path lists

configuring 17-9

description 17-4

autonomous system

description 1-5

B

bandwidth 1-4

BDR 6-3

BFD

BGP 11-10

EIGRP 8-8

HSRP 20-9

IS-IS 9-5

OSPF 6-12

static routes 13-4

BGP 10-8

4-byte AS number 10-2

administrative distances (table) 10-3

advertise the default route 11-45

BFD 11-10

clearing neighbors 10-19

conditional advertisement 11-9

conditional advertisement example 11-43

configuration modes 10-9

configuring AS-4 dot notation 10-16

configuring conditional advertisement 11-42

configuring conditional route injection 11-39

configuring dynamic capability 11-38

configuring maximum prefixes 11-37

configuring policy-based administrative distance 11-48

configuring prefix peering 11-23

configuring route dampening 11-36

configuring with VRFs 11-55

default settings 10-9, 11-15

description10-1to10-8, 11-1to 11-13

disable the feature 10-12

displaying statistics 10-24, 11-59

eBGP 11-3

enable the feature 10-11

example configuration 10-24

feature history (table) 10-25, 17-21

generic specific extended community lists 17-5

guidelines 10-8, 11-14

high availability 11-12

iBGP 11-3

licensing requirements 10-8, 11-13

limitations 10-8, 11-14

MIBs 8-38, 10-25

modifying next-hop address 11-25

MP-BGP 11-11

next-hop address tracking 11-9

path selection 10-4

PIC core 10-7

prerequisites 10-8, 11-13

router ID 10-4

speakers 10-1

tuning 11-50

unicast RIB 10-7

verifying configuration 10-22, 11-57

virtualization support 10-8, 11-13

BGP additional paths

advertising the capability of sending and receiving 11-27

configuring 11-27

configuring advertised paths 11-28

configuring path selection 11-29

configuring the sending and receiving 11-28

description 11-7

diagram 11-8

BGP aggregate addresses

configuring 11-38

BGP AS-path lists

configuring 17-9

description 17-4

BGP authentication

configuring 11-24

description 11-2

BGP autonomous systems

description 10-2

BGP capabilities negotiation

description 11-6

disabling 11-26

BGP community lists

configuring 17-10, 17-11

description 17-4

BGP extended community lists

description 17-4

BGP graceful restart

configuring 11-54

description 11-12

BGP instance

creating 10-12

deleting 10-13

restarting 10-14

BGP load balancing

configuring 11-37

BGP loadsharing

description 11-7

BGP multipath. See BGP loadsharing

BGP peers

authentication (note) 11-2

configuring 10-14, 10-17

description 10-3

BGP route aggregation

description 11-8

BGP route dampening 11-6

BGP route redistribution

configuring 11-44

description 11-10

BGP sessions

reset options 11-3

resetting 11-25

route policies 11-3

BGP templates

configuring peer-policy templates 11-18

configuring peer templates 11-21

configuring session templates 11-16

description 11-2

peer-policy templates 11-2

peer-session templates 11-2

peer template 11-2

bidirectional forwarding detection

see BFD 13-4

Border Gateway Protocol. See BGP

C

CDP 3-12

communication cost 1-4

community lists

configuring 17-10, 17-11

description 17-4

comparing

link-state and distance vector routing algorithms 1-10

Configuring an HSRP Group as a Master Group 20-17

Configuring an HSRP Group for MGO 20-17

D

default gateway

description 1-9

default settings

BGP 10-9, 11-15

DNS 4-3

EIGRP 8-11

GLBP 5-8, 19-7

HSRP 20-11

IP 2-7

IPv6 3-18

IS-IS 9-7

object tracking 22-4

OSPF 6-14

OSPFv3 7-15

policy-based routing 18-4

RIP 12-5

Route Policy Manager 17-6

static routing 13-5

VRF 15-6, 16-5

VRRP 21-9

delay 1-4

distance vector routing algorithms 1-10

distribution

RIP 12-3

DNS 3-12

configuring clients 4-4

configuring with VRFs 4-5

default settings 4-3

description 4-1

example configuration 4-8

feature history (table) 4-8

guidelines 4-3

high availability 4-2

licensing requirements 4-3

limitations 4-3

name servers 4-2

operation 4-2

prerequisites 4-3

verifying configuration 4-7

virtualization 4-2

documentation

additional publications iv-xxxv

domain name server. See DNS

DR 6-3

E

eBGP

configuring 11-27, 11-29

configuring AS confederations 11-31

configuring multihop 11-30

description 11-3

disabling fast external fallover 11-30

disabling single-hop checking 11-30

limiting the AS-path attribute 11-31

eBGP AS confederations. See AS confederations

ECMP. See equal cost multipath

EIGRP

administrative distance 8-7

authentication 8-6

BFD 8-8

configuring administrative distance 8-24

configuring a summary address 8-19

configuring authentication 8-17

configuring graceful restart 8-28

configuring hello interval 8-30

configuring load balancing 8-27

configuring route-map filtering 8-24

configuring route redistribution 8-20

configuring stub routing 8-19

configuring with VRFs 8-34

creating an instance 8-12

default settings 8-11

deleting an instance 8-14

description8-1to 8-9

disabling an instance 8-15

disabling split horizon 8-31

disabling the feature 8-12

displaying statistics 8-36

DUAL algorithm 8-3

ECMP 8-7

enabling the feature 8-11

example configuration 8-36

external route metrics 8-5

feature history (table) 8-38

graceful restart 8-8

guidelines 8-10

high availability 8-8

hold time 8-2

internal route metrics 8-3

licensing requirements 8-9

limitations 8-10

limit redistributed routes 8-22

load balancing 8-7

neighbor discovery 8-2

prerequisites 8-10

restarting an instance 8-15

route redistribution 8-7

route summarization 8-7

route updates 8-3

shutting down on an interface 8-15, 8-16

split horizon 8-8

stub routers 8-6

tuning 8-32

unicast RIB 8-5

verifying configuration 8-35

eigrp

passive interface 8-15

equal cost multipath 1-6

extended community lists

description 17-4

external BGP. See eBGP

F

FIB

clearing routes 16-14

description 1-12, 16-1

displaying 16-6

dynamic TCAM allocation 16-3

feature history (table) 16-20

guidelines 16-5

licensing requirements 16-4

limitations 16-5

verifying 16-19

virtualization support 16-4

VRFs 1-12

forwarding

adjacency manager 1-12

architecture 1-11, 16-1

FIB 1-12

unicast forwarding distribution module 1-12

forwarding information base. See FIB

F Series modules interoperation 1-13, 14-3

G

Gateway Load Balancing Protocol. See GLBP

GLBP

configuring authentication 19-9

configuring extended hold timers 19-15

configuring load balancing 19-11

configuring weighting and tracking 19-11

customizing 19-14

default settings 5-8, 19-7

description 19-1

enabling a group 19-15

example configuration 19-17

extended nonstop forwarding 19-6

feature history (table) 5-14, 19-18

verifying configuration 5-13, 19-17

graceful restart

BGP 11-12

configuring in BGP 11-54

configuring in EIGRP 8-28

configuring in IS-IS 9-28

configuring in OSPF 6-43

configuring in OSPFv3 7-42

EIGRP 8-8

gratuitous ARP

configuring 2-13

description 2-5

H

high availability

BGP 11-12

DNS 4-2

EIGRP 8-8

object tracking 22-3

RIP 12-4

Hot Standby Router Protocol. See HSRP

HSRP

addressing 20-4

BFD 20-9

configuring a group 20-13

configuring a group for MGO 20-17

configuring an IPv6 group 20-15

configuring a slave group 20-19

configuring extended hold timers 20-28

configuring priority 20-26, 20-30

customizing 20-27

default settings 20-11

description20-2to 20-9

disabling the feature 20-12

enabling the feature 20-12

example configuration 20-29

extended NSF 19-6, 20-9

fabricpath anycast 20-8

feature history (table) 20-30

guidelines 20-10

hold timers 19-6, 20-9

licensing requirements 20-9

limitations 20-10

load sharing 20-6

messages 20-6

multiple group optimization 20-5

standby router 20-2

verifying configuration 20-29

virtualization support 20-9

vPC support 20-8

HSRP authentication

configuring 20-22

description 20-6

HSRP object tracking

configuring 20-24

description 20-7

HSRP versions

configuring 20-12

description 20-3

HSRP virtual MAC address

configuring 20-21

description 20-2

I

iBGP

configuring route reflector 11-32

description 11-3

iBGP route reflector. See route reflector

ICMP

description 2-6

with local proxy ARP (note) 2-6

ICMPv6 3-12

packet header format (figure) 3-13

IDS, enabling 2-17, 3-25

Intermediate System-to-Intermediate System. See IS-IS

internal BGP. See iBGP

Internet Control Message Protocol. See ICMP

IP

addresses 2-2

ARP. See ARP

configuring addresses 2-8

configuring glean optimization 2-15

configuring IP ARP cache limit 2-14

configuring secondary addresses 2-9

default settings 2-7

description2-1to 2-6, 16-4

enabling IDS checks 2-17

enabling packet verification 2-17

feature history (table) 2-27

guidelines 2-7

ICMP. See ICMP

licensing requirements 2-6

limitations 2-7

packet header 3-9

port reservation example configuration 2-23, 2-25, 2-26

prerequisites 2-6

secondary addresses (note) 2-2

subnet masks 2-1

verifying configuration 2-22

virtualization support 2-6

IPv4. See IP

IPv6

addresses compatible with IPv4 3-5

address formats 3-2

address formats (table) 3-2

anycast addresses 3-7

CDP 3-12

configuring addresses 3-19

configuring neighbor discovery 3-21

default settings 3-18

description3-1to 3-17

DNS 3-12

enabling IDS checks 3-25

enabling packet verification 3-25

EUI-64 format 3-4

example configuration 3-26

feature history (table) 3-27

guidelines 3-18

ICMP 3-12

interface ID 3-4

licensing requirements 3-18

limitations 3-18

link-local addresses 3-5

loopback address (note) 3-3

multicast addresses 3-7

neighbor discovery 3-13

neighbor redirect message 3-16

neighbor solicitation message 3-13

packet header 3-9

path MTU discovery 3-12

prerequisites 3-18

RFC 3-3, 3-4

router advertisement message 3-15

site-local address 3-7

subnet ID 3-4

unicast addresses 3-3

unique local addresses 3-6

unspecified address (note) 3-3

verifying configuration 3-26

virtualization support 3-17

IS-IS

address families 9-9

administrative distance 9-5

BFD 9-5

clearing statistics 9-35

configuration modes 9-9

configuring default passive interfaces 9-15

configuring dynamic host exchange 9-20

configuring on an interface 9-13

configuring the administrative distance 9-26

configuring with VRFs 9-29

default settings 9-7

description??to8-9, 9-1to 9-6

disabling strict adjacency mode 9-27

disabling the feature 9-10

displaying statistics 9-34

enabling the feature 9-9

example configuration 9-35

feature history (table) 9-36

guidelines 9-7

IPv6 support 9-1

licensing requirements 9-7

limitations 9-7

limit redistributed routes 9-24

LSPs 9-2

NET 9-3

prerequisites 9-7

shut down an interface 9-15

system ID 9-3

tuning 9-32

verifying configuration 9-33

virtualization support 9-6

IS-IS areas

description 9-2

IS-IS authentication

configuring in an area 9-17

configuring on an interface 9-18

description 9-3

IS-IS designated intermediate system 9-3

configuring 9-20

IS-IS graceful restart

configuring 9-28

IS-IS instances

configuring optional parameters 9-12

creating 9-10

deleting 9-11

multiple instance support 8-9, 9-6

restarting 9-13

IS-IS load balancing

configuring 9-12

description 9-5

IS-IS mesh group

configuring 9-19

IS-IS mess group

description 9-4

IS-IS overload bit

configuring 9-20

description 9-4

IS-IS route redistribution

configuring 9-22

description 9-5

IS-IS route summarization

configuring 9-21

description 9-4

L

Layer 3 14-2

Layer 3 consistency checker

description 16-2

triggering 16-13

Layer 3 routing, configuring using a mixed chassis 13-9

licensing requirements 10-8

BGP 11-13

DNS 4-3

EIGRP 8-9

FIB 16-4

HSRP 20-9

IP 2-6

IPv6 3-18

IS-IS 9-7

object tracking 22-3

OSPF 6-13

OSPFv3 7-13

policy-based routing 18-3

RIP 12-4

Route Policy Manager 17-5

static routing 13-4, 14-2

uRIB 16-4

VRF 15-5

VRRP 21-8

link-state advertisements 6-1

link-state routing algorithms 1-10

load 1-4

load balancing 1-6

Local Proxy ARP

configuring 2-12

description 2-5

LSAs 7-6

for OSPFv3 (table) 7-6

M

MAC lists

description 17-2

maximum routes for unicast RIB, configuring 16-14

MIBs

BGP 8-38, 10-25

OSPF 6-49, 20-30

OSPFv3 7-48

mixed chassis

F1 Series and M Series modules 14-1

MP-BGP 11-11

configuring 11-47

Multiple Group Optimization for HSRP 20-3

Multiprotocol BGP

see MP-BGP

N

ND

configuring 3-21

description 3-13

neighbor discovery. See ND

neighbor redirect message 3-16

new and changed features (table) iii-xxvii

next hop 1-2

next-hops

configuring on reflected routes using an outbound route-map 11-34

NSSA 6-9

configuring 6-28

description for OSPFv3 7-10

O

object tracking

configuring a delay 22-12

configuring a track list with boolean expression 22-7

configuring a track list with percentage 22-9, 22-10

configuring for a nonDefault VRF 22-14

configuring for GLBP 19-11

configuring for route reachability 22-6

configuring on an interface 22-4

default settings 22-4

description 22-1

example configuration 22-15

feature history (table) 22-16

guidelines 22-4

high availability 22-3

licensing requirements 22-3

limitations 22-4

prerequisites 22-3

track list 22-2

verifying configuration 22-15

virtualization support 22-3

Open Shortest Path First. See OSPF

Open Shortest Path First version 3. See OSPFv3

OSPF

adjacency 6-1, 6-3

area border router 6-5

areas 6-1, 6-4

AS border router 6-5

authentication 6-7

backup designated router 6-3

BFD 6-12

configuring area authentication 6-22

configuring a totally stubby area 6-28

configuring authentication 6-21

configuring authentication on an interface 6-22

configuring DR priority 6-20

configuring ECMP 6-18

configuring filter lists 6-25

configuring graceful restart 6-43

configuring load balancing 6-18

configuring MD5 authentication 6-22

configuring networks 6-18

configuring NSSA 6-28

configuring on an interface 6-18

configuring optional parameters on an interface 6-20

configuring redistribution 6-32

configuring route summarization 6-36

configuring simple password authentication 6-22

configuring stub areas 6-26

configuring stub route advertisements 6-37

configuring the hello interval 6-20

configuring virtual links 6-30

configuring with VRFs 6-45

creating an instance 6-16

dead interval 6-2

default settings 6-14

description 6-1

designated router 6-3

disable the feature 6-16

displaying statistics 6-48

enable the feature 6-15

example configuration 6-48

feature history (table) 6-50

guidelines 6-13

hello interval 6-2

hello packet 6-2

licensing requirements 6-13

limitations 6-13

link cost 6-6

link-state database 6-7

LSA 6-1

LSA flooding 6-6

LSA pacing 6-6

LSAs6-5to 6-7

LSA types (table) 6-6

MIBs 6-49, 20-30

modifying default timers 6-41

multiple instances 6-12

neighbors 6-3

not-so-stubby area 6-9

NSSA 6-9

opaque LSAs 6-7

prerequisites 6-13

redistributed routes 6-34

restarting an instance 6-45

route redistribution

description 6-10

route summarization

description 6-10

shutting down an instance 6-20

SPF optimization 6-12

stub area 6-8

stub area (figure) 6-9

stub router advertisements

description 6-12

unicast RIB 6-7

verifying configuration 6-47

virtualization support 6-12

virtual link 6-9

virtual link (figure) 6-10

OSPFv2

administrative distance guidelines 6-14

administrative distance limitations 6-14

configuring the administrative distance of routes 6-38

OSPFv2 (Open Shortest Path First Version 2)

description 7-1

OSPFv2. See OSPF

OSPFv3

address families 7-9

adjacency 7-3

administrative distance guidelines 7-14

administrative distance limitations 7-14

areas 7-5

comparison to OSPFv2 7-2

configuring ECMP 7-19

configuring filter lists 7-22

configuring graceful restart 7-42

configuring load balancing 7-19

configuring max-matric router LSA 7-41

configuring networks 7-19

configuring NSSA 7-25

configuring redistribution 7-31

configuring route summarization 7-34

configuring stub areas 7-24

configuring the administrative distance of routes 7-36

configuring totally stubby areas 7-25

configuring virtual links 7-29

configuring with VRFs 7-44

creating an instance 7-17

default settings 7-15

description7-1to 7-13

displaying statistics 7-47

enabling the feature 7-16

example configuration 7-47

feature history (table) 7-48

guidelines 7-14

licensing requirements 7-13

limitations 7-14

link cost 7-7

link-state database 7-8

LSA flooding 7-7

LSA pacing 7-7

LSAs 7-6

LSA types (table) 7-6

MIBs 7-48

modifying default timers 7-39

multiple instances 7-13

neighbors 7-3

NSSA 7-10

prerequisites 7-14

redistributed routes 7-32

restarting an instance 7-44

RFC 7-2

route redistribution 7-11

route summarization 7-11

SPF optimization 7-13

unicast RIB 7-8

verifying configuration 7-46

virtualization support 7-13

virtual links 7-10

outbound route-map 11-34

P

path length 1-4

path MTU discovery 3-12

policy-based routing

configuring a route policy 18-5

configuring local policy routing 18-8

configuring match parameters 18-7

configuring set parameters 18-7

default settings 18-4

description 18-1

disabling 18-5

enabling 18-4

example configuration 18-9

feature history (table) 18-11

guidelines 18-3

licensing requirements 18-3

limitations 18-3

prerequisites 18-3

route maps 18-2

set criteria 18-2

verifying configuration 18-9

policy route maps

description 18-2

prefix lists

configuring 17-7

description 17-2

Proxy ARP

configuring 2-11

description 2-5

proxy routing 14-2

R

redistiribution

description 1-7

redistribution 1-5

BGP 11-10

configuring for OSPF 6-32

configuring for OSPFv3 7-31

configuring in BGP 11-44

configuring in IS-IS 9-22

configuring in RIP 12-11

configuring on EIGRP 8-20

EIGRP 8-7

IS-IS 9-5

maximum limit for EIGRP 8-22

maximum limit for IS-IS 9-24

maximum limit for OSPF 6-34

maximum limit for OSPFv3 7-32

with route maps 17-5

related documents iv-xxxv

reliability 1-4

Reverse ARP

description 2-4

limitations 2-4

RFC 2-4

RIB

description 1-11, 16-2

see uRIB

RIP

clearing statistics 12-19

configuring a passive interface 12-11

configuring for compatibility with Cisco IOS RIP 12-13

configuring on an interface 12-8

configuring with VRFs 12-14

default settings 12-5

description 12-2

displaying statistics 12-18

enabling the feature 12-5

example configuration 12-19

feature history (table) 12-20

guidelines 12-5

high availability 12-4

licensing requirements 12-4

limitations 12-5

prerequisites 12-4

route filtering 12-3

tuning 12-17

verifying configuration 12-18

virtualization support 12-4

RIP authentication

configuring 12-9

description 12-2

RIP instance

creating 12-6

optional parameters 12-8

restarting 12-8

RIP load balancing

configuring 12-8

description 12-4

RIP route distribution

description 12-3

RIP route redistribution

configuring 12-11

RIP route summarization

configuring 12-11

description 12-3

RIP split horizon

configuring with poison reverse 12-11

description 12-2

route maps

configuring 17-13

configuring match parameters 17-14

configuring set parameters 17-16

description 17-2

example configuration 17-20

for policy -based routing 18-2

match criteria 17-3

redistribution 17-5

set changes 17-3

route metric

bandwidth 1-4

communication cost 1-4

delay 1-4

load 1-4

path length 1-4

reliability 1-4

route policy

configuring 18-5

configuring match parameters 18-7

configuring set parameters 18-7

description 18-1

example configuration 18-9

Route Policy Manager

default settings 17-6

example configuration 17-20

guidelines 17-6

licensing requirements 17-5

limitations 17-6

prerequisite 17-6

route policy manager

description17-1to 17-5

verifying configuration 17-20

router advertisement message 3-15

route redistribution

OSPFv3 7-11

route reflector

configuring 11-32

description 11-5

router ID

description 1-5

routes, estimating memory requirements 16-15

route summarization

configuring 6-36

configuring in IS-IS 9-21

configuring on EIGRP 8-19

EIGRP 8-7

ISIS 9-4

OSPFv3 7-11, 7-34

RIP 12-3

route table

description 1-2

routing

F Series module 1-13, 14-3

routing algorithms

distance vector 1-9, 1-10

link-state 1-9, 1-10

Routing Information Protocol. See RIP

routing metrics

description 1-2

routing protocols

administrative distance 1-7, 6-38

comparing link-state algorithms to distance vector algorithms 1-10

convergence. convergence 1-6

description1-1to 1-8

distance vector 1-10

link-state 1-10

next hop 1-2

redistribution 1-5, 1-7

virtualization 1-10

S

static routes

BFD 13-4

description 1-8

virtualization support 13-4

static routing

administrative distance 13-2

configuring 13-5

configuring reliable static routing backup 13-6

configuring with VRFs 13-8

default settings 13-5

description 13-1, 14-1

example configuration 13-10

feature history (table) 13-11, 14-4

guidelines 13-4, 14-2

licensing requirements 13-4, 14-2

limitations 13-4, 14-2

prerequisites 13-4

reliable static routing backup 13-3

stub routing

description 1-7

U

uRIB

checking routes in the unicast FIB 16-9

clearing routes 16-16

description 16-1

displaying 16-12

displaying (example) 16-12

feature history (table) 16-20

guidelines 16-5

Layer 3 consistency checker 16-2

licensing requirements 16-4

limitations 16-5

monitoring TCAM utilization 16-16

verifying 16-19

virtualization support 16-4

V

virtualization

description 1-10, 15-1

layer 3 (figure) 1-10

Virtual Router Redundancy Protocol. See VRRP

VLAN interface 14-2

VRF

assigning an interface to a VRF 15-8

configuring routing parameters 15-9

creating 15-7

default settings 15-6, 16-5

deleting 15-8

description 15-2

example configuration 15-13

guidelines 15-6

licensing requirements 15-5

limitations 15-6

prerequisites 15-6

setting the routing context 15-12

setting the scope 15-12

verifying configuration 15-13

vrf

feature history (table) 15-15

VRF-aware services

configuring 15-11

description 15-3

VRF filtering

description 15-5

example configuration 15-12

VRF reachability

description 15-4

example configuration 15-12

VRRP

benefits 21-3

clearing statistics 21-27

configuring time intervals for advertisement packets 21-14

default settings 21-9

description21-1to 21-7

disabling the feature 21-10, 21-20

displaying statistics 21-27

enabling the feature 21-10, 21-19

example configuration 21-27

feature history (table) 21-29

guidelines 21-8

licensing requirements 21-8

limitations 21-8

verifying configuration 21-26

virtualization support 21-6

vPC support 21-5

VRRPv3 21-7

benefits 21-7

configuring VRRPv3 21-19

guidelines 21-8

limitations 21-8

VRRS 21-7

VRRP advertisements

description 21-5

VRRP authentication

configuring 21-13

description 21-5

VRRP groups

configuring 21-10

VRRP priority

configuring 21-12

description 21-5

disabling preemption 21-16

preemption 21-5

VRRP tracking

configuring 21-17

description 21-6

W

Web Cache Communication Protocol. See WCCP