# Index

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

A

> ABRs (area border routers), OSPF
>   configuring area range
>   defined
> access lists, IP
>   monitoring
> access-list command
>   IS-IS
>   OSPF
> address commands, OSPF
>   address area
>   address authentication key
>   address authentication message-digest
>   address authentication-none
>   address cost
>   address dead-interval
>   address hello-interval
>   address message-digest-key
>   address network
>   address passive-interface
>   address priority
>   address retransmit-interval
>   address transmit-delay
> address commands, RIP
>   address
>   address authentication key
>   address authentication mode
>   address receive version
>   address send version
> address ranges
>   IS-IS
> Address Resolution Protocol. See ARP
> address-family command
> adjacencies, clearing IS-IS
> adjacency levels, IS-IS
>   displaying information on
>   logging changes between
> adjacency, OPSF
> administrative distance
>   IS-IS
>   OSPF
>   RIP
> aggregate addresses
>   IS-IS
>   OSPF routing 1, 2
> area border routers. See ABRs, OSPF
> area commands
>   area
>   area default-cost
>   area nssa
>   area range
>   area stub
> area IDs (OSPF packets)
> area virtual-link commands
>   area virtual-link
>   area virtual-link authentication message-digest
>   area virtual-link authentication-key
>   area virtual-link authentication-none
>   area virtual-link dead-interval
>   area virtual-link hello-interval
>   area virtual-link message-digest-key md5
>   area virtual-link retransmit-interval
>   area virtual-link transmit-delay
> area-authentication command
> area-authentication-key command
> area-message-digest-key command 1, 2
> areas, IS-IS
> areas, OSPF
>   configuring 1, 2
>   defining 1, 2
>   stub areas 1, 2
> ARP (Address Resolution Protocol)
>   ARP protocol
>   hosts
>   physical and logical addresses
> arp commands See also show arp command
>   arp
>   arp timeout
> AS (autonomous system)
> AS boundary router
>   default route and
>   OSPF
> authentication
>   configuring, OSPF
>   IS-IS HMAC MD5 1, 2
>   IS-IS key commands
>   IS-IS MD5 packet timing
>   IS-IS MD5 start and stop timing
>   IS-IS, halting
>   managing and replacing IS-IS keys
>   OSPF
>   OSPF modes
>   RIP
>   type
> authentication commands
>   authentication key
>   authentication message-digest
>   authentication mode
> authentication-key command
> authentication-none command
> autocost, OSPF routing
> automatic virtual link, OSPF
> automatic virtual-link command
> autonomous system boundary router (AS boundary router). See AS boundary router

B

> B-RAS applications
>   creating an IP profile
>   creating an IPv6 profile
> backbone area, OSPF
> bandwidth
>   OSPF interface cost by
> baseline commands
>   baseline clns
>   baseline ip
>   baseline ip ospf
>   baseline ip rip
>   baseline ip udp
>   baseline ipv6 interface
>   baseline ipv6 local pool
>   baseline tcp 1, 2
> BFD (Bidirectional Forwarding Detection)
>   RIP, configuring for
> BFD commands
>   ip route bfd-liveness-detection
> BGP (Border Gateway Protocol)
>   community lists
>   OSPF routing with
> BGP/MPLS VPNs
>   interaction with OSPF
> black holes, avoiding IS-IS
> black holing
>   packets for non-existent hosts
>     reaching null 0 static routes
> border routers, OSPF
> broadcast addressing
> broadcast circuits, IS-IS
> broadcast storms

C

> CIDR (Classless Interdomain Routing) 1, 2
> classes of IP addresses
> Classless Interdomain Routing. See CIDR
> clear arp command
> clear ip commands
>   clear ip interface
>   clear ip isis redistribution
>   clear ip ospf redistribution
>   clear ip routes
>   clear ipv6 ospf redistribution
> clear ipv6 commands
>   clear ipv6 interface
>   clear ipv6 ospf counters
>   clear ipv6 ospf process
> clear isis commands
>   clear isis adjacency
>   clear isis database 1, 2
>   clear isis ipv6 redistribution
> CLNP (Connectionless Network Protocol)
> CLNS (Connectionless Network Service Protocol)
>   defined
>   displaying
> clns commands See also show clns commands
>   clns configuration-time
>   clns holding-time
>   clns host
> community lists, BGP
> complete sequence number PDU. See CSNP
> connection-oriented protocols
> Connectionless Network Protocol. See CLNP
> Connectionless Network Service Protocol. See CLNS
> connectionless protocols 1, 2
> conventions
>   notice icons
>   text and syntax
> cost
>   IS-IS interface 1, 2
>   OSPF routing
>     autocost
>     default cost
>     equal-cost multipath
> cost command
> cryptographic authentication, OSPF
> CSNP (complete sequence number PDU)
> CSNP interval, IS-IS interface
> customer support
>   contacting JTAC

D

> data path failure
>   detecting RIP
> database, OSPF
> datagrams, IP
>   defined
>   fragmenting and reassembling 1, 2
> dead interval, OSPF 1, 2
> dead-interval command
> debounce-time command
> debug commands
>   debug ip ospf
>   debug ip rip
>   debug isis
> debug-related information, IS-IS 1, 2
> default routes
>   cost, OSPF
>   IP routing
>   IS-IS routing 1, 2
>   OSPF routing
>   suppressing IS-IS
> default-information originate command
>   IS-IS
>   OSPF
>   RIP
> default-metric command
> description
>   adding to IP interfaces
>   adding to IPv6 interfaces
> DHCPv6 Prefix Delegation
>   IPv6 local address pools and
>     baseline ipv6 local pool command
>     setting a baseline
>     show ipv6 local pool command
>     viewing parameters
> directed broadcast packets
> directed broadcasts, enabling
> directly connected networks
> disable command
> disable-dynamic-redistribute command
>   IS-IS
>   OSPF
>   RIP
> disable-incremental-external-spf command
> discarded packets
>   for static routes with null 0 interfaces
>     disabling the sending of ICMP unreachables
>     enabling the sending of ICMP unreachables
>     viewing the count of, for which unreachables are not sent
>     viewing the count of, for which unreachables are sent
>     viewing the number of ICMP unreachables sent
> distance commands
>   distance
>   distance ip
>   distance ospf
> distance, RIP administrative
> distribute-domain-wide command
> distribute-list command 1, 2
> documentation set
>   comments on
> domain, OSPF
> domain-authentication command
> domain-authentication-key command
> domain-message-digest-key command 1, 2
> domain-wide prefix distribution
> dropped packets, troubleshooting
> DRs (designated routers)
>   IS-IS routing
>   OSPF routing
> dynamic hostname resolution, IS-IS
> dynamic route redistribution, disabling
>   in IS-IS
>   in OSPF
>   in RIP

E

> ECMP (equal-cost multipath)
>   IP 1, 2
>   IS-IS 1, 2
>   OSPF 1, 2, 3
>   RIP 1, 2
> end system. See ES
> entry, routing table
> equal-cost multipath. See ECMP
> ES (end system)
>   hello packet rate
>   neighbor information
> Ethernet commands, interface fastEthernet
> Ethernet controllers
> exit-address-family command
> exit-remote-neighbor command
> exponential back-off SPF calculation, IS-IS
> external routes, OSPF
> E Series routers
>   IP features
>   IPv6 features
>   IS-IS features

F

> fabric congestion
> flooded broadcast packets
> flooding
> forwarding controller
>   black holing oversized ping packets
>     arriving at null 0 static routes
>   discarding packets for null 0 interfaces with static routes
>     creating an exception to the SRP module for dropped packets
> forwarding table
> fragmenting IP datagrams 1, 2
> frequency command
> full spf, IS-IS
> full-spf-always command

G

> gateways
> global default metric, IS-IS
> global IP routing table
> graceful restart, IS-IS
>   commands. See nsf commands
>   configuring
>   monitoring 1, 2
>   overview
>   timers 1, 2
> group (multicast) addressing

H

> hash functions
> hashcheck process
> hello interval
>   IS-IS interface 1, 2
>   OSPF interface 1, 2
> hello multiplier, IS-IS interface
> hello packet validity rate, IS-IS
> Hello protocol
> hello-interval command
> HMAC MD5
>   authentication, IS-IS
>   IS-IS area-wide password
>   IS-IS domain-wide password
>   IS-IS password on the interface
> hold time
>   IS-IS
>   IS-IS SPF
>   SPF
> hop count
> hops, verifying for static routes
>   configuring
>     example
>     steps for
>   overview
> hops-of-statistics-kept command
> host access routes on PPP interface
> host subnets
>   as static routes
>     pointing to null 0 interfaces
>     traffic for non-existing subscribers that follow null 0 static route
>     traffic for subscribers with an assigned route
> hosts

I

> ICMP (Internet Control Message Protocol)
>   echo request packets
>     IP
>     IPv6
>   ICMP messages and
> ICMP unreachable messages
>   disabling the sending of
>     for packets reaching null 0 static routes
>   enabling the sending of
>     for packets reaching null 0 static routes
>   for packets reaching interfaces other than null 0
>     dependence on the IP unreachables setting on the interface
>   sending to originator for packets reaching null 0 static routes
>     and synchronizing RADIUS settings with client network
>   sent to the originator for discarded packets at null 0 routes
>     viewing the number of
> icmp update-source command
> ignore-attached-bit command
> ignore-lsp-errors command
> IGP (interior gateway protocol)
> incremental SPF
> Integrated IS-IS routing
> interarea routes, OSPF
> interface commands
>   interface fastEthernet
>   interface ip
>   interface ipv6
>   interface loopback
> interface-event-disable command
> interfaces
>   IPv6, enabling and disabling
> interior gateway protocol. See IGP
> Intermediate System-to-Intermediate System. See IS-IS
> intermediate system. See IS
> Internet addresses
> Internet Control Message Protocol. See ICMP
> Internet Layer, TCP/IP
> interval rate, LSP (IS-IS)
> intra-area routes, OSPF
> IP
>   ARP protocol 1, 2
>   assigning router IDs
>   broadcast addressing 1, 2
>   E Series router features
>   ECMP 1, 2
>   functions of
>   ICMP and 1, 2
>   layers of
>   monitoring
>   profile
>   reachability commands
>   routing
>   source address verification 1, 2
> IP addresses
>   classes of
>   interfaces without (unnumbered)
>   multinetting
>   OSPF routing costs and
>   primary
>     adding
>     deleting
>   router IDs and
>   secondary
>     adding
>     deleting
> ip commands See also show ip commands
>   clear ip ospf neighbor
>   ip access-routes 1, 2
>   ip address 1, 2
>   ip alwaysup
>   ip broadcast-address
>   ip debounce-time
>   ip description
>   ip directed-address
>   ip directed-broadcast
>   ip disable-forwarding
>   ip icmp update-source
>   ip ignore-df-bit
>   ip irdp 1, 2
>   ip mask-reply
>   ip mtu 1, 2
>   ip multipath round-robin
>   ip proxy-arp
>   ip redirects 1, 2
>   ip refresh-route
>   ip route 1, 2
>   ip route verify rtr 1, 2
>   ip route-type 1, 2, 3
>   ip router isis 1, 2
>   ip router-id
>   ip sa-validate 1, 2, 3
>   ip share-interface 1, 2
>   ip share-nexthop
>   ip shutdown
>   ip source-route
>   ip speed
>   ip split-horizon
>   ip tcp adjust-mss 1, 2
>   ip unnumbered 1, 2
>   ip unnumbered loopback
>   ip unreachables
>   no ip interface
> IP interfaces
>   adding a description 1, 2
>   clearing
>   creating
>   primary
>   removing IP configuration
>   setting a baseline
>   shared
>   sharing
>   shutting down
>   unnumbered
> ip ospf commands See also show ip ospf commands
>   ip ospf authentication message-digest
>   ip ospf authentication-key
>   ip ospf authentication-none
>   ip ospf bfd-liveness-detection
>   ip ospf cost
>   ip ospf dead-interval
>   ip ospf hello-interval
>   ip ospf message-digest-key
>   ip ospf network
>   ip ospf priority
>   ip ospf retransmit-interval
>   ip ospf shutdown
>   ip ospf transmit-delay
> IP profile, B-RAS
> IP profile, creating
>   access routes
>   address
>   auto-configure
>   auto-detect
>   directed broadcast
>   filter-options-all
>   IGMP
>   ignore-df-bit
>   inactivity-timer
>   inspection
>   mtu (maximum transmission unit)
>   nat
>   policy
>   redirects
>   route-maps
>   source address validation
>   tcp adjust-mss
>   unnumbered
>   virtual router
> IP redirects, enabling
> ip rip commands See also show ip rip commands
>   ip rip
>   ip rip authentication key
>   ip rip authentication mode
>   ip rip bfd-liveness-detection
>   ip rip receive version 1, 2, 3
>   ip rip send version
> IP routing. See routing, IP
> IPv6
>   address, defining
>   addressing
>     compression and
>     prefix
>     scope
>     structure
>     types of
>     understanding
>   configuring neighbor discovery
>   configuring neighbor discovery with profiles
>   configuring neighbor discovery with RADIUS 1, 2
>   E Series router features
>   enabling and disabling
>   headers
>     extensions
>     standard
>   ICMP and
>   instance, creating an
>   interfaces
>     clearing
>     managing
>     unnumbered
>   license 1, 2
>   monitoring
>   neighbor discovery and profiles
>   neighbor discovery, defining 1, 2
>   neighbors, creating 1, 2
>   overview
>   packet headers
>   ping and
>   profile
>   references 1, 2
>   source address verification
>   static routes and
>   traceroute and
> ipv6 commands
>   ipv6
>   ipv6 address 1, 2
>   ipv6 description
>   ipv6 enable
>   ipv6 mtu
>   ipv6 nd 1, 2, 3
>   ipv6 nd dad attempts
>   ipv6 nd managed-config-flag 1, 2
>   ipv6 nd ns-interval
>   ipv6 nd prefix-advertisement
>   ipv6 nd ra-interval 1, 2
>   ipv6 nd reachable-time 1, 2
>   ipv6 nd suppress-ra
>   ipv6 nd suppress-ra-source-link-layer
>   ipv6 neighbor 1, 2, 3, 4, 5, 6
>   ipv6 neighbor proxy
>   ipv6 route 1, 2
>   ipv6 router isis
>   ipv6 routes
>   ipv6 unnumbered
>   ipv6 virtual-router
> IPv6 interfaces
>   creating
>   sharing
> IPv6 local address pools
>   baseline ipv6 local pool command
>   for DHCPv6 Prefix Delegation
>     viewing parameters
>   monitoring
>     details for a single pool
>     details for all configured pools
>     statistics for a single pool
>   viewing
>     baseline statistics
> ipv6 nd commands
>   ipv6 nd
>   ipv6 nd active-solicitations
>   ipv6 nd dad attempts
>   ipv6 nd managed-config-flag 1, 2
>   ipv6 nd ns-interval
>   ipv6 nd reachable-time
> IPv6 neighbor discovery commands
>   ipv6 nd
> ipv6 ospf commands See also show ipv6 ospf commands
>   ipv6 ospf area
>   ipv6 ospf bfd-liveness-detection
>   ipv6 ospf cost
>   ipv6 ospf dead-interval
>   ipv6 ospf hello-interval
>   ipv6 ospf mtu-ignore
>   ipv6 ospf network
>   ipv6 ospf priority
>   ipv6 ospf retransmit-interval
>   ipv6 ospf shutdown
>   ipv6 ospf transmit-delay
> IPv6 profile, creating
>   address
>   ipv6-virtual-router
>   mld (multicast listener discovery)
>   mtu (maximum transmission unit)
>   nd (neighbor discovery)
>   policy
>   sa-validate
>   unnumbered
> IPv6 routing with IS-IS
> IRDP (ICMP Router Discovery Protocol), enabling
>   ICMP messages and<
> IS (intermediate system)
>   hello packet rate
>   neighbor information
> IS-IS (Intermediate System-to-Intermediate System)
>   adjacencies, clearing
>   advertising
>     passive interfaces
>   avoiding black holes
>   broadcast circuits
>   circuit type
>   configuring
>     default routes
>     for MPLS
>     global parameters
>     interface-specific parameters
>     redistribution
>   configuring the router to be ignored
>   displaying CLNS 1, 2
>   Disregarding
>     attach bit
>   dynamic hostname resolution
>   ECMP
>   enabling
>   enabling for IPv6
>   exponential back-off SPF calculation
>   features
>   global default metric
>     for active interfaces
>     for passive interfaces
>   graceful restart
>     and black hole avoidance
>     configuring
>     monitoring 1, 2
>     overview
>     timers 1, 2
>   hello packet validity rate
>   HMAC MD5 authentication
>     for level 1 packets
>     for level 2 packets
>     on the interface
>   Integrated IS-IS
>   IPv6 routing
>   level 1 routing
>   level 2 routing
>   LSPs. See LSPs, IS-IS
>   metric, global default
>   monitoring
>   MPLS and
>   network entity title 1, 2
>   overload bit
>   point-to-point circuits
>   point-to-point-over-LAN circuits
>   redistributing routes between levels
>   route leaking
>   route tags
>     and route maps
>     configuring
>     defined
>     for default routes
>     for IS-IS interfaces
>     for passive interfaces
>     for redistribution 1, 2
>     for summary routes
>     monitoring
>     overview
>     unsupported features
>     using
>   router type
>   routes
>     summarizing
>     using for multicast RPF checks
>   routing levels/layers 1, 2, 3, 4
>   SPF calculation
>   starting and stopping MD5 packets
>   suboptimal paths, correcting 1, 2
>   summarizing routes
>   suppressing default routes
>   system identifier
>   table maps
>     configuring
>     defined
>     overview
>   topology elements
>   traffic engineering
>   troubleshooting
> IS-IS protocol, OSPF routing with
> is-type command
> isis commands See also show isis commands
>   isis authentication-key
>   isis bfd-liveness-detection
>   isis circuit-type
>   isis csnp-interval
>   isis hello padding
>   isis hello-interval
>   isis hello-multiplier
>   isis lsp-interval
>   isis mesh-group
>   isis message-digest-key
>   isis metric
>   isis network point-to-point
>   isis priority
>   isis retransmit-interval
>   isis retransmit-throttle-interval
>   isis tag
> ISO 10589. See IS-IS
> ISO address

L

> leakage, OSPF route
> level 1 routing, IS-IS
> level 2 routing, IS-IS
> levels of IS-IS routing 1, 2, 3, 4
> license commands
>   license ipv6 command
> limited broadcast packets
> line modules
>   forwarding table on
> link-state advertisements. See LSAs
> link-state metrics, IS-IS 1, 2
> link-state packets. See LSPs, IS-IS
> liveness detection
>   RIP and BFD
> local routing table
> log-adjacency-changes command
> logical addresses
> LSAs (link-state advertisements)
>   opaque LSAs
>   retransmit interval and transmit delay 1, 2
> LSDB (link-state database)
> lsp-gen-interval command
> lsp-mtu command
> lsp-refresh-interval command
> LSPs (link-state packets), IS-IS
>   disregarding attach bit
>   ignoring errors
>   interval rate
>   MTU
>   overload bit
>   refresh interval 1, 2
>   retransmission interval
>   retransmission throttle interval
>   transmission interval

M

> MAC (media access control) addresses
>   and ARP
>   defined
> manuals
>   comments on
> match commands
>   match-set summary prefix-tree
> max-lsp-lifetime command
> max-response-failure command
> maximum transmission unit. See MTU
> maximum-paths command
>   IP 1, 2
>   IS-IS
>   OSPF
>   RIP
> MD5 authentication
>   enabling
>   IS-IS
>   OSPF 1, 2, 3
> mesh group, setting (IS-IS)
> message digests
> message-digest-key md5 command
> metric
>   IS-IS global default
>   IS-IS interface
>   OSPF default
>   setting
> metric commands
>   metric
> metric-style commands
>   metric-style narrow
>   metric-style transition
>   metric-style wide
> mpls commands
>   mpls spf-use-any-best-path (IS-IS)
>   mpls spf-use-any-best-path (OSPF)
>   mpls traffic-eng (IS-IS)
>   mpls traffic-eng area
>   mpls traffic-eng router-id
>   mpls traffic-eng router-id (IS-IS)
> MTU (maximum transmission unit)
>   IP 1, 2
>   IPv6
>   IS-IS
>   OSPF
> multicast
>   addressing
> multihomed hosts
> multinetting

N

> ND (neighbor discovery)
>   overview
> neighbor commands
>   neighbor
>     OSPF
>     RIP
> neighbor histories, OSPF
> neighbor uptime tracking, OSPF
> neighboring routers, OSPF 1, 2
> NET (network entity title) 1, 2, 3
> net command
> network area command
> network commands
>   network
> network entity title. See NET
> network interface layer (TCP/IP)
> network layer addresses
> network masks
> network service access point. See NSAP
> network, OSPF routing
> next-hop verification
>   configuring
>     example
>     steps for
>   overview
> no area command
> no ipv6 command
> nonbroadcast networks
> nonstop forwarding. See graceful restart, IS-IS
> not-so-stubby area, OSPF. See NSSA
> notice icons
> NSAP (network service access point) 1, 2
> NSF (nonstop forwarding). See graceful restart, IS-IS
> nsf commands
>   nsf ietf
>   nsf interface wait
>   nsf t1
>   nsf t2
>   nsf t3
> NSSA (not-so-stubby area), OSPF 1, 2
> null authentication, OSPF
> null interfaces
>   as next-hop points for static routes
>     discarding received IPv6 packets
>   data sink
>     created by default, uneditable configuration
>   packets reaching and being discarded
>     not sending ICMP unreachables to the originator
>     not sending ICMPv6 unreachables to the originator
>     sending ICMP unreachables to the originator
>     sending ICMPv6 unreachables to the originator

O

> opaque LSAs, OSPF
> Open Shortest Path First. See OSPF
> operations-per-hop command
> OSPF (Open Shortest Path First)
>   ABRs
>   adjacency
>   aggregate cost, optimizing
>   areas 1, 2, 3
>   areas, defining
>   AS boundary router
>   authentication
>     MD5
>     simple password 1, 2
>   autocost
>   automatic virtual links
>   backbone area
>   BGP and
>   BGP/MPLS VPNs and
>   configuring
>     areas
>     authentication
>     incremental SPF
>     interfaces
>     NBMA networks
>     remote neighbors
>     traps
>   creating interfaces
>   database
>   dead interval
>   default cost
>   deleting interfaces 1, 2
>   domain
>   ECMP
>   enabling
>   interaction with BGP/MPLS VPNs
>   link-local states
>   MD5 authentication
>   metrics, default
>   MIB
>   monitoring
>   neighbor histories
>   neighbor uptime tracking
>   optimizing aggregate costs
>   password authentication, simple 1, 2
>   route leakage
>   routes, using for multicast RPF checks
>   routing costs
>   routing priority
>   SPF hold time interval
>   stub area
>   topology elements
>   traffic engineering
>   transmit delay 1, 2
>   troubleshooting
>   virtual links
> ospf commands See also show ip ospf commands; show ipv6 ospf commands
>   log-adjacency-changes
>   ospf auto-cost reference-bandwidth
>   ospf enable 1, 2
>   ospf log-adjacency-changes
>   ospf shutdown
> overload bit, IS-IS
> owner command

P

> packet-switching networks
> packets, IP
>   broadcast packets
>   echo request and trace packets
>   ICMP messages and
>   IPv6 echo request and trace
> parallel routes, maximum number of
>   IP 1, 2
>   IS-IS
>   OSPF
>   RIP
> partial sequence number PDU. See PSNP
> passive-interface command 1, 2, 3
> passwords
>   IS-IS area authentication
>   IS-IS authentication
>   IS-IS domain authentication
>   OSPF MD5 authentication
>   OSPF simple password authentication 1, 2
> PDU (protocol data unit)
> physical addresses
> ping command 1, 2
> ping packets
>   arriving at null 0 interface static routes
>     sending of ICMPv4 unreachables to the originator disabled
>     sending of ICMPv4 unreachables to the originator enabled
>     sending of ICMPv6 unreachables to the originator disabled
>     sending of ICMPv6 unreachables to the originator enabled
>   ICMP-based and UDP-based
>     arriving at null 0 static routes
>     destined for non-existent hosts
>     reaching null 0 interfaces and black holed
> point-to-point circuits, IS-IS
> Point-to-Point Protocol. See PPP
> point-to-point-over-LAN circuits, IS-IS
> PPP (Point-to-Point Protocol)
>   host access routes
> primary IP addresses
> primary IP interface
> priority
>   IS-IS designated router
>   OSPF routing 1, 2
> profile commands
>   profile 1, 2, 3
> profiles
>   assigning
>   creating 1, 2
> protocol data unit. See PDU
> protocol number
> PSNP (partial sequence number PDU)

R

> reachability commands
>   IP
> reassembling IP datagrams
> receive version command
> receive-interface command 1, 2
> receiving interface, setting for RTR probes
> redirects, IP
> redistribute command
>   IS-IS
>   OSPF 1, 2
>   RIP
> redistribute isis ip command 1, 2
> redistributing routes between IS-IS levels
> redistribution policy (IP), monitoring 1, 2, 3
> redistribution routes
>   clearing all (IS-IS)
>   clearing all (OSPF)
>   disabling dynamic (IS-IS)
>   disabling dynamic (OSPF)
>   disabling dynamic (RIP)
>   setting 1, 2, 3
> reference-bandwidth command
> refresh interval, LSP (IS-IS) 1, 2
> reliable protocols 1, 2
> remote neighbors
>   OSPF
>   RIP
> remote-neighbor command 1, 2
> request messages, RIP
> request-data-size command
> response messages, RIP
> Response Time Reporter. See RTR
> restart, graceful. See graceful restart, IS-IS
> retransmission interval, IS-IS
> retransmission throttle interval, IS-IS
> retransmit interval
>   and transmit delay 1, 2
>   OSPF 1, 2
> retransmit-interval command
> RIB (routing information base]
> RIP (Routing Information Protocol)
>   authentication
>   BFD liveness detection and
>   configuring
>   debounce interval
>   detecting path failures
>   disabling dynamic route distribution
>   ECMP
>   maximum number of parallel routes
>   message types
>   monitoring
>   purging learned routes
>   purging the routing table
>   remote neighbors
>   request messages
>   response messages
>   route specificity
>   route tags
>   split horizon mechanism
>   subnet masks
>   summarizing routes
>   triggered updates, disabling
>   troubleshooting
>   using routes for multicast RPF checks
> route leakage, OSPF
> route leaking between IS-IS levels
> route maps
>   and IS-IS route tags
>   IP, monitoring
> route tags, IS-IS
>   and route maps
>   configuring
>   defined
>   for default routes
>   for IS-IS interfaces
>   for passive interfaces 1, 2
>   for redistribution
>   for summary routes
>   monitoring
>   overview
>   unsupported features
>   using
> route tags, RIP
> route-map command 1, 2, 3
> router commands
>   router isis
>   router ospf 1, 2, 3, 4
>   router rip 1, 2
> router IDs 1, 2
> router type, IS-IS
> routes
>   summarizing IS-IS
>   summarizing RIP
>   using IS-IS
>   using OSPF
>   using RIP
> routing information base. See RIB
> Routing Information Protocol. See RIP
> routing table
>   entry
>   global IP
>   local
> routing, IP See also IP
>   adding host route to peer on PPP interface
>   default routes
>   disabling forwarding of packets
>   identifying a router
>   maximum number of parallel routes 1, 2
>   monitoring 1, 2, 3, 4
>   next-hop verification
>   routing operations
>   routing tables
>   source address validation 1, 2
>   static routes 1, 2
> routing, IPv6 See also IPv6
>   hop limit
>   monitoring 1, 2, 3
>   source address validation
>   static routes
> routing, IS-IS See also IS-IS
>   clearing redistribution information
>   default route and routing domain
>   designated routers
>   integrated
>   layers/levels of 1, 2, 3
>   maximum number of parallel routes
>   OSPF routing with
>   route summarization
>   routing domains
>   setting redistribution routes
>   specifying type (level)
> routing, OSPF See also OSPF
>   area
>   clearing redistribution information
>   cost
>     autocost
>     default routing cost
>     equal-cost multipath
>   default route and routing domain
>   displaying information about
>   intra-area, interarea, external routes
>   leakage
>   maximum number of parallel routes
>   network
>   priority 1, 2
> routing, RIP See also RIP
>   debounce interval
>   maximum number of parallel routes
>   purging the routing table
>   route specificity
>   triggered updates, disabling
> RTR (Response Time Reporter)
>   collecting history
>   collecting statistics
>   configuring
>   monitoring
>   next-hop verification
>   options
>   probe
>     configuring
>     scheduling
>     shutting down
>   reaction conditions
>   setting receiving interface
> rtr commands See also show rtr commands
>   rtr
>   rtr reaction-configuration action-type
>   rtr reaction-configuration operation-failure
>   rtr reaction-configuration path-change
>   rtr reaction-configuration test-completion 1, 2
>   rtr reaction-configuration test-failure
>   rtr reset
>   rtr schedule
>   rtr schedule life
>   rtr schedule restart-time
>   rtr schedule start-time

S

> samples-of-history-kept command
> secondary IP addresses
> send version command
> send-more-specific-routes-disable command
> set-overload-bit command
> setting
>   administrative distance
>   metric
> shared IP interfaces
>   configuring
>   primary interface
>   shared interface
> shared IPv6 interfaces
>   configuring
>   shared interface
> show access-list command
> show arp command
> show clns commands
>   show clns
>   show clns interface
>   show clns neighbors
>   show clns protocol
>   show clns traffic
> show forwarding-table route-holddown
> show hosts command
> show ip commands
>   show ip
>   show ip address
>   show ip as-path-access-list
>   show ip community-list
>   show ip forwarding-table 1, 2
>   show ip interface
>   show ip interface shares
>   show ip protocols
>   show ip redistribute 1, 2
>   show ip route
>   show ip route slot
>   show ip socket statistics
>   show ip static
>   show ip tcp statistics
>   show ip udp statistics
> show ip ospf commands
>   show ip ospf
>   show ip ospf border-routers
>   show ip ospf database
>   show ip ospf database link-local
>   show ip ospf database opaque-area
>   show ip ospf interface
>   show ip ospf internal-statistics
>   show ip ospf neighbors
>   show ip ospf remote-neighbor interface
>   show ip ospf spf-log
>   show ip ospf traffic
>   show ip ospf virtual-links
> show ip rip commands
>   show ip rip
>   show ip rip brief
>   show ip rip database
>   show ip rip network
>   show ip rip stats
>   show ip rip summary-address
> show ipv6 commands
>   show ipv6
>   show ipv6 address
>   show ipv6 local pool
>   show ipv6 neighbors
>   show ipv6 protocols
>   show ipv6 route
>   show ipv6 routers
>   show ipv6 static
>   show ipv6 traffic
>   show ipv6 udp statistics
>   show license ipv6
> show ipv6 ospf commands
>   show ipv6 ospf
>   show ipv6 ospf database
>   show ipv6 ospf interface
>   show ipv6 ospf internal-statistics
>   show ipv6 ospf neighbors
>   show ipv6 ospf summary-prefix
> show isis commands
>   show isis database
>   show isis mpls adjacency-log
>   show isis mpls advertisements
>   show isis mpls tunnel
>   show isis nsf
>   show isis spf-log
>   show isis summary-addresses
>   show isis topology
> show profile commands
>   show ip profile
>   show ipv6 profile
>   show profile brief
> show route-map command
> show rtr commands
>   show rtr application
>   show rtr collection-statistics
>   show rtr configuration
>   show rtr history
>   show rtr hops
>   show rtr operational-state
> show tcp commands
>   show tcp ack-rst-and-syn
>   show tcp path-mtu-discovery
>   show tcp paws
>   show tcp resequence-buffers
>   show tcp statistics
> simple password authentication, OSPF 1, 2
> snmp commands
>   snmp trap ip link-status
> source address validation traps
> source address verification 1, 2, 3
> SPF (shortest path first) calculations
>   IS-IS
> SPF hold time
>   interval
>   IS-IS
> SPF, incremental
> spf-interval command
> split horizon mechanism
> split-horizon command
> SRP modules
>   global IP routing table on
> starting IS-IS MD5 packets
> static routes
>   establishing
>   monitoring
>   on null 0 interfaces
>     creating an exception to the SRP module 1, 2
>     disabling the sending of ICMP unreachables
>     disabling the sending of ICMPv6 unreachables
>     discarding IPv4 packets at the forwarding plane
>     discarding IPv6 packets at the forwarding plane
>     discarding received packets and not sending ICMP unreachables
>     discarding received packets and not sending ICMPv6 unreachables
>     discarding received packets and sending ICMP unreachables
>     discarding received packets and sending ICMPv6 unreachables
>     dropping of received IPv4 packets
>     dropping of received IPv6 packets
>     enabling the sending of ICMP unreachables
>     enabling the sending of ICMPv6 unreachables
>   verifying next hops for
> stopping IS-IS MD5 packets
> stub areas, OSPF 1, 2
> subnet addressing
> summarizing RIP routes
> summary addresses
>   IS-IS routing
>   OSPF routing 1, 2
> summary-address command 1, 2
> summary-prefix command 1, 2
> supernets
> support, technical See technical support
> suppress-default command
> suppressing IS-IS default routes
> system identifier, IS-IS

T

> table
>   forwarding
>   global IP routing
>   local routing
> table maps, IS-IS
>   configuring
>   defined
>   overview
> table-map command
>   IS-IS
>   OSPF
>   RIP
> tag command
> TCP commands
>   tcp ack-rst-syn 1, 2
>   tcp mss 1, 2
>   tcp path-mtu-discovery 1, 2
>   tcp path-mtu-discovery black-hole-detect-threshold 1, 2
>   tcp path-mtu-discovery max-mtu 1, 2
>   tcp path-mtu-discovery min-mtu 1, 2
>   tcp paws-disable 1, 2
>   tcp resequence-buffers connection-maximum 1, 2
>   tcp resequence-buffers default-connection-maximum 1, 2
>   tcp resequence-buffers default-vr-maximum 1, 2
>   tcp resequence-buffers global-maximum 1, 2
>   tcp resequence-buffers vr-maximum 1, 2
> TCP/IP protocol suite
>   defined
>   layers of
> technical support
>   contacting JTAC
> text and syntax conventions
> time-to-live command
> timeout command
> timers
>   IS-IS graceful restart 1, 2
>   RIP
> timers commands
>   timers
>   timers spf
> TLV (type-length-value) for resolution of IS-IS dynamic hostname
> topology
>   IS-IS
>   OSPF
> tos command
> trace packets 1, 2
> traceroute command 1, 2, 3, 4
> traceroute packets
>   arriving at null 0 interface static routes
>     sending of ICMPv4 unreachables to the originator disabled
>     sending of ICMPv4 unreachables to the originator enabled
>     sending of ICMPv6 unreachables to the originator disabled
>     sending of ICMPv6 unreachables to the originator enabled
>   ICMP-based and UDP-based
>     arriving at null 0 static routes
>     reaching null 0 interfaces and black holed
> traffic engineering
>   and IS-IS
>   and OSPF
> traffic, IP
> transmit delay, OSPF 1, 2
> transmit-delay command
> transport layer (TCP/IP)
> traps command
> traps, OSPF
> triggered-update-disable command
> troubleshooting
>   dropped packets
>   IS-IS
>   OSPF
>   RIP
> ttl command
> type command
> type-length-value for resolution of IS-IS dynamic hostname

U

> UDP (User Datagram Protocol)
> undebug commands
>   undebug ip ospf
>   undebug ip rip
>   undebug ipv6 ospf
>   undebug isis
> unnumbered interface
>   IP
>   IPv6
> unreachable messages (ICMP)
> unreliable protocols 1, 2, 3
> update-source command 1, 2
> User Datagram Protocol. See UDP

V

> validating source addresses 1, 2, 3
> verifying next hops for static routes
> virtual links, OSPF 1, 2, 3
> virtual-router command