Fundamentals of BGP Operations - Foundation Summary - BGP command reference

19 important questions on Fundamentals of BGP Operations - Foundation Summary - BGP command reference

What is the command mode and desciption of address-family vpnv4?

BGP mode; allows the creation of the MP-BGP session necessary to form the
VPNv4 session between PE devices
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What is the command mode and desciption of aggregate-address address mask [ as-set ]
[ summary-only ] [ suppress-map map-name ]
[ advertise-map map-name ] [ attribute-map
map-name ]?

BGP mode; summarizes BGP routes, suppressing all/none/some of the component subnets
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What is the command mode and desciption of auto-summary ?

BGP mode; enables automatic summarization to classful boundaries of locally injected routes
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What is the command mode and desciption of bgp cluster-id cluster-id?

BGP mode; defines a nondefault RR cluster ID to an RR server
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What is the command mode and description of bgp confederation identifier as-number?

BGP mode; for confederations, defines the ASN used for the entire AS as seen by other autonomous systems
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What is the command mode and desciption of bgp confederation peers as-number [ ... as-number ] ?

BGP mode; for confederations, identifies which neighboring ASNs are in other confederation subautonomous systems
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What is the command mode and desciption of  bgp log-neighbor-changes?

BGP mode; on by default, it tells BGP to create log messages for significant changes in BGP operation
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What is the command mode and desciption of default-metric number ?

BGP mode; sets the default metric assigned to routes redistributed into BGP; normally defaults to the IGP metric for each route
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What is the command mode and description of distance bgp external-distance internaldistance local-distance ?

BGP mode; defines the administrative distance for eBGP, iBGP, and locally injected BGP routes
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What is the command mode and desciption of neighbor { ip-address | peer-group-name } default-originate [ route-map map-name ]?

BGP mode; tells the router to add a default route to the BGP Update sent to this neighbor, under the conditions set in the optional route map
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What is the command mode and desciption of  neighbor { ip-address | peer-group-name } description text?

BGP mode; adds a descriptive text reference in the BGP configuration
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What is the command mode and desciption of neighbor { ip-address | peer-group-name }ebgp-multihop [ ttl ]

BGP mode; for eBGP peers, sets the TTL in packets sent to this peer to something larger than the default of 1
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What is the command mode and desciption of neighbor ip-address | peer-group-name next-hop-self?

BGP mode; causes IOS to reset the NEXT_HOP PA to the IP address used as the source address of Updates sent to this neighbor
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What is the command mode and desciption of
neighbor { ip-address | peer-group-name } password string

BGP mode; defines the key used in an MD5 hash of all BGP messages to this neighbor
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What is the command mode and desciption of
neighbor { ip-address | peer-group-name } shutdown

BGP mode; administratively shuts down a neighbor, stopping the TCP connection
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What is the command mode and desciption of
neighbor { ip-address | ipv6-address | peergroup-name } update-source interface-type interface-number

BGP mode; defines the source IP address used for BGP messages sent to this neighbor
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What is the command mode and desciption of
network { network-number [ mask networkmask] [ route-map map-tag ]

BGP mode; causes IOS to add the defined prefix to the BGP table if it exists in the IP routing table
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What is the command mode and desciption of
show ip bgp [ network ] [ network-mask ][ longer-prefixes ] [ prefix-list prefix-listname | route-map route-map-name ] [ shorter prefixes mask-length ]

Exec mode; lists details of a router’s BGP Table
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What is the command mode and desciption of

show ip bgp neighbors [ neighbor-address ] [ received-routes | routes | advertised-routes | { paths regexp } | dampened-routes | received
prefix-filter
]

Exec mode; lists information about routes
sent and received to particular neighbors
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