
Chapter 29
| IP Routing Commands
Border Gateway Protocol (BGPv4)
– 939 –
Command Usage
◆
This command sets the interval at which to check the validity of the next hop
for all routes in the routing information database. During the interval between
scan cycles, IGP instability or other network problems may cause black holes or
routing loops to form.
Example
Console(config-router)#bgp scan-time 30
Console(config-router)#
network
This command specifies a network to advertise. Use the
no
form to stop advertising
a network.
Syntax
network
ip-address
[
netmask
] [
route-map
map-name
| [
backdoor
]
pathlimit
ttl
]
no network
ip-address
[
netmask
]
ip-address
– IP address of a to advertise.
netmask
– Network mask for the route. This mask identifies the network
address bits used for the associated routing entries.
map-name
– Name of the route map. The route map can be used to filter
the networks to advertise. (Range: 1-80 characters)
backdoor
– Specifies a backdoor route to a BGP border router that
provides better information about the network.
pathlimit
ttl
– Maximum number of hops allowed in an AS path.
(Range: 0-255)
Command Mode
Router Configuration
Default Setting
No networks are configured.
Command Usage
◆
Use this command to specify the networks to advertise to BGP neighbors. BGP
networks can be learned from directly connected routes, dynamic routing, or
static route sources.
◆
BGP only sends and receives updates on interfaces specified by this command.
If a network is not specified, the interfaces in that network will not be
advertised in any BGP updates.
◆
A backdoor network has an administrative distance of 200, making routes
learned through interior gateway protocols (RIP, OSPF, iBGP) preferred. A
Summary of Contents for AS5700-54X
Page 42: ...Contents 42...
Page 44: ...Figures 44...
Page 52: ...Tables 52...
Page 54: ...Section I Getting Started 54...
Page 80: ...Chapter 1 Initial Switch Configuration Setting the System Clock 80...
Page 210: ...Chapter 6 Remote Monitoring Commands 210...
Page 358: ...Chapter 9 Access Control Lists ACL Information 358...
Page 418: ...Chapter 12 Port Mirroring Commands RSPAN Mirroring Commands 418...
Page 436: ...Chapter 15 UniDirectional Link Detection Commands 436...
Page 442: ...Chapter 16 Address Table Commands 442...
Page 506: ...Chapter 18 VLAN Commands Configuring VXLAN Tunneling 506...
Page 526: ...Chapter 19 Class of Service Commands Priority Commands Layer 3 and 4 526...
Page 544: ...Chapter 20 Quality of Service Commands 544...
Page 652: ...Chapter 22 Multicast Filtering Commands MLD Proxy Routing 652...
Page 680: ...Chapter 23 LLDP Commands 680...
Page 722: ...Chapter 24 CFM Commands Delay Measure Operations 722...
Page 732: ...Chapter 25 Domain Name Service Commands 732...
Page 790: ...Chapter 27 IP Interface Commands ND Snooping 790...
Page 1072: ...Section III Appendices 1072...
Page 1102: ...List of CLI Commands 1102...
Page 1115: ......
Page 1116: ...AS5700 54X AS6700 32X E032016 ST R02 149100000198A...