Edge-Core AS5700-54X, Справочное руководство CLI, Страница: 948 / 1116

Chapter 29
| IP Routing Commands
Border Gateway Protocol (BGPv4)
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The router immediately groups and sorts all local paths when this command is
entered. For correct results, deterministic comparison of the MED must be
configured in the same manner (enabled or disabled) on all routers in the local
AS.
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If deterministic comparison of the MED is not enabled, route selection can be
affected by the order in which routes are received.
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This command compares the MED when choosing routes advertised by
different peers in the same AS. To compare the MED when choosing routes
from neighbors in different ASs, use the
bgp always-compare-med command.
Example
Console(config-router)#bgp deterministic-med
Console(config-router)#
distance
This command sets the administrative distance for a specified external BGP (eBGP)
routes. Use the
no form to restore the default setting.
Syntax
distance distance ip-address netmask [ access-list-name ]
no distance ip-address netmask
distance – Administrative distance for an eBGP route. (Range: 1-255)
ip-address – IP address of a route entry.
netmask – Network mask for the route. This mask identifies the network
address bits used for the associated routing entries.
access-list-name – Name of standard or extended access list.
(Maximum length: 16 characters, no spaces or other special characters)
Command Mode
Router Configuration
Default Setting
None
Command Usage
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The route distance indicates the trustworthiness of a router. The higher the
distance the lower the trust rating. A distance of 255 means that the routing
source cannot be trusted and should be ignored.
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This distance set by this command only applies to external BGP paths routes
learned from a neighbor outside of the AS. Use the
distance bgp command to
configure the global setting for the distance of eBGP, iBGP, and local routes.