Riverbed SteelHead 3070-SD, Руководство пользователя

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46 | Configuring BGP, OSPF, Static Routing, and Route Retraction on SteelHead SD
Configuring BGP on SteelHead SD
10. Router ID - The path that originates from the BGP router with the lowest router ID is preferred. The
router ID can be set manually and refers to the IP address with the highest router value. The router
ID is the final tiebreaker in the BGP route selection process if there are multiple identical prefixes
learned in the RIB. Typically, a tie break is found before the router ID but it is guaranteed to be
different since two routers cannot have the same IP address within the same routing domain.
SteelConnect doesn’t support VRF so everything is in the same routing domain and the system
doesn’t overlap or duplicate addresses.
Configuring BGP inbound and outbound prefixes
Outbound fields are disabled if a cluster site is selected as a transit hub for SteelHead SD 570-SD, 770-
SD, and 3070-SD appliances. For details on configuring transit hubs, see the
SteelConnect Manager User
Guide .
To configure inbound and outbound BGP route settings
1. Choose Appliances and select the appliance to expand the pane.
2. Select the BGP tab.
Figure 7-2. Configuring inbound and outbound settings
3. Under Inbound, fill out these attributes:
– Prefix list - Specify the prefixes to be allowed or denied for route advertisements from the BGP
neighbor to the appliance.
– AS list - Specify the AS paths. The route from the neighbor is permitted if the AS path matches
the regular expression in the AS path list.
– Routemap - Specify route policy for the BGP neighbor. The routing policies defined by the
selected route map are applied while accepting routes from the BGP neighbor.
4. Under outbound, fill out these attributes:
– Prefix list - Specify the prefixes to be allowed or denied for route advertisements to the BGP
neighbor from the appliance.
– AS list - Specify the AS paths. The route to the neighbor is permitted if the AS path matches the
regular expression in the AS path list.
– Routemap - Specify the route policy for the BGP neighbor. The routing policies defined by the
selected route map are applied while accepting routes to the BGP neighbor.