redistribute ospf process-id [match external {1 | 2} | match internal]
[metric-type {external | internal}] [route-map map-name]
Configure the following parameters:
–process-id: the range is from 1 to 65535.
–match external: the range is from 1 or 2.
–match internal
–metric-type: external or internal.
–map-name: name of a configured route map.
Enabling Additional Paths
The add-path feature is disabled by default.
NOTE: Dell Networking recommends not using multipath and add path simultaneously in a route
reflector.
To allow multiple paths sent to peers, use the following commands.
1. Allow the advertisement of multiple paths for the same address prefix without the new paths
replacing any previous ones.
CONFIG-ROUTER-BGP mode
bgp add-path {send | both} path-count count bgp add-path receive
The range is from 2 to 64.
2. Allow the specified neighbor/peer group to send/ receive multiple path advertisements.
CONFIG-ROUTER-BGP mode
neighbor {ipaddress| peergroup name} add-path [send | receive| both] path-
count count
NOTE: The path-count parameter controls the number of paths that are advertised, not the
number of paths that are received.
Configuring IP Community Lists
Mmultiple methods of manipulating routing attributes are supported in the Dell Networking OS.
One attribute you can manipulate is the COMMUNITY attribute. This attribute is an optional attribute that
is defined for a group of destinations. You can assign a COMMUNITY attribute to BGP routers by using an
IP community list. After you create an IP community list, you can apply routing decisions to all routers
meeting the criteria in the IP community list.
IETF RFC 1997 defines the COMMUNITY attribute and the predefined communities of INTERNET,
NO_EXPORT_SUBCONFED, NO_ADVERTISE, and NO_EXPORT. All BGP routes belong to the INTERNET
community. In the RFC, the other communities are defined as follows:
• All routes with the NO_EXPORT_SUBCONFED (0xFFFFFF03) community attribute are not sent to
CONFED-EBGP or EBGP peers, but are sent to IBGP peers within CONFED-SUB-AS.
• All routes with the NO_ADVERTISE (0xFFFFFF02) community attribute must not be advertised.
• All routes with the NO_EXPORT (0xFFFFFF01) community attribute must not be advertised outside a
BGP confederation boundary, but are sent to CONFED-EBGP and IBGP peers.
Border Gateway Protocol IPv4 (BGPv4) 185