Foundry Configuration Guide for the FESX, FSX, and FWSX
C - 10
© Foundry Networks, Inc.
December 2005
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RIP neighbor filters
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BGP route address filters
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BGP route AS-path filters
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BGP route community filters
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RIP redistribution filters
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OSPF redistribution filters
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BGP redistribution filters
IP Filters
IP filters control the IP packets that the Foundry device sends and receives and the routes that the device learns
or advertises. IP forwarding filters (IP Access policies) control transmission and receipt of IP packets, while RIP
route and neighbor filters control the routes that the device learns or advertises. Route filters filter on specific
network addresses while neighbor filters filter on the IP addresses of the RIP neighbors.
IP Forwarding Filters
IP forwarding filters determine whether to forward or drop an IP packet. IP forwarding filters on a Foundry Layer 2
Switch or Layer 3 Switch are called “IP access policies”. See “IP Access Policies” on page B-10.
RIP Route Filters
RIP route filters control the routes that a Foundry device learns and advertises. Figure B.7 shows an example of a
port with RIP route filters. The port has filters for the inbound direction and the outbound direction. Notice that the
same filter can be used for both directions. The inbound filters control the routes that the device learns; denied
routes are not learned by the device. Outbound filters control the routes that the device advertises; denied routes
are not advertised to RIP neighbors.
Figure C.2
RIP route filters
Actions
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A RIP route filter applied to outbound traffic on a port permits or denies advertisement of routes.
Inbound IP/RIP Route Filter Group for Port 4/1
FilterID Action Source
--------------------------------------------------------
2 Deny 192.164.21.0/24
1024 Permit any
Neighbor
RIP Router
192.164.28.0/24
192.164.21.0/24
209.157.22.0/24
209.241.12.0/24
Outbound IP/RIP Route Filter Group for Port 4/1
FilterID Action Source
--------------------------------------------------------
1 Deny 209.157.22.0/24
1024 Permit any
209.241.12.0/24
209.157.22.0/24
192.164.21.0/24
192.164.28.0/24
X
X
Foundry Device
Содержание FastIron Edge Switch X424
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