Cisco 3560G 48TS Software Configuration Guide - Page 761

Chapter 33 Configuring MSDP Configuring MSDP Step 3 Step 4 Step 5 Step 6 Command Purpose access-list access-list-number {deny | (Optional) Create an IP extended access list, repeating the command as permit} protocol source source-wildcard many times as necessary. destination destination-wildcard • For access-list-number, enter the number specified in Step 2. • The deny keyword denies access if the conditions are matched. The permit keyword permits access if the conditions are matched. • For protocol, enter ip as the protocol name. • For source, enter the number of the network or host from which the packet is being sent. • For source-wildcard, enter the wildcard bits in dotted decimal notation to be applied to the source. Place ones in the bit positions that you want to ignore. • For destination, enter the number of the network or host to which the packet is being sent. • For destination-wildcard, enter the wildcard bits in dotted decimal notation to be applied to the destination. Place ones in the bit positions that you want to ignore. Recall that the access list is always terminated by an implicit deny statement for everything. end Return to privileged EXEC mode. show running-config Verify your entries. copy running-config startup-config (Optional) Save your entries in the configuration file. To remove the filter, use the no ip msdp sa-filter out {ip-address | name} [list access-list-number] [route-map map-tag] global configuration command. This example shows how to allow only (S,G) pairs that pass access list 100 to be forwarded in an SA message to the peer named switch.cisco.com: Switch(config)# ip msdp peer switch.cisco.com connect-source gigabitethernet0/1 Switch(config)# ip msdp sa-filter out switch.cisco.com list 100 Switch(config)# access-list 100 permit ip 171.69.0.0 0.0.255.255 224.20 0 0.0.255.255 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 33-13