Cisco Policy-Based Routing

Switching Database Manager muss auf routing stehen

• show sdm prefer

 The current template is "desktop routing" template.
 The selected template optimizes the resources in
 the switch to support this level of features for
 8 routed interfaces and 1024 VLANs. 

  number of unicast mac addresses:                  3K
  number of IPv4 IGMP groups + multicast routes:    1K
  number of IPv4 unicast routes:                    11K
    number of directly-connected IPv4 hosts:        3K
    number of indirect IPv4 routes:                 8K
  number of IPv4 policy based routing aces:         0.5K
  number of IPv4/MAC qos aces:                      0.5K
  number of IPv4/MAC security aces:                 1K

Ändern des SDM und reload

• config terminal
  • sdm prefer routing
  • end
• reload

Acl mit Source Adressen anlegen

• ip access-list extended sources-to-nagus
  • permit ip host 192.168.240.44 any
  • end

Route map erstellen

• route-map over-nagus permit 10
  • match ip address sources-to-nagus
  • set ip next-hop 172.25.125.3
  • end

Anwenden auf das Incomming Interface

• interface Vlan1
  • ip policy route-map over-nagus
  • end

Links

• http://www.ciscozine.com/pbr-route-a-packet-based-on-source-ip-address/
• http://www.cisco.com/c/en/us/td/docs/ios/12_2/qos/configuration/guide/fqos_c/qcfpbr.html
• http://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/44921-swdatabase-3750ss-44921.html
• https://supportforums.cisco.com/t5/network-infrastructure-documents/dual-internet-links-nating-with-pbr-and-ip-sla/ta-p/3126275