network cisco ccna gns3 certification arteq

network cisco ccna gns3 certification arteq
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Monday, December 24, 2012

sdm and ipv6...

very good article here:

one of the first things i did with my new gear was to light up ipv6... i thought nothing of it and used this command:

dlsw1(config)#sdm prefer dual                                                  
dlsw1(config)#sdm prefer dual-ipv4-and-ipv6 ?                                  
  default  Default bias                                                        
  routing  Unicast bias                                                        
  vlan     VLAN bias 

quite honestly, i chose default mostly because it sounded good... or maybe i was just a good dummy that day...

dlsw1#sh sdm prefer                                                               
 The current template is "desktop IPv4 and IPv6 default" 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:                  2K                            
  number of IPv4 IGMP groups + multicast routes:    1K                            
  number of IPv4 unicast routes:                    3K                            
  number of directly-connected IPv4 hosts:        2K                            
  number of indirect IPv4 routes:                 1K          
  number of IPv6 multicast groups:                  1.125k                        
  number of directly-connected IPv6 addresses:      2K                            
  number of indirect IPv6 unicast routes:           1K                            
  number of IPv4 policy based routing aces:         0                             
  number of IPv4/MAC qos aces:                      0.5K                          
  number of IPv4/MAC security aces:                 1K                            
  number of IPv6 policy based routing aces:         0                             
  number of IPv6 qos aces:                          0.625k                        
  number of IPv6 security aces:                     0.5K 

it requires a reboot to take effect...  the guy in the link chose vlan and that gave him no room for v4 unicast routing according to the article...


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