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fallback bridging briefly...

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Created on: Apr 29, 2012 9:39 AM by arteq - Last Modified:  Apr 29, 2012 9:39 AM by arteq

fallback bridging...

i suspect that there shouldn't be a mention of this for ccnp certification, since most indications that i'm seeing have it at ccie, even if there...  but the idea is interesting...

 

this is simple enough... create a bridge group for legacy non-routable protocols to pass between  svi's or l3 interfaces, such as decnet...  (is that even out there anymore?)

 

dls1(config)#bridge 1 protocol vlan-bridge

dls1(config)#

 

that statement turns it on, then configure svi's (int vlan x) into a bridge group, say 1...

 

dls1(config)#int vlan 10

dls1(config-if)#bridge-group 1

dls1(config-if)#end

dls1#sh bridge

Br Group    Mac Address       State      Type        Ports

--------    -----------       -----      ----        -----

   1        0009.b73f.ce87    Forward    DYNAMIC     Vl10 Po1

dls1#

 

 

this is very exciting...  chances are you'll never need it nowadays... however, i was alarmed when i read that 3550's might treat ipv6 as a non-routable protocol (read, not ipv4) in older versions of ios...

 

but no, arteq, you say, this simply cannot be...

 

dls1#sh ipv6 proto

 

dls1#

 

 

 

 

good Lord...

 

dls1(config)#ipv6 unicast-routing

dls1(config)#do sh ipv6 proto

IPv6 Routing Protocol is "connected"

dls1(config)#

 

good 3550...

 

http://insearchofthecert.blogspot.com/

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