[c-nsp] ATM soft-vc path selection

Clayton Zekelman clayton at mnsi.net
Sat Jan 13 22:01:26 EST 2007



I have a network of LS1010 switches, and recently added a second DS3 link between 2 nodes.

I'm using PNNI between the 2 switches, and am trying to get the soft vc's to utilize both DS3's.

SwitchA# show atm pnni neigh

Neighbors For Node (Index 1, Level 56)

  Neighbor Name: SwitchB, Node number: 12
  Neighbor Node Id: 56:160:47.009181000000003085A72F01.003085A72F01.00
  Neighboring Peer State: Full
  Link Selection For CBR    : minimize blocking of future calls
  Link Selection For VBR-RT : minimize blocking of future calls
  Link Selection For VBR-NRT: minimize blocking of future calls
  Link Selection For ABR    : balance load
  Link Selection For UBR    : balance load
   Port                      Remote Port Id            Hello state
   ATM0/0/3                  ATM0/0/0                  2way_in
   ATM0/0/0                  ATM0/0/3                  2way_in  (Flood Port)
                                                                  

SwitchB# show atm pnni neigh

Neighbors For Node (Index 1, Level 56)

  Neighbor Name: SwitchA, Node number: 10
  Neighbor Node Id: 56:160:47.00918100000000308563C401.00308563C401.00
  Neighboring Peer State: Full
  Link Selection For CBR    : minimize blocking of future calls
  Link Selection For VBR-RT : minimize blocking of future calls
  Link Selection For VBR-NRT: minimize blocking of future calls
  Link Selection For ABR    : balance load
  Link Selection For UBR    : balance load
   Port                      Remote Port Id            Hello state
   ATM0/0/0                  ATM0/0/3                  2way_in
   ATM0/0/3                  ATM0/0/0                  2way_in  (Flood Port)   

The 2 switches see eachother through both links, but for some reason SVC calls initiated from SwitchA only go out through ATM0/0/0 to SwitchB.

SwitchB connects further down the line to another switch (SwitchC), then terminates on a port facing a router.


I place the calls from SwitchA with:

interface ATM0/0/2
atm soft-vc 1 32 dest-address 47.0091.8100.0000.00d0.ba70.5401.4000.0c82.1000.00 2 32 rx-cttr 1 tx-cttr 1  
          
Any suggestions? 

Thanks!


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