RE: switch configuration

From: Rajib Khan (rajib56666@yahoo.com)
Date: Thu Nov 24 2005 - 18:42:20 GMT-3


  HI everyone,
   
  As per recommendation,I have configured sw1 as root bridge for vlan 22,23 and sw2 for 32,33 but unfortunately still no joy.
   
  Any more thought on this
   
  Following is configuration
   
   switch1
   
   
  Switch1#sh spanning-tree vlan 22
   
  VLAN0022
    Spanning tree enabled protocol ieee
    Root ID Priority 32790
               Address 000d.6573.4880
               This bridge is the root
               Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
   
    Bridge ID Priority 32790 (priority 32768 sys-id-ext 22)
               Address 000d.6573.4880
               Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
               Aging Time 300
   
  Interface Role Sts Cost Prio.Nbr Type
  ---------------- ---- --- --------- -------- --------------------------------
  Fa0/23 Desg FWD 19 128.23 P2p
  Fa0/24 Desg FWD 19 128.24 P2p
   
  Switch1#sh spanning-tree vlan 23
   
  VLAN0023
    Spanning tree enabled protocol ieee
    Root ID Priority 32791
               Address 000d.6573.4880
               This bridge is the root
               Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
   
    Bridge ID Priority 32791 (priority 32768 sys-id-ext 23)
               Address 000d.6573.4880
               Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
               Aging Time 300
   
  Interface Role Sts Cost Prio.Nbr Type
  ---------------- ---- --- --------- -------- --------------------------------
  Fa0/23 Desg FWD 19 128.23 P2p
  Fa0/24 Desg FWD 19 128.24 P2p
   
  Switch1#sh spanning-tree int f0/24
   
  Vlan Role Sts Cost Prio.Nbr Type
  ---------------- ---- --- --------- -------- --------------------------------
  VLAN0022 Desg FWD 19 128.24 P2p
  VLAN0023 Desg FWD 19 128.24 P2p
  VLAN0032 Altn BLK 19 128.24 P2p
  VLAN0033 Altn BLK 19 128.24 P2p
  Switch1#sh spanning-tree int f0/23
   
  Vlan Role Sts Cost Prio.Nbr Type
  ---------------- ---- --- --------- -------- --------------------------------
  VLAN0022 Desg FWD 19 128.23 P2p
  VLAN0023 Desg FWD 19 128.23 P2p
  VLAN0032 Root FWD 19 128.23 P2p
  VLAN0033 Root FWD 19 128.23 P2p
  Switch1#
   
   
   
   
  Switch2
   
  Switch2#sh spanning-tree vlan 32
   
  VLAN0032
    Spanning tree enabled protocol ieee
    Root ID Priority 24608
               Address 000f.3420.ed80
               This bridge is the root
               Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
   
    Bridge ID Priority 24608 (priority 24576 sys-id-ext 32)
               Address 000f.3420.ed80
               Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
               Aging Time 300
   
  Interface Role Sts Cost Prio.Nbr Type
  ---------------- ---- --- --------- -------- --------------------------------
  Fa0/23 Desg FWD 19 128.23 P2p
  Fa0/24 Desg FWD 19 128.24 P2p
   
  Switch2#sh spanning-tree vlan 33
   
  VLAN0033
    Spanning tree enabled protocol ieee
    Root ID Priority 24609
               Address 000f.3420.ed80
               This bridge is the root
               Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
   
    Bridge ID Priority 24609 (priority 24576 sys-id-ext 33)
               Address 000f.3420.ed80
               Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
               Aging Time 300
   
  Interface Role Sts Cost Prio.Nbr Type
  ---------------- ---- --- --------- -------- --------------------------------
  Fa0/23 Desg FWD 19 128.23 P2p
  Fa0/24 Desg FWD 19 128.24 P2p
   
  Switch2#
   
   
  Switch2#sh spanning-tree int f0/23
   
  Vlan Role Sts Cost Prio.Nbr Type
  ---------------- ---- --- --------- -------- --------------------------------
  VLAN0022 Root FWD 19 128.23 P2p
  VLAN0023 Root FWD 19 128.23 P2p
  VLAN0032 Desg FWD 19 128.23 P2p
  VLAN0033 Desg FWD 19 128.23 P2p
  Switch2#sh spanning-tree int f0/24
   
  Vlan Role Sts Cost Prio.Nbr Type
  ---------------- ---- --- --------- -------- --------------------------------
  VLAN0022 Altn BLK 19 128.24 P2p
  VLAN0023 Altn BLK 19 128.24 P2p
  VLAN0032 Desg FWD 19 128.24 P2p
  VLAN0033 Desg FWD 19 128.24 P2p
  Switch2#
   
   
  Thanks
   
  Raj
   

"Larry Letterman (lletterm)" <lletterm@cisco.com> wrote: Spanning tree root primary and secondary

Larry Letterman
INS-NW-WEST
Cisco Systems

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Kulcsar Andras Benjamin
Sent: Thursday, November 24, 2005 9:44 AM
To: Rajib Khan; ccielab@groupstudy.com
Subject: RE: switch configuration

Yes, configure bridge priority

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Rajib Khan
Sent: Thursday, November 24, 2005 4:33 PM
To: ccielab@groupstudy.com
Subject: switch configuration

Hi Group

Could any one please help me with the followings

SW1 ------------ SW2

There are 2 trunk port between sw1 and sw2, I want to send vlan 22,23 via one link and 32,33 other link but if one link fails then other link should forward all vlans. Is there any way can you achieve this with out using port priority and port cost

Thanks in advance

Raj

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