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i have configured two HP 5406zl switches need suggestion...trunk goes to block state for 2920

shams2
Visitor

i have configured two HP 5406zl switches need suggestion...trunk goes to block state for 2920

i have configured two HP 5406zl switches need suggestion...trunk goes to block state for 2920

6 REPLIES
Michael Patmon
Trusted Contributor

Re: i have configured two HP 5406zl switches need suggestion...trunk goes to block state for 2920

Hello.  Which of the two 5400R's does the 2920 connect to? On which VLAN(s) is the trunk blocked?

 

Can you attach the output of "show span <vlan> | ex Disabled"?  Also the 2920 config.

 

Thanks.

 

 

shams2
Visitor

Re: i have configured two HP 5406zl switches need suggestion...trunk goes to block state for 2920

sh spanning-tree vlan 300

Spanning Tree Information

STP Enabled [No] : Yes
Mode : RPVST
Extended System ID : Enabled
Ignore PVID Inconsistency : Disabled
Switch MAC Address : 3ca82a-44e200


VLAN ID : 300
RPVST Enabled : Enabled


Root MAC Address : 3ca82a-44e200
Root Priority : 0
Root Path Cost : 0
Root Port : This switch is root
Operational Hello Time (secs) : 2
Topology Change Count : 7
Time Since Last Change : 11 mins


Root Inconsistent Ports :
Loop Inconsistent Ports :
PVID Inconsistent Ports :

Designated
Port Type Cost Priority Role State Bridge
----- ---------- --------- --------- ---------- ---------- ---------------
F24 100/1000T 0 128 Disabled Disabled
Trk1 2000 64 Designated Forwarding 3ca82a-44e200
Trk2 20000 64 Designated Forwarding 3ca82a-44e200
Trk3 20000 64 Designated Forwarding 3ca82a-44e200

shams2
Visitor

Re: i have configured two HP 5406zl switches need suggestion...trunk goes to block state for 2920

core 2: sh span 

 

sh spanning-tree vlan 300

Spanning Tree Information

STP Enabled [No] : Yes
Mode : RPVST
Extended System ID : Enabled
Ignore PVID Inconsistency : Disabled
Switch MAC Address : 3ca82a-454000


VLAN ID : 300
RPVST Enabled : Enabled


Root MAC Address : 3ca82a-44e200
Root Priority : 0
Root Path Cost : 2000
Root Port : Trk1
Operational Hello Time (secs) : 2
Topology Change Count : 4
Time Since Last Change : 12 mins


Root Inconsistent Ports :
Loop Inconsistent Ports :
PVID Inconsistent Ports :

Designated
Port Type Cost Priority Role State Bridge
----- ---------- --------- --------- ---------- ---------- ---------------
F24 100/1000T 20000 128 Designated Forwarding 3ca82a-454000
Trk1 2000 64 Root Forwarding 3ca82a-44e200
Trk2 20000 64 Designated Forwarding 3ca82a-454000
Trk3 20000 64 Designated Forwarding 3ca82a-454000
FSRUH-CORE-SW2(config)#

Michael Patmon
Trusted Contributor

Re: i have configured two HP 5406zl switches need suggestion...trunk goes to block state for 2920

Where is the 2920 connected?  Where is the blocking occurring (port & VLAN)?

 

What is the "show span" output for that switch?  Config?

 

 

 

 

 

 

 

Vince-Whirlwind
Honored Contributor

Re: i have configured two HP 5406zl switches need suggestion...trunk goes to block state for 2920

Is the 2920 connected to port F24 on *both* core switches?

 

If so, unless you configure distributed trunking, then it is normal that one of these links should be blocked.

 

If you are having connectivity problems, then check you have all VLANs membership configured the same on

 - both of the 2920 uplink ports

 - portF24 on both cores

 - on all ports on both sides of the 5406<---->5406 link

Richard Litchfield
Respected Contributor

Re: i have configured two HP 5406zl switches need suggestion...trunk goes to block state for 2920

FYI, if you have the newest 5400R chassis populated with V3 modules only, you can now stack them using a technology called VSF (Virtual Switching Framework). It allows you to use 10Gb or 40Gb ports to stack a pair of 5400R - much the same as the ProCurve 3800/3810 switches, but without the stacking module.