RE: *shr* type?

From: Spyros Kranis (skranis@algosystems.gr)
Date: Fri Oct 06 2006 - 14:02:53 ART


Aris,

This is due to the duplex at this specific port.
The switch derives the link type of a port from the duplex mode.
A full-duplex is considered a point-to-point link,
and a half-duplex is considered a shared link.

Look below what is happening by changing the duplex mode:

Enter configuration commands, one per line. End with CNTL/Z.
Central_4507(config)#int fa4/26
Central_4507(config-if)#duplex full
Central_4507(config-if)#do sh spann int fa4/26

Vlan Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- --------
--------------------------------
VLAN0002 Desg FWD 19 128.218 Edge P2p
Central_4507(config-if)#duplex half
Central_4507(config-if)#do sh spann int fa4/26

Vlan Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- --------
--------------------------------
VLAN0002 Desg FWD 19 128.218 Edge Shr
Central_4507(config-if)#

Hth

Spyros

Spyros Kranis
Network Engineer
CCIE #14922
 
Algosystems S.A.
 

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Zikopoulos Aristomenis
Sent: Friday, October 06, 2006 10:19 AM
To: nobody@groupstudy.com
Cc: ccielab@groupstudy.com
Subject: *shr* type?

Hi Group,
I have always seen link type is P2P in spanning tree but here f0/11
shows * Shr*.
What is the *shr* type?

VLAN0063
  Spanning tree enabled protocol ieee
  Root ID Priority 32831
             Address 0005.ddc2.1b00
             This bridge is the root
             Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
          
  Bridge ID Priority 32831 (priority 32768 sys-id-ext 63)
             Address 0005.ddc2.1b00
             Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
             Aging Time 300
          
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- --------
--------------------------------
Gi0/1 Desg FWD 4 128.1 P2p
Gi0/2 Desg FWD 4 128.2 P2p
Gi0/3 Desg FWD 4 128.3 P2p
Gi0/6 Desg FWD 19 128.6 P2p
Gi0/7 Desg FWD 100 128.7 Shr

Regards,
Aris



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