RE: Spanning tree .. Killing me .. :-(

P2P interfaces are usually full duplex interfaces (no 10Mb/half duplex,
which will show up as Shr for shared). They will also show as P2P when
connected to full duplex router interfaces, etc.

Yes, edge ports connected to end hosts. If you configure an interface with
portfast, even in PVST - it should show up as an edge port.......is Fa2/44
configured with portfast?

PVST = Per-VLAN Spanning Tree which is Cisco's enhancement to regular old
802.1d. You have "spanning-tree mode pvst" in the config, which is why
"Spanning tree enabled protocol ieee" shows up below.

Why are you expecting RSTP to show up in the command output below??? It
isn't enabled.

Aundra (Andre) Browning
CCIE #21901 (R&S)

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
MDevarajan_at_inautix.co.in
Sent: Thursday, December 10, 2009 8:57 AM
To: Radioactive Frog
Cc: Cisco certification; nobody_at_groupstudy.com
Subject: Spanning tree .. Killing me .. :-(

Can someone please help me to understand the below concept..

As per the below output .. I am thinking its running RSTP protocol rite
????

Question 1 : if link type EDGE means .. its connected to enf HOST .. Am I
rite ??
Question 2: if link type is P2P means.. Its connected to other switch...
Am I rite ???

VLAN0005
  Spanning tree enabled protocol ieee
  Root ID Priority 8192
             Address 00d0.0152.1805
             Cost 3
             Port 1665 (Port-channel1)
             Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

  Bridge ID Priority 32768
             Address 00d0.015c.9c05
             Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
             Aging Time 300

Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- --------
--------------------------------
Fa2/44 Desg FWD 19 128.172 Edge P2p
Po1 Root FWD 3 128.1665 P2p
Po2 Desg FWD 3 128.1666 P2p

See the running config

Hxxxxxxxx#sh run | inc span
spanning-tree mode pvst

Please advise me .. if router is running PVST .. Why the hell its showing
as " Spanning tree enabled protocol ieee "

Thanks,
Mohan

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Received on Thu Dec 10 2009 - 10:58:15 ART