Setting with Cisco switch.

Question

Hi there,

I'm a beginner engineer.

Maybe its problem is so easy to you guys.. , please help me.

I wonder why around "WS-C3560E-24TD-S" ports are Designated port.. even though Dell 8024F is Root switch.

Cisco WS-C3560E-24TD-S's STP mode : PVST

Dell 8024F, 7024P's STP mode : RSTP

----------------------------------------------------------------------------------------------------------------------------------------

After configuring like upper picture, I configured STP mode from PVST, RSTP to MSTP whole switches (Dell & Cisco)

Therefore, PC does not communicate with Internet.

I don't know where do I handle it.

Thank you.

cf)

CISCO_3560E#show spanning-tree vlan 2

VLAN0002
Spanning tree enabled protocol ieee
Root ID Priority 32770
Address 001e.7a4f.c180
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32770 (priority 32768 sys-id-ext 2)
Address 001e.7a4f.c180
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 Edge
Te0/2 Desg FWD 2 128.30 P2p

CISCO_3560E#

Dell_7024P#show spanning-tree active

Spanning tree Enabled (BPDU flooding : Disabled) Portfast BPDU filtering Disabled mode mst
CST Regional Root: F0:00:5C:26:0A:AD:49:AF
Regional Root Path Cost: 0

###### MST 0 Vlan Mapped: 1-4, 50, 90
ROOT ID
Priority 32768
Address D067.E58D.BFDD
Path Cost 20000
Root Port Gi1/0/3
Hello Time 2 Sec Max Age 20 sec Forward Delay 15 sec
Bridge ID
Priority 61440
Address 5C26.0AAD.49AF
Hello Time 2 Sec Max Age 20 sec Forward Delay 15 sec
Interfaces

Name State Prio.Nbr Cost Sts Role RestrictedPort
------ -------- --------- --------- ---- ----- --------------
Gi1/0/1 Enabled 128.1 20000 FWD Desg No
Gi1/0/2 Enabled 128.2 20000 FWD Desg No
--More-- or (q)uit
Gi1/0/3 Enabled 128.3 20000 FWD Root No

Dell_7024P#

Dell_8024F#show spanning-tree active

Spanning tree Enabled (BPDU flooding : Disabled) Portfast BPDU filtering Disabled mode rstp
CST Regional Root: 80:00:D0:67:E5:8D:BF:DD
Regional Root Path Cost: 0

###### MST 0 Vlan Mapped: 1-2
ROOT ID
Priority 32768
Address D067.E58D.BFDD
This Switch is the Root.
Hello Time 2 Sec Max Age 20 sec Forward Delay 15 sec
Interfaces

Name State Prio.Nbr Cost Sts Role RestrictedPort
------ -------- --------- --------- ---- ----- --------------
Te1/0/20 Enabled 128.20 2000 FWD Desg No
Te1/0/22 Enabled 128.22 20000 FWD Desg No

Dell_8024F#

ksk79174766 · Answer

1. I want CISCO Switch is root switch

2. First time I set STP mode to MST whole switches

but PC does not communicate Internet...

so I changed STP mode like pictures mode.

If I want these network design(in the picture situation), should I set mode to MST ?

Thank you.

ksk79174766 · Answer

You said : 'How are your ports configured for the switch to switch connection? How is the port configured that connects your client? What device is the line sharer?' I say : I don't tell you exactly because the purpose I set is just ' test' for my skill up. Line sharer : Korean company's 'ipTIME' I really wonder why these network have 2 root switches.. I have known that one network has one root switch. I think that's because I set mode different each other. right?.. Thanks,

ksk79174766 · Answer

Thank you expert.

but I am still not understanding your word "then you would run into an issue where other VLAN traffic could not connect to the rest of the network."

(run = solve?)

Could you convert another word...these sentence?..

Please.

ksk79174766 · Answer

Ok:)

Then,I should configure STP mode same thing.

But, you know, cisco(WS-C3560E-24TD-S) has 'mst, pvst, rapid-pvst'..

Among them, pvst and rapid-pvst is cisco exclusive.

So... I'm wondering whether I should set STP mode "MST" which is IEEE standard.

So!

Should I configure it to MST mode?..

Networking General

Setting with Cisco switch.

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