[e-nsp] Problem with MST cisco and extreme switches
Ramón Alvarez Rayo
ramon.alvarez at alfanumeric.com.ni
Tue Dec 12 17:08:15 EST 2006
John,
Thanks, but i have some questions:
a. how long time take to recover from a link fail using this scheme?
b. I did the changes and it is not working, it seems that stpd is working
but I can´t ping between switches using vlan 500 interface. Any ideay why is
it?
Here is the config:
enable stpd ALFA1 rapid-root-failover
configure stpd ALFA1 tag 500
configure stpd ALFA1 mode dot1w
configure stpd ALFA1 port mode pvst-plus 49 configure stpd ALFA1 port
link-type point-to-point 49 configure stpd ALFA1 port mode pvst-plus 50
configure stpd ALFA1 port link-type point-to-point 50 enable stpd ALFA1
KNITWEAR:9 # show stpd ALFA1
Stpd: ALFA1 Stp: ENABLED Number of Ports: 2
Rapid Root Failover: Enabled
Operational Mode: 802.1W
802.1Q Tag: 500
Ports: 49(KNITWEAR-HMILIT),50(KNITWEAR-ALFANU)
Active Vlans: BACKBONE
Bridge Priority: 32768
BridgeID: 80:00:00:04:96:22:cf:60
Designated root: 80:00:00:04:96:22:cf:60
RootPathCost: 0 Root Port: ----
MaxAge: 20s HelloTime: 2s ForwardDelay: 15s
CfgBrMaxAge: 20s CfgBrHelloTime: 2s CfgBrForwardDelay: 15s
Topology Change Time: 35s Hold time: 1s
Topology Change Detected: FALSE Topology Change: FALSE
Number of Topology Changes: 5
Time Since Last Topology Change: 1688s
KNITWEAR:10 # show stpd ALFA1 ports detail
Stpd: ALFA1 Port: 49(KNITWEAR-HMILIT) PortId: 4031 Stp: ENABLED
Path Cost: 4
Port Mode: PVST+
Port State: FORWARDING Topology Change Ack: FALSE
Port Priority: 16 Loopback Port: FALSE
Designated Root: 80:00:00:04:96:22:cf:60 Designated Cost: 0
Designated Bridge: 80:00:00:04:96:22:cf:60 Designated Port Id: 4031
Partner STP version: Dot1w
Stpd: ALFA1 Port: 50(KNITWEAR-ALFANU) PortId: 4032 Stp: ENABLED
Path Cost: 4
Port Mode: PVST+
Port State: FORWARDING Topology Change Ack: FALSE
Port Priority: 16 Loopback Port: FALSE
Designated Root: 80:00:00:04:96:22:cf:60 Designated Cost: 0
Designated Bridge: 80:00:00:04:96:22:cf:60 Designated Port Id: 4032
Partner STP version: Dot1w
THANKS,
-----Mensaje original-----
De: john.center at villanova.edu [mailto:john.center at villanova.edu]
Enviado el: Martes, 12 de Diciembre de 2006 03:20 p.m.
Para: Ramón Alvarez Rayo
Asunto: Re: [e-nsp] Problem with MST cisco and extreme switches
Hi Ramón,
ExtremeWare 7.4 does not support 802.1s. Version 7.6 supports it. You
could make this work with EW 7.4 if you use PVST+. Change the cisco
config from:
spanning-tree mode mst
to
spanning-tree mode rapid-pvst
On the extreme switch add:
configure stpd ALFA1 port mode pvst-plus 49
...
to indicate the type of BPDU that will be seen on the port. We do this
& it works well.
HTH
-John
Ramón Alvarez Rayo wrote:
> Hello,
>
>
>
> I am closing a fibre ring with 2 extreme summit 48si/Full L3 and a cisco
> 2960, i´m tryng to connect using MSTP but I can´t see any packets
> between extreme switches and catalyst switch, this is the configuration:
>
>
>
> NODO 2
>
>
>
> configure vlan "BACKBONE" tag 500 # VLAN-ID=0x1f4 Global Tag 3
>
> configure stpd ALFA1 add vlan "BACKBONE"
>
> configure vlan "BACKBONE" ipaddress 10.240.0.2 255.255.255.224
>
> configure vlan "BACKBONE" add port 49 tagged
>
> configure vlan "BACKBONE" add port 50 tagged
>
>
>
> enable stpd ALFA1 rapid-root-failover
>
> configure stpd ALFA1 tag 500
>
> configure stpd ALFA1 mode dot1w
>
> configure stpd ALFA1 port link-type point-to-point 49
>
> configure stpd ALFA1 port link-type point-to-point 50
>
> enable stpd ALFA1
>
>
>
> NODO 3
>
>
>
> configure vlan "BACKBONE" tag 500 # VLAN-ID=0x1f4 Global Tag 3
>
> configure stpd ALFA1 add vlan "BACKBONE"
>
> configure vlan "BACKBONE" ipaddress 10.240.0.3 255.255.255.224
>
> configure vlan "BACKBONE" add port 49 tagged
>
> configure vlan "BACKBONE" add port 50 tagged
>
>
>
> enable stpd ALFA1 rapid-root-failover
>
> configure stpd ALFA1 tag 500
>
> configure stpd ALFA1 mode dot1w
>
> configure stpd ALFA1 port link-type point-to-point 49
>
> configure stpd ALFA1 port link-type point-to-point 50
>
> enable stpd ALFA1
>
>
>
> On cisco switch this is the configuration:
>
>
>
> spanning-tree mode mst
>
> spanning-tree extend system-id
>
> !
>
> spanning-tree mst configuration
>
> name ALFA1
>
> revision 7
>
> instance 1 vlan 500
>
> !
>
> vlan internal allocation policy ascending
>
>
>
> interface GigabitEthernet0/1
>
> description !!! NODO1-TO-NODO2 !!!
>
> switchport trunk native vlan 500
>
> switchport trunk allowed vlan 500
>
> switchport mode trunk
>
> switchport nonegotiate
>
> spanning-tree link-type point-to-point
>
> !
>
> interface GigabitEthernet0/2
>
> description !!! NODO1-TO-NODO3 !!!
>
> switchport trunk native vlan 500
>
> switchport trunk allowed vlan 500
>
> switchport mode trunk
>
> switchport nonegotiate
>
> spanning-tree link-type point-to-point
>
>
>
> interface Vlan500
>
> ip address 10.240.0.1 255.255.255.224
>
>
>
> Extreme Version: Image : Extremeware Version 7.4.4.9
>
> Cisco Catalyst: Version 12.2(25)SEE2
>
>
>
> Thanks,
>
>
>
>
> ------------------------------------------------------------------------
>
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--
John Center
Villanova University
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