The spanning-tree tag has no wiki summary.
0
votes
1answer
27 views
Strange behavoir of PVST
: The spanning-tree root for vlan 1050(192.168.50.0) is Core2
: The spanning-tree root for vlan 1020(192.168.20.0) is Core1
I was trying to add some redundancy to my network and added the links ...
1
vote
1answer
49 views
Does native vlan tagging work with voice vlan?
we hard-code native vlan tagging:
vlan dot1q tag native
then we configure a port like this:
interface FastEthernet0/1
switchport access vlan 20
switchport mode access
switchport voice vlan 500
mls ...
0
votes
1answer
135 views
Netgear GS724T port issue between two switches
We have three 24 port (Gigabit) Netgear GS724T switches which are connected in the following way:
SW-003 > SW-001
> SW-002
The port on SW-002 that connects to Sw-003 is constantly ...
1
vote
2answers
185 views
Spanning Tree blocking DHCP requests in Windows/BOOTP
We have a LAN with 3 Cisco switches (SLM2048), a handful of Windows Servers and some WinXP/Win7PRO workstations. All devices are on the same LAN, no VLANs, nothing special configured on the switch ...
0
votes
3answers
60 views
Stackwise and RSTP states of other uplinks
Assuming I've got four C3750X, each side stacked with Stackwise Plus and using RSTP:
C1 -----10Gbit----- C2
| |
| |
SW SW
| |
...
0
votes
1answer
102 views
For a switch using RSTP (or MSTP) on which port states/roles does it send BPDUs?
In trying to wrap my head around MSTP and RSTP I have read conflicting information about which ports a switch will send BPDUs through. It is clear to me that for MSTP the switch sends the BPDUs needed ...
1
vote
1answer
304 views
SSTP BPDU with bad TLV and macflap — info please
I'm slowly locking down the network I've inherited and mac-flapping has been a problem in the past with customers doing all kinds of crazy things. Thats changing but I am now encountering this error:
...
1
vote
1answer
102 views
Firewall that supports HighAvailability and Spanning Tree
I'm looking for a firewall appliance that supports high availability and spanning tree.
I have two ha-cluster nodes and I'd like to protect them with a firewall. To avoid a single point of failure, ...
0
votes
1answer
1k views
Spanning Tree Portfast in JUNOS
Can someone tell me what the Juniper JUNOS equivalent is for Cisco's spanning tree portfast command? My google-fu keeps leading me to long whitepapers on Spanning tree and not so much configuration ...
1
vote
1answer
741 views
Spanning Tree required/desired for Port-Channel?
I have two Dell PowerConnect switches I want to connect together via Port-Channel links (2 ethernet links).
Spanning tree is enabled on both switches, so therefore applied to all interfaces unless ...
2
votes
1answer
82 views
Network topology, clearing congestion
Our networking components consist of (3) x D-Link DGS 1248T Switches, and a router.
We have 4-5 servers running as VMWare Host, HTTPD, and Storage.
The clients on the network are connected to the ...
3
votes
3answers
504 views
Redundant Ethernet links from a Linux box
This could be an RTFM kind of question. If so, I'll gladly award the answer to whoever gives a link to TFM :)
In my racks, I've got redundancy all over the place. Two sets of switches, two upstream ...
5
votes
1answer
395 views
Setting spanning tree link “priorities” in Cisco switches
I've got a pair of C2960G-48 switches (running IOS 12.2(46)SE, if it makes a difference) with redundant trunks in place. On these switches there are a bunch of VLANs that carry quite heavy traffic at ...
1
vote
2answers
215 views
Should the 3Com NJ225 switch implement the spanning tree protocol?
We recently purchased some 3Com IntelliJack NJ225 switches:
The specification states that they support IEEE 802.1D, and a mandatory part of this standard is support for the rapid spanning tree ...
7
votes
5answers
1k views
Spanning Tree Setup
I understand the basics of spanning tree, but that's about it. I'm hoping that someone can tell me if this will work as I want it to.
I've got two Cisco ACE load ballancers setup for redundancy. ...
2
votes
8answers
916 views
New MPLS link bringing network to a halt - Spanning Tree Protocol
We have a simple 2 office location network. This was previuosly connected via kilostream connection. This has now been replaced by an MPLS connection using Cisco routers.
When we connect the MPLS to ...
3
votes
2answers
1k views
Preventing packet storm on VLAN
I've got a connection in a datacenter where the network provider gives me two Ethernet connections. They're supposedly hooked up to the same VLAN, such that I can wire them up to my switch and only ...
