Configuring Global Settings - Edge-Core Direk Tronik 24/48-Port Management Manual

22
Spanning Tree Algorithm Configuration
Eth 1/ 1 information
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Admin status:
Role:
State:
External admin path cost: 10000
Internal admin cost:
External oper path cost:
Internal oper path cost:
Priority:
Designated cost:
Designated port:
Designated root:
Designated bridge:
Fast forwarding:
Forward transitions:
Admin edge port:
Oper edge port:
Admin Link type:
Oper Link type:
Spanning Tree Status:
.
.
.
Note:
The current root port and current root cost display as zero when this device is not
connected to the network.

Configuring Global Settings

Global settings apply to the entire switch.
Command Usage
• Spanning Tree Protocol
Uses RSTP for the internal state machine, but sends only 802.1D BPDUs. This
creates one spanning tree instance for the entire network. If multiple VLANs are
implemented on a network, the path between specific VLAN members may be
inadvertently disabled to prevent network loops, thus isolating group members.
When operating multiple VLANs, we recommend selecting the MSTP option.
• Rapid Spanning Tree Protocol
RSTP supports connections to either STP or RSTP nodes by monitoring the
incoming protocol messages and dynamically adjusting the type of protocol
messages the RSTP node transmits, as described below:
- STP Mode – If the switch receives an 802.1D BPDU (i.e., STP BPDU) after a
port's migration delay timer expires, the switch assumes it is connected to an
802.1D bridge and starts using only 802.1D BPDUs.
- RSTP Mode – If RSTP is using 802.1D BPDUs on a port and receives an RSTP
BPDU after the migration delay expires, RSTP restarts the migration delay timer
and begins using RSTP BPDUs on that port.
1. STP and RSTP BPDUs are transmitted as untagged frames, and will cross any VLAN
boundaries.
22-6
enabled
disable
discarding
10000
10000
10000
128
300000
128.1
32768.0000E8AAAA00
32768.0030F1D473A0
disabled
0
disabled
disabled
auto
point-to-point
enabled
1
1