Qtech QSW-2900-24T-AC [160/209] Brief introduction of mstp

10-158
TCN: 0, RST: 9, Config BPDU: 0
received BPDU: 4040
TCN: 0, RST: 4040, Config BPDU: 0
10.2.16 Enable/disable STP remote-loop-detect
When multi-layer cascading, if switch in media layer shut down STP, the BPDU packet sent by upper switch
will be cut by switch in media layer. When there is loop in the network below the media layer, upper switch cannot
detect the loop. Remote loop detect is the complementary for this situation.
a) Enable STP remote-loop-detect
· In interface configuration mode
spanning-tree remote-loop-detect
· In global configuration mode
spanning-tree remote-loop-detect interface
Use no command to disable this function.
For example:
! Enable spanning-tree remote-loop-detect interface of Ethernet 0/1
QTECH(config)#spanning-tree remote-loop-detect interface ethernet 0/1
! Disable remote-loop-detect of Ethernet 0/1
QTECH(config-if-ethernet-0/1)#no spanning-tree remote-loop-detect
10.3 Brief Introduction of MSTP
Multiple spanning tree(IEEE802.1S, MSTP) is the upgrade for SST(Simple spanning tree, IEEE8021.D/8021,
W). SST can realize link redundancy and loopback but cause the waste of effective bandwidth and overload of some
link but backup of others because all vlans share a tree. MSTP makes up these flaw and realize overload balance as
SST by mapping different vlan to different STP example, that is, different STP example can generate different
topology and different vlan data can choose different transmiting channel according to different STP example.
10.4 MSTP Configuration
10.4.1 MSTP configuration list
The parameter in MSTP configuration only can be effective after STP enables and the mode is MSTP. The
parameter configuration is reserved after MSTP disables and enables next time. The MSTP configuration list is as
following:
· Configure MSTP timer parameter
· Configure MSTP configuration mark
· Configure MSTP netbridge priority
· Configure MSTP interface edge interface status
· Configure MSTP interface link type
· Configure MSTP interface path cost
· Configure MSTP interface priority

Содержание

Скачать
Случайные обсуждения