MSTP Configuration Commands
195
Use the
undo stp max-hops
command to restore the default Max Hops.
On CIST and MSTIs, the Max Hops configured on the region root determines the
max switching network diameter supported by the local MST region. As the BPDU
travels from the spanning tree root, each time when it is forwarded by a switch,
the max hops will be reduced by 1. The switch discards the configuration BPDU
with 0 hops left, thereby limiting the network scale inside the region. If the current
switch is a CIST root bridge or MSTI root bridge in an MST region, the Max Hops
configured on it will be the network diameter of the spanning tree to limit its scale
in the local MST region. The Max Hops configured on the root bridge in an MST
region will be adopted by other switches in the same region.
Example
# Set the Max Hops of an MST region to 35.
<SW8800>system-view
System View: return to User View with Ctrl+Z.
[SW8800] stp max-hops 35
stp mcheck
Syntax
stp mcheck
View
Ethernet port view
Parameter
None
Description
Use the
stp mcheck
command to perform mCheck on the current port.
If a port of an MSTP switch on a switching network has ever been connected to an
STP switch, the port will automatically transit to operate in STP-compatible mode.
However, when the STP switch is removed, the port stays in STP-compatible mode
and cannot automatically transit back to MSTP mode. In this case, you can
perform mCheck operation to transit the port to MSTP mode by force.
n
By default, MSTP runs in MSTP mode, which is compatible with RSTP and STP (This
mode can recognize MSTP BPDU, STP config BPDU and RSTP config BPDU).
However, the STP switch can only recognize config BPDU (STP BPDU) sent by the
STP and RSTP bridges. After the switch running STP-compatible mode switches
back to MSTP mode, it will not send MSTP BPDU if you do not execute the
stp
mcheck
command. Therefore, the connected device still sends config BPDU (STP
BPDU) to it, causing the same configuration exist in different regions and other
problems. Remember to perform stp interface mCheck after modifying stp mode.
Related command:
stp mode, stp interface mcheck
.
Example
# Set mcheck parameter for Ethernet2/1/1.
<SW8800>system-view
System View: return to User View with Ctrl+Z.
Содержание Switch 8807
Страница 30: ......
Страница 68: ...66 CHAPTER 2 COMMANDS USED TO LOG IN TO SWITCH ...
Страница 78: ...76 CHAPTER 3 CONFIGURATION FILE MANAGEMENT COMMANDS ...
Страница 96: ...94 CHAPTER 5 SUPER VLAN CONFIGURATION COMMANDS ...
Страница 122: ...120 CHAPTER 8 IP PERFORMANCE CONFIGURATION COMMANDS ...
Страница 130: ...128 CHAPTER 9 GARP GVRP CONFIGURATION COMMANDS ...
Страница 162: ...160 CHAPTER 11 ETHERNET LINK AGGREGATION CONFIGURATION COMMANDS ...
Страница 212: ...210 CHAPTER 13 MSTP CONFIGURATION COMMANDS ...
Страница 234: ...232 CHAPTER 16 ACL COMMANDS ...
Страница 282: ...280 CHAPTER 18 ACL CONTROL COMMANDS TO CONTROL LOGIN USERS ...
Страница 293: ......
Страница 294: ...292 CHAPTER 19 VLAN ACL CONFIGURATION COMMANDS ...
Страница 310: ...308 CHAPTER 20 802 1X CONFIGURATION COMMANDS ...
Страница 370: ...368 CHAPTER 21 AAA AND RADIUS HWTACACS PROTOCOL CONFIGURATION COMMANDS ...
Страница 398: ...396 CHAPTER 23 STATIC ROUTE CONFIGURATION COMMANDS ...
Страница 462: ...460 CHAPTER 25 OSPF CONFIGURATION COMMANDS ...
Страница 498: ...496 CHAPTER 26 INTEGRATED IS IS CONFIGURATION COMMANDS ...
Страница 548: ...546 CHAPTER 27 BGP CONFIGURATION COMMANDS ...
Страница 570: ...568 CHAPTER 30 RECURSIVE ROUTING CONFIGURATION ...
Страница 584: ...582 CHAPTER 32 MULTICAST VLAN CONFIGURATION COMMANDS ...
Страница 600: ...598 CHAPTER 33 MULTICAST COMMON CONFIGURATION COMMANDS ...
Страница 604: ...602 CHAPTER 34 STATIC MULTICAST MAC ADDRESS CONFIGURATION COMMAND ...
Страница 656: ...654 CHAPTER 37 MSDP CONFIGURATION COMMANDS ...
Страница 682: ...680 CHAPTER 38 MBGP MULTICAST EXTENSION CONFIGURATION COMMANDS ...
Страница 762: ...760 CHAPTER 40 BGP MPLS VPN CONFIGURATION COMMANDS ...
Страница 807: ...HA Configuration Commands 805 Example Configure the system Xbar load mode SW8800 xbar load balance ...
Страница 808: ...806 CHAPTER 44 HA CONFIGURATION COMMANDS_HA_CONFIGURATION ...
Страница 820: ...818 CHAPTER 45 ARP CONFIGURATION COMMANDS ...
Страница 824: ...822 CHAPTER 46 ARP TABLE SIZE CONFIGURATION COMMANDS max arp entry config of slot 13 8192 ...
Страница 862: ...860 CHAPTER 47 DHCP CONFIGURATION COMMANDS ...
Страница 870: ...868 CHAPTER 48 DNS CONFIGURATION COMMANDS ...
Страница 972: ...970 CHAPTER 56 SSH TERMINAL SERVICE CONFIGURATION COMMANDS ...
Страница 982: ...980 CHAPTER 57 FILE SYSTEM MANAGEMENT COMMANDS ...
Страница 1026: ...1024 CHAPTER 60 INFORMATION CENTER ...
Страница 1046: ...1044 CHAPTER 63 PORT PACKET STATISTICS COMMANDS ...
Страница 1051: ...Ethernet Port Detection Configuration Commands 1049 ...
Страница 1052: ...1050 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Страница 1053: ...Ethernet Port Detection Configuration Commands 1051 ...
Страница 1054: ...1052 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Страница 1055: ......
Страница 1056: ...1054 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Страница 1057: ......
Страница 1058: ...1056 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Страница 1059: ...Ethernet Port Detection Configuration Commands 1057 ...
Страница 1060: ...1058 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Страница 1061: ......
Страница 1062: ...1060 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Страница 1063: ...Ethernet Port Detection Configuration Commands 1061 ...
Страница 1064: ...1062 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Страница 1065: ......
Страница 1066: ...1064 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Страница 1090: ...1088 CHAPTER 66 NQA CONFIGURATION COMMANDS ...