ZyXEL Communications GS2210-24, Руководство пользователя

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Chapter 13 Spanning Tree Protocol
GS2210 Series User’s Guide
138
The follow ing t able descr ibes t he labels in t his scr een.
Table 55 Advanced Applicat ion > Spanning Tr ee Pr ot ocol > St at us: MSTP
LABEL DESCRIPTION
Configurat ion Click Con figu r a t ion t o specify w hich STP m ode you w ant t o act ivat e. Click M STP t o edit
MSTP set t ings on t he Sw it ch.
CST This sect ion descr ibes t he Com m on Spanning Tr ee set t ings.
Br idge Root r efer s t o t he base of t he spanning t r ee ( t he r oot br idge) . Ou r Br idge is t his sw it ch.
This Sw it ch m ay also be t he r oot br idge.
Br idge I D This is t he unique ident ifier for t his br idge, consist ing of br idge pr ior it y plus MAC addr ess.
This I D is t he sam e for Root and Ou r Br idge if t he Sw it ch is t he r oot sw it ch.
Hello Tim e
( second) This is t he t im e int er val ( in seconds) at w hich t he r oot sw it ch t ransm it s a configurat ion
m essage. The r oot br idge det er m ines Hello Tim e, Max Age and For war ding Delay.
Max Age ( second) This is t he m ax im um t im e ( in seconds) t he Sw it ch can wait w it hout r eceiv ing a
configurat ion m essage befor e at t em pt ing t o r econfigur e.
For war ding Delay
( second) This is t he t im e ( in seconds) t he r oot sw it ch w ill wait befor e changing st at es ( t hat is,
list ening t o lear ning t o for war ding) .
Cost t o Br idge This is t he pat h cost from t he r oot por t on t his Sw it ch t o t he r oot sw it ch.
Port I D This is t he pr ior it y and num ber of t he por t on t he Sw it ch t hr ough w hich t his Sw it ch m ust
com m unicat e w it h t he r oot of t he Spanning Tr ee.
Configurat ion
Nam e This field displays t he configurat ion nam e for t his MST r egion.
Revision Num ber This field displays t he r ev ision num ber for t his MST r egion.
Configurat ion
Digest A configurat ion digest is generat ed fr om t he VLAN- MSTI m apping infor m at ion.
This field display s t he 16- oct et signat ur e t hat is included in an MSTP BPDU. This field
display s t he digest w hen MSTP is act ivat ed on t he sy st em .
Topology Changed
Tim es This is t he num ber of t im es t he spanning t r ee has been r econfigured.
Tim e Since Last
Change This is t he t im e since t he spanning t r ee w as last r econfigur ed.
I nst ance: These fields display t he MSTI t o VLAN m apping. I n ot her w or ds, w hich VLANs r un on each
spanning t r ee inst ance.
I nst ance This field display s t he MSTI I D.
VLAN This field display s w hich VLANs ar e m apped t o an MSTI .
MSTI Select t he MST inst ance set t ings you want t o view.
Br idge Root r efer s t o t he base of t he MST inst ance. Ou r Br idge is t his sw it ch. This Sw it ch m ay
also be t he r oot br idge.
Br idge I D This is t he unique ident ifier for t his br idge, consist ing of br idge pr ior it y plus MAC addr ess.
This I D is t he sam e for Root and Ou r Br idge if t he Sw it ch is t he r oot sw it ch.
I nt er nal Cost This is t he pat h cost from t he r oot por t in t his MST inst ance t o t he r egional r oot sw it ch.
Port I D This is t he pr ior it y and num ber of t he por t on t he Sw it ch t hr ough w hich t his Sw it ch m ust
com m unicat e w it h t he r oot of t he MST inst ance.
Port This field display s t he num ber of t he por t on t he Sw it ch.
Port St at e This field display s t he por t st at e in STP.
• D isca r din g - The por t does not for war d/ pr ocess r eceived fram es or lear n MAC
addr esses, but st ill list ens for BPDUs.
• Le a r n in g - The por t lear ns MAC addr esses and pr ocesses BPDUs, but does not
for war d fram es yet .
• For w a r din g - The por t is operat ing nor m ally. I t lear ns MAC addr esses, pr ocesses
BPDUs and for wards r eceived fram es.