Appendix A: MSTP Overview
388
Figure 158. CIST and VLAN Guideline - Example 2
When port 3 on switch B receives a BPDU, the switch notes the port sending
the packet belongs only to CIST 0. Therefore, switch B uses CIST 0 in
determining whether a loop exists. The result would be that the switch detects
a loop because the other port is also receiving BPDU packets from CIST 0.
Switch B would block port 3 to cancel the loop.
To avoid this issue, always assign all VLANs on a switch, including the Default
VLAN, to an MSTI. This guarantees that all ports on the switch have an MSTI
ID and helps to ensure that loop detection is based on MSTI, not CIST.
Содержание AT-GS950/48
Страница 10: ...Contents 10...
Страница 14: ...Figures 14...
Страница 16: ...List of Tables 16...
Страница 20: ...Preface 20...
Страница 22: ...22...
Страница 62: ...Chapter 2 System Configuration 62...
Страница 64: ...64...
Страница 108: ...Chapter 6 Static Port Trunking 108...
Страница 124: ...Chapter 8 Port Mirroring 124...
Страница 186: ...Chapter 13 Virtual LANs 186...
Страница 194: ...Chapter 14 GVRP 194...
Страница 210: ...210...
Страница 224: ...Chapter 16 SNMPv1 and v2c 224...
Страница 242: ...Chapter 17 SNMPv3 242...
Страница 258: ...Chapter 18 Access Control Configuration 258...
Страница 272: ...Chapter 19 RMON 272...
Страница 302: ...Chapter 21 Security 302...
Страница 324: ...Chapter 23 LLDP 324...
Страница 338: ...338...
Страница 356: ...Chapter 27 LED ECO Mode 356...
Страница 360: ...Chapter 28 Energy Efficient Ethernet 360...
Страница 370: ...Chapter 29 Rebooting the AT GS950 48 370...
Страница 392: ...Appendix A MSTP Overview 392...