Cisco Systems A9014CFD manual Configuring MST on EVC Bridge Domain, 13-4

Chapter 13 Configuring MST on EVC Bridge Domain

Contents

Gi12/5	Root	FWD	20000	128.2821	P2p
Gi12/6	Altn	BLK	20000	128.2822	P2p

nPE1#

Configuring MST on EVC Bridge Domain

Figure 13-1shows an example of the untagged EVCs that do not participate in MST loop detection. When you link your networks together as shown below, a loop is caused since MST is not running on the untagged EVCs.

Figure 13-1 Untagged EVCs not participating in MST loop detection

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
13-4	OL-23826-09