Cisco DS-C9216I-K9, Руководство по настройке

Страница: 152 / 436

13-4
Cisco MDS 9000 Fabric Manager Switch Configuration Guide
OL-7753-01
Chapter 13 Configuring Trunking
Trunking Configuration Guidelines
Figure 13-3 Operational and Allowed VSAN Configuration
In Figure 13-3 , the operational allowed list of VSANs between switches is as follows:
• Switch 1 and switch 2 include VSAN 1 and VSAN 3.
•
Switch 2 and switch 3 include VSAN 1 and VSAN 2.
• Switch 3 and switch 1 include VSAN 1, 2, and 5.
Consequently, VSAN 2 can only be routed from switch 1 through switch 3 to switch 2.
Trunking Configuration Guidelines
If you misconfigure VSAN configurations across E ports, you could face consequences such as merging
the traffic in two VSANs (thus causing both VSANs to mismatch). The trunking protocol validates the
VSAN interfaces at both ends of an ISL to avoid VSANs merging. (See
Figure 13-4 .)
Figure 13-4 VSAN Mismatch
In Figure 13-4 , the trunking protocol detects potential VSAN merging and isolates the ports involved.
.
t
s
il
d
e
w
o
ll
a
e
h
t
n
o
e
r
a
3
d
n
a
1
s
N
A
S
V
.l
a
n
o
it
a
r
e
p
o
e
r
a
3
d
n
a
1
s
N
A
S
V
VSANs
1, 2,
5 are
ope
rational
.
VSA
Ns 1
, 2, 5
are
on th
e allo
wed
list.
VSANs 1 and 2 are operational.
VSANs 1 and 2 are on the allowed list.
Switch 3
VSAN1
VSAN2
VSAN4
VSAN5
Switch 1
VSAN1
VSAN2
VSAN3
VSAN4
VSAN5
Switch 2
VSAN1
VSAN2
VSAN3
79946
Isolated
Switch 1 Switch 2
E port
VSAN 2 E port
VSAN 3
VSAN mismatch
85471