EMC CX600 Configuration Guide - Page 23
Extended Fabric Licensing, Fabrics Including DWDM Connections, DS-xxM Series Switches - user guide
 |
View all EMC CX600 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 23 highlights
February 3, 2003 EMC CLARiiON Open Systems Configuration Guide Extended Fabric Licensing Enables each DS-xxB, DS-xxB2, or ED-12000B quad in an extended fabric to use a total of 108 buffer-to-buffer credits shared between the four ports. The number of credits used by each port depends on the switch operating speed and connection length and type, as shown in Table 1. Extended fabric licensing is not required for distances under 10 kilometers. Table 1 Buffer-to-Buffer Credits for DS-xxB and ED-12000B Extended Fabric Connections Operating Speed Level 0 (
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18 -
19 -
20 -
21 -
22 -
23 -
24 -
25 -
26 -
27 -
28 -
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
-
63
-
64
-
65
-
66
-
67
-
68
-
69
-
70
-
71
-
72
-
73
-
74
-
75
-
76
-
77
-
78
-
79
-
80
-
81
-
82
-
83
-
84
-
85
-
86
-
87
-
88
-
89
-
90
-
91
-
92
-
93
-
94
-
95
-
96
-
97
-
98
-
99
-
100
-
101
-
102
-
103
-
104
-
105
-
106
-
107
-
108
-
109
-
110
-
111
-
112
-
113
-
114
-
115
-
116
-
117
-
118
-
119
-
120
-
121
-
122
-
123
-
124
-
125
-
126
-
127
-
128
-
129
-
130
-
131
-
132
-
133
-
134
-
135
-
136
-
137
-
138
-
139
-
140
-
141
-
142
-
143
-
144
-
145
-
146
-
147
-
148
-
149
 |
 |
February 3, 2003
EMC CLARiiON Open Systems Configuration Guide
Document Rev
19
Page 23
EMC Confidential
Extended Fabric Licensing
Enables each DS-xxB, DS-xxB2, or ED-12000B quad in an extended fabric to use a total of 108 buffer-to-buffer
credits shared between the four ports. The number of credits used by each port depends on the switch operating
speed and connection length and type, as shown in Table 1. Extended fabric licensing is not required for distances
under 10 kilometers.
Table 2 provides examples of how expenditures within the 108-credit limit restrict port availability within quads in
extended fabric configurations.
Fabrics Including DWDM Connections
Switches with SWL GBICs that connect directly to DWDM devices require an extended distance license, which
provides access to the buffer-to-buffer credits total of 108.
All switches in a DWDM fabric must be enabled for long distance operations. Use either the telnet.exe
CONFIGURE command to set Long Distance Fabric to [1] or the WebTools Switch Admin user interface to
ENABLE extended fabric mode.
Refer to
EMC Support Matrix
for a list of the supported DWDM devices.
DS-xxM Series Switches
DS-16M-0D or DS-16M2-0D Switch
16 shortwave length (SWL) SFPs; maximum of 8 ISLs.
DS-24M2-08C Switch
8 shortwave length (SWL) SFPs standard that can be expanded to 16 or 24 ports.
DS-32M-0D or DS-32M2-0D Switch
32 shortwave length (SWL) SFPs; maximum of 16 ISLs.
Table 1
Buffer-to-Buffer Credits for DS-xxB and ED-12000B Extended Fabric Connections
Operating Speed
Level 0 (<10 km)
F Port
Level E
(<10 km)
E Port
Level 1 (10-50 km)
Level 2 (50-100 km)
1 Gbps
16 credits
26 credits
27 credits
60 credits
2 Gbps
(DS-16B2, DS-32B2, ED12000B)
16 credits
26 credits
54 credits
108 credits
Table 2
Extended Fabric Port Configuration per Quad (DSxxB Series and ED-12000B)
Operating Speed
Port 0
Port 1
Port 2
Port 3
B-B Credit Total
1 Gpbs
Level 2/E-port (60)
Level 1/E-port (27)
Level 0/F-port (16)
Not available
103
Level 2/E-port (60)
Level 0/E-port (26)
Level 0/F-port (16)
Not available
102
Level 1/E-port (27)
Level 1/E-port (27)
Level 1/E-port (27)
Level 1/E-port (27)
108
2 Gbps
(DS-16B2, DS-32B2, ED12000B)
Level 0/E-port (26)
Level 0/E-port (26)
Level 0/E-port (26)
Level 0/E-port (26)
104