HPE 5920 Series Command Reference Manual page 20

Views
Layer 2 Ethernet interface view, Layer 2 aggregate interface view
Predefined user roles
network-admin
Parameters
value: Specifies a VDP keepalive exponent in the range of 14 to 31.
Usage guidelines
The value for VDP keepalive time is expressed by the following equation:
VDP keepalive time (seconds) = 1.5 × [ 2
ECP retransmission
2
For detailed values, see
Table 7 uses 3 and 16 (the defaults) as the ECP maximum retransmission time and the ECP
retransmission exponent to calculate the VDP keepalive time. These two variables use the larger
values proposed by the station and bridge through EVB TLV.
The network environment and configurations on the EVB bridge and station determine whether to
use the defaults or the actual proposed values for the following ECP values:
•
ECP maximum retransmission time.
•
ECP retransmission exponent.
Table 7 Values for VDP keepalive time
VDP keepalive exponent
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
5
—
] × 10
Table 7.
Calculated value (seconds)
7.12704
7.37280
7.86432
8.84736
10.81344
14.7456
22.60992
38.33856
69.795084
132.7104
258.53952
510.19776
1013.51424
2020.1472
4033.41312
8059.94496
16113.00864
32219.136
VDP keepalive
+ (2 × ECP maximum retransmission time + 1) ×
17
Result value (seconds)
8
8
8
9
11
15
23
39
70
133
259
511
1014
2021
4034
8060
16114
32220