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10-02-2016 09:52 PM
10-02-2016 09:52 PM
default stp port cost value on hp2530
Hi
I would like to confirm about default stp port cost value of hp2530.
My understanding...
In only Gigabit link, default stp port cost value is 4.
In 2 Gigabit Bagg (LACP) link , default stp port cost is 4 . (same of other link speed value.) , and Cisco etherchannel is 3.
But, following environment, In hp2530 Giga link's stp port cost is 5.
Is this correct ??
[edge sw] [access sw#1] [core sw#1]
hp2530-24 port 23 ------ hp5500-24 ------- hp5500-24
port24 || bagg || bagg
|------------- hp5500-24 ------- hp5500-24
[access sw#2] [ core sw#2]
bagg ... configured 2 giga-link ports
STP mode …RSTP
bridge priority … core sw#1 =0 (route bridge)
core sw#2 =4096
access sw#1 =8192
access sw#1 =16384
edge sw =20480
port cost value … default
block port … access sw#2 bagg1 , edge sw port24
Each links are negotiated in gigabit link