<?xml:namespace prefix = "v" ns = "urn:schemas-microsoft-com:vml" /> <?xml:namespace prefix = "o" ns = "urn:schemas-microsoft-com:office:office" />
【Problem Description】
Aftercommunicate with L1 engineer by email at 10:18 am time, the problem is VSI shifting while LDP down cannot trigger MSTP, L1 wants to solve it , solution should be supplied before2018-04-13.
【Problem Analysis】
topology is like this:
After remote tonight , this issue is what VSI down cann't trigger the interface becoming Forwarding from Discarding of STP state.
the RD will test a way to solve it , solution will be provided on this week.
And please ask customer feedback the diagnostic-information of below six devices
Govind-Puri // Net4Plant // Sormandal // Google // Maxmode // Core-127000
【Root Cause】
the link between PE is down (VSI is down ), wiil not send message to CE , MSTP cannot feel uplink changge , it's decide by protocol .
tha's why when VSI down ,cannot trigger MSTP state.
【Solution Description】
Hi sir,
Please see my as below
Using monitor-link to trigger the VSI and MSTP ,when the uplink is down ,can trigger the downlink down too ,and vice versa for UP status..
Please refer the command as below
<GoogleNet-S5720>
[GoogleNet-S5720] monitor-link group 1
[GoogleNet-S5720-mtlk-group1] port XGigabitEthernet0/0/1 uplink
[GoogleNet-S5720-mtlk-group1] port GigabitEthernet0/0/1 downlink 1
[GoogleNet-S5720-mtlk-group1] port GigabitEthernet0/0/2 downlink 2
[Net4planet-S5720]
[Net4planet -S5720] monitor-link group 1
[Net4planet -S5720-mtlk-group1] port XGigabitEthernet0/0/1 uplink
[Net4planet -S5720-mtlk-group1] port GigabitEthernet0/0/1 downlink 1
[Net4planet -S5720-mtlk-group1] port GigabitEthernet0/0/2 downlink 2
Please refer link as below:
http://support.huawei.com/hedex/pages/EDOC1000101619DEF0414R/06/EDOC1000101619DEF0414R/06/resources/dc/port_monitor_link_group_view.html?ft=0&fe=10&hib=12.1.13.4.9&id=port_monitor_link_group_view&text=port (Monitor Link group view)&docid=EDOC1000101619
vsi trigger STP
Created: Apr 20, 2018 17:06:34
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