WEBVTT

1
00:00:00.100 --> 00:00:07.100
Connect three Cisco Catalyst switches in a chain for this PTP lab.

2
00:00:30.150 --> 00:00:34.650
Enable boundary clock mode on each switch.

3
00:00:44.350 --> 00:00:51.850
Give the first switch the lowest priority value so it becomes the grandmaster.

4
00:01:02.900 --> 00:01:09.900
Check that the middle switch receives time upstream and provides it downstream.

5
00:01:19.800 --> 00:01:25.800
The last switch sees the grandmaster through the middle switch.

6
00:01:38.050 --> 00:01:45.550
Disable PTP on the link from the middle switch to the last switch.

7
00:01:52.700 --> 00:01:58.100
The isolated switch now reports itself as grandmaster.

8
00:02:15.450 --> 00:02:22.450
Reenable PTP on the link and check that the original grandmaster returns.