HP ProCurve 6400cl Series - Bringing up a Switch Mesh Domain; Further Operating Information

Switch Meshing
Switch Meshing Fundamentals
Host
(Both links
use the
same
MAC
address.)
3400cl,
6400cl, or
5300xl
Switch
Untagged VLAN 1
Tagged VLAN 20
Mesh Domain "A"
Switch
4000M
In this topology, the presence of a host using the same MAC address in multiple links to different meshed
switches means that Mesh Domain "B" cannot be merged with Mesh Domain "A" to form a single mesh
domain. This is because Mesh Domain "B" includes a Switch 1600M, 2400M 2424M, 4000M, or 8000M.
3400cl,
6400cl, or
5300xl
Switch
3400cl,
6400cl, or
5300xl
Switch
3400cl,
6400cl, or
5300xl
Switch
3400cl,
6400cl, or
5300xl
Switch
3400cl,
6400cl, or
5300xl
Switch
Figure 7-7. Example of Topology Where Adjacent Switch Meshes Cannot Be Merged Into a Single Mesh
■ Automatic Broadcast Control (ABC) on HP Procurve 8000M/4000M/
2424M/2400M/1600M switches is not supported when these switches are
used in the same mesh domain with 3400cl, 6400cl,or 5300xl switches.
Thus, in a mesh domain populated with all three types of switches, ABC
must be disabled which is (the default setting) on all of the 8000M/4000M/
2424M/2400M/1600M switches in the domain.
Bringing Up a Switch Mesh Domain:
When a meshed port detects a non-meshed port on the opposite end of a point-
to-point connection, the link will be blocked. Thus, as you bring up switch
meshing on various switches, you may temporarily experience blocked ports
where meshed links should be running. These conditions should clear them-
selves after all switches in the mesh have been configured for meshing and
their switches rebooted. To reduce the effect of blocked ports during bring-
up, configure meshing and reboot the switches before installing the meshed
switches in the network. Also, since adding (or removing) a meshed port
requires a switch reboot to implement, you can avoid repeated system disrup-
tions by waiting to implement the mesh until you have finished configuring
meshing on all ports in your intended mesh domain.
Further Operating Information
Refer to “Operating Notes for Switch Meshing” on page 7-18.
7-10