4-24
Switch Meshing
Operating Notes for Switch Meshing
Figure 4-17. Example of a Two-Tier Mesh Design
Figure 4-18. Example of a Fully Interconnected Mesh with the Maximum Switch Count
Other factors affecting the performance of mesh networks include the number
of destination addresses that have to be maintained, and the overall traffic
levels and patterns. However a conservative approach when designing new
mesh implementations is to use the two-tier design and limit the mesh domain
to eight switches where possible.
Other Requirements and Restrictions
â– Mesh Support Within the Domain: All switches in the mesh domain,
including edge switches, must support the HP switch meshing protocol.
â– Switch Hop Count in the Mesh Domain: A maximum of five (meshed)
switch hops is allowed in the path connecting two nodes in a switch mesh
domain. A path of six meshed hops is unusable. However, this does not
interfere with other, shorter paths in the same domain.
â– Connecting Mesh Domains: To connect two separate switch meshing
domains, you must use non-meshed ports. (The non-meshed link can be
a port trunk or a single link.) Refer to figure 4-3 on page 4-5.
Switch 1
Switch 2
Switch 3
Switch 4
Switch 5
Switch 6 Switch 7
Switch 8
As shown here, meshing
allows multiple redundant
links between switches in the
domain, and more than one
link is allowed between any
two switches in the domain.
Note also that a switch can
have up to 24 ports configured
for meshing.
Switch
5
Switch
1
Switch
2
Switch
4
Switch
3
As noted above, a switch
can have up to 24 ports
configured for meshing.
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