Switch Meshing
Switch Meshing Fundamentals
■ If meshing is configured on the switch, the routing features (IP routing,
RIP, and OSPF) must be disabled. That is, the switch’s meshing and
routing features cannot be enabled at the same time.
■ The spanning-tree configuration must be the same for all switches in the
mesh (enabled or disabled). If spanning tree is enabled in the mesh, it
must be the same version on all switches in the mesh: 802.1D, 802.1w, or
802.1s. If there are any 1600M/2400M/2424M/4000M/8000M switches in the
mesh, then only 802.1D STP can be used.
■ If a switch in the mesh has GVRP enabled, then all switches in the mesh
must have GVRP enabled. Otherwise, traffic on a dynamic VLAN may not
pass through the mesh. Note that the 1600M/2400M/2424M/4000M/8000M
switches do not offer GVRP. Thus, if you are using any of these switches
in the same mesh domain with Series 5300xl, 3400cl, or 6400cl switches,
then GVRP must be disabled on all switches in the mesh.
■ If a switch in the mesh has a particular static vlan configured, then all
switches in the mesh must have that static vlan configured.
■ If a switch in the mesh has IGMP enabled, then all switches in the mesh
must have IGMP enabled.
■ If a switch in the mesh has CDP enabled, then all switches in the mesh
must have CDP enabled. (The Series 3400cl and Series 6400cl switches
read CDP packets but do not generate these packets. Refer to the chapter
titled “Configuring for Network Management Applications” in the Man-
agement and Configuration Guide for your switch.)
■ If a switch in the mesh has LLDP enabled, then all switches in the mesh
must have LLDP enabled.
■ After adding or removing a port from the mesh, you must save the current
configuration and reboot the switch in order for the change to take effect.
■ Multiple meshed domains require separation by either a non-meshed
switch or a non-meshed link. For example:
7-6
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