Limitations; Preparing A Mixed Stack For Ipv6 Proxy Routing - Enterasys SecureStack C2 C2G170-24 Configuration Manual

Preparing a Mixed Stack for IPv6 Proxy Routing

Limitations

• Proxy routing will use up to two masks in the fast forwarding processor associated with each
port involved in routing of IPv6 packets. This will require restrictions on the use of policy
when proxy routing is enabled.
• All IPv6 packets ingressing or egressing a C2 port must be sent over the stack to the C3 stack
master. Limited stack bandwidth and the amount of IPv6 traffic must be carefully considered
when configuring multiple C2 ports for IPv6 routing.
• If the stack master moves from a C3 unit to a C2 unit in the stack, proxy routing will no longer
be available. To ensure that proxy routing continues to operate in the event of a failover, C3
units must be configured to be preferred when a new master is elected.
Preparing a Mixed Stack for IPv6 Proxy Routing
At least two C3 switches should be added to a C2 stack, for management redundancy.
As in any mixed C2/C3 mixed stack, the C2 firmware (release 5.01 or later) must be installed on the
C3 switches. Refer to "Issues Related to Mixed Type Stacks" on page 2‐5 for additional
information.
If you are adding the C3 switches to an existing C2 stack, make one of the C3 switches the stack
manager. For example, if the current stack manager is unit 1 and the C3 switch that you want to
become manager is unit 7:
C2(su)->set switch movemenagement 1 7
Moving stack management will unconfigure entire stack including all interfaces.
Are you sure you want to move stack management? (y/n) y
Set the management priority of the C3 switches to be higher than that of the C2 switches. For
example, if your C3 switches are units 7 and 8, and you want the unit 7 C3 switch to always
become the manager and the unit 8 C3 switch to be the backup manager:
C2(su)->set switch 7 priority 15
C2(su)->set switch 8 priority 13
Use the show switch unit command to display switch priority (Admin Management Preference).
C2(su)->show switch 7
Switch
Management Status
Hardware Management Preference
Admin Management Preference
Switch Type
Preconfigured Model Identifier
Plugged-in Model Identifier
Switch Status
Switch Family
Switch Description
Detected Code Version
Detected Code in Flash
Detected Code in Back Image
Up Time
22-2 IPv6 Proxy Routing
7
Management Switch
Unassigned
15
C3G124-48
C3G124-48
C3G124-48
OK
XGS3
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