Enterasys Networks 9034313-07 manual Preparing a Mixed Stack for IPv6 Proxy Routing, Limitations

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	7
Management Status	Management Switch
Hardware Management Preference	Unassigned
Admin Management Preference	15
Switch Type	C3G124-48
Preconfigured Model Identifier	C3G124-48
Plugged-in Model Identifier	C3G124-48
Switch Status	OK
Switch Family	XGS3
Switch Description
Detected Code Version	05.02.00.0031
Detected Code in Flash	05.02.00.0031
Detected Code in Back Image	05.01.06.0006
Up Time	0 days 0 hrs 13 mins 9 secs

23-2 IPv6 Proxy Routing