Configuring BCBs for Inter-VSN Routing

Inter-VSN allows you to route between IP networks on Layer 2 VLANs with different I-SIDs. Inter-VSN routing is typically used only when you have to extend a VLAN as a Layer 2 Virtual Services Network (VSN) for applications such as vMotion. Use IP Shortcuts to route traffic. You must configure both the Backbone Edge Bridges (BEBs) and the Backbone Core Bridge (BCB).

Note

To enable inter-VSN routing, you must configure the IP interface where the routing instance exists.

Before you begin

You must configure the required SPBM and IS-IS infrastructure.
You must configure the Backbone Edge Bridges (BEBs) containing the VSNs you want to route traffic between. For more information, see Configure BEBs for Inter-VSN Routing.

About this task

Follow the procedures below to configure the Backbone Core Bridge (BCB) for inter-VSN routing.

Procedure

On the Backbone Core Bridge (BCB), create a VRF. In the navigation pane, expand Configuration > IP.
Click VRF.
Click Insert.
Specify the VRF ID.
Name the VRF instance.
Configure the other parameters as required.
Click Insert.
Create a VLAN to associate with each VSN. In the navigation pane, expand Configuration > VLAN.
Click VLANs.
In the Basic tab, click Insert.
In the Id box, enter an unused VLAN ID, or use the ID provided.
In the Name box, type the VLAN name, or use the name provided.
In the Color Identifier box, click the down arrow and choose a color from the list, or use the color provided.
In the Type box, select byPort.
In the PortMembers box, click the (...) button.
Click on the ports to add as member ports.

The ports that are selected are recessed, while the nonselected ports are not recessed. Port numbers that are dimmed cannot be selected as VLAN port members.
Click OK.
Click Insert.
Collapse the VLANs tab.

The VLAN is added to the Basic tab.
Associate the VLAN with an I-SID. In the navigation pane, expand Configuration > VLAN.
Click VLANs.
In the VLANs tab, click the Advanced tab.
In the I-sid box, specify the I-SID to associate with the VLAN.
Click Apply.
Configure a circuitless IP interface (CLIP). In the navigation pane, expand Configuration > IP.
Click IP.
Click the Circuitless IP tab.
Click Insert.
In the Interface field, assign a CLIP interface number.
Enter the IP address.
Enter the network mask.
Click Insert.

VRF field descriptions

Use the data in the following table to help you use the VRF tab.


Name	Description
Id	Specifies the ID number of the VRF instance. VRF ID 0 is reserved for the GlobalRouter.
Name	Names the VRF instance.
ContextName	Identifies the VRF. The SNMPv2 Community String or SNMPv3 contextName denotes the VRF context and is used to logically separate the MIB module management.
TrapEnable	Enables the VRF to send VRF Lite-related traps (VrfUp and VrfDown). The default is true.
MaxRoutes	Configures the maximum number of routes allowed for the VRF. The maximum value varies per platform. See Fabric Engine Release Notes for platform-specific scaling information. The default value is 10000.
MaxRoutesTrapEnable	Enables the generation of the VRF Max Routes Exceeded traps. The default is true.

Advanced field descriptions

Use the data in the following table to use the Advanced tab.


Name	Description
Id	Specifies the VLAN ID in the range of 1 to 4059. By default, VLAN IDs 1 to 4059 are configurable and the system reserves VLAN IDs 4060 to 4094 for internal use. On switches that support the vrf-scaling and spbm-config-mode boot configuration flags, if you enable these flags, the system also reserves VLAN IDs 3500 to 3998. VLAN ID 1 is the default VLAN and you cannot create or delete VLAN ID 1.
Name	Specifies the name of the VLAN.
IfIndex	Specifies the logical interface index assigned to the VLAN.
Type	Specifies the type of VLAN: byPort byProtocolId spbm-bvlan private
Isid	Specifies the I-SID number assigned to a customer VLAN (C-VLAN). The range is 0 – 16777215. The default value is 0, which indicates that no I-SID is assigned.
Isid Name Note: This field does not apply to all hardware platforms.	Specifies the name of the I-SID.
ProtocolId	Specifies the network protocol for protocol-based VLANs. If the VLAN type is not protocol-based, None is displayed in the Basic tab ProtocolId field.
AgingTime	Specifies the timeout period for dynamic VLAN membership. A potential VLAN port is made ACTIVE after it receives a packet that matches the VLAN; if no such packet is received for AgingTime seconds, the port is no longer active. The default is 600.
MacAddress	Specifies the MAC address assigned to the virtual router interface for this VLAN. This field is relevant only after the VLAN is configured for routing. This MAC address is used as the Source MAC in routed frames and ARP replies.
Vlan Operation Action	Performs an operation on the VLAN. The values are: none flushMacFdb: Configures action to flushMacFdb. This action removes the learned MAC addresses from the forwarding database for the selected VLAN. flushArp: Configures action to flushArp. This action removes the ARP entries from the address table for the selected VLAN. flushIp: Configures action to flushIp. This action removes the learned IP addresses from the forwarding table for the selected VLAN. flushDynMemb: Configures action to flushDynMemb. This action removes port members not configured as static from the list of active port members of a policy-based VLAN and removes MAC addresses learned on those ports. all: Configures action to all. This action performs all the supported actions; it does not perform the Snoop-related actions. The default is none.
Result	Specifies the result code after you perform an action.
NlbMode	Enables or disables Microsoft Network Load Balancing (NLB) operations on the VLAN. The default is disabled.
SpbMulticast	Enables or disables Multicast over Fabric Connect. The default is disabled.
SpbPimGatewayMulticast	Enables or disables SPB-PIM Gateway Multicast on a VLAN. The default is disabled.
RmonEnable	Enables or disables Remote Monitoring (RMON) on the interface. The default is disabled.
Ipv6FhsSnoopDhcpEnable	Enables or disables IPv6 dhcp snooping on a VLAN. The default is disabled.
Ipv6FhsNDInspectionEnable	Enables or disables neighbor discovery (ND) inspection on a VLAN. The default is disabled.
DvrEnable	Enables or disables DvR on a VLAN that is configured on the DvR Controller. The default is disabled. Note: You must enable DvR on every VLAN that is configured on a DvR Controller.
DvrGwIpv4Addr	Specifies the DvR gateway IPv4 address for a VLAN. Important: Ensure that you configure the same gateway IPv4 address on all Controllers in the DvR domain that belong to a VLAN.
DvrGwIpv4OneIp	Enables or disables the DvR One IP for a VLAN. The default is disabled (false).

Circuitless IP field descriptions

Use the data in the following table to use the Circuitless IP tab.


Name	Description
Interface	Specifies the number assigned to the interface, from 1 to 256.
Ip Address	Specifies the IP address of the CLIP.
Net Mask	Specifies the network mask.

Basic Field Descriptions

Use the data in the following table to use the Basic tab.


Name	Description
Id	Specifies the VLAN ID in the range of 2 to 4059. VLAN ID 1 is the default VLAN and you cannot create or delete VLAN ID 1. By default, the system reserves VLAN IDs 4060 to 4094 for internal use. On switches that support the vrf-scaling and spbm-config-mode boot configuration flags, if you enable these flags, the system also reserves VLAN IDs 3500 to 3998.
Name	Specifies the name of the VLAN.
IfIndex	Specifies the logical interface index assigned to the VLAN.
Color Identifier	Specifies a proprietary color scheme to associate a color with the VLAN. Color does not affect how frames are forwarded.
Type	Specifies the type of VLAN: byPort byProtocolId spbm-bvlan private
MstpInstance	Identifies the MSTP instance.
VrfId	Indicates the Virtual Router to which the VLAN belongs.
VrfName	Indicates the name of the Virtual Router to which the VLAN belongs.
PortMembers	Specifies the slot/port of each VLAN member. The system displays the sub-port only for channelized ports.
ActiveMembers	Specifies the slot/port of each VLAN member. The system displays the sub-port only for channelized ports.
StaticMembers	Specifies the slot/port of each static member of a policy-based VLAN. The system displays the sub-port only for channelized ports.
NotAllowToJoin	Specifies the slot/ports that are never allowed to become a member of the policy-based VLAN. The system displays the sub-port only for channelized ports.
ProtocolId	Specifies the network protocol for protocol-based VLANs. This value is taken from the Assigned Numbers of remote function call (RFC). If the VLAN type is port-based, none is displayed in the Basic tab ProtocolId field.
AgingTime	Specifies the timeout period, in seconds, to age out dynamic members of this VLAN. This field only applies to policy-based VLANs. The default is 600.

Note

If you or another user changes the name of an existing VLAN using the VLAN Basic tab (or using CLI), the system does not display the new name initially in EDM. To display the updated name, perform one of the following actions:

Refresh your browser to reload EDM.
Log out of EDM and log in again to restart EDM.
Click Refresh in the VLAN Basic tab toolbar. If the system displays the old VLAN name in other tabs, click Refresh on those tabs as well.