Configuring Virtual Port Channels

Viewing A Global Type-1 Inconsistency

Viewing A Global Type-1 Inconsistency

When a global Type-1 inconsistency occurs, the vPCs on the secondary switch are brought down. The following example shows this type of inconsistency when there is a spanning-tree mode mismatch.

The example shows how to display the status of the suspended vPC VLANs on the secondary switch:

switch(config)# show vpc Legend:

(*) - local vPC is down, forwarding via vPC peer-link

vPC

domain id

:

10

Peer status

:

peer adjacency formed ok

vPC

keep-alive status

:

peer is alive

Configuration consistency status:

failed

Per-vlan consistency status

:

success

Configuration consistency reason: vPC type-1 configuration incompatible - STP

Type-2 consistency status

Mode inconsistent

: success

vPC role

: secondary

Number of vPCs configured

: 2

Peer Gateway

: Disabled

Dual-active excluded VLANs

: -

Graceful Consistency Check

: Enabled

vPC Peer-link status

---------------------------------------------------------------------

id Port Status Active vlans

------ ------ --------------------------------------------------

1 Po1 up 1-10

vPC status

----------------------------------------------------------------------------

id

Port

Status

Consistency

Reason

Active vlans

------

-----------

------

-----------

--------------------------

-----------

20

Po20

down*

failed

Global compat check failed

-

30

Po30

down*

failed

Global compat check failed

-

The example shows how to display the inconsistent status ( the VLANs on the primary vPC are not suspended) on the primary switch:

switch(config)# show vpc Legend:

(*) - local vPC is down, forwarding via vPC peer-link

vPC

domain id

:

10

Peer status

:

peer adjacency formed ok

vPC

keep-alive status

:

peer is alive

Configuration consistency status:

failed

Per-vlan consistency status

:

success

Configuration consistency reason: vPC type-1 configuration incompatible - STP Mo

de inconsistent

: success

Type-2 consistency status

vPC role

: primary

Number of vPCs configured

: 2

Peer Gateway

: Disabled

Dual-active excluded VLANs

: -

Graceful Consistency Check

: Enabled

vPC Peer-link status

---------------------------------------------------------------------

id Port Status Active vlans

------ ------ --------------------------------------------------

1 Po1 up 1-10

vPC status

----------------------------------------------------------------------------

id

Port

Status

Consistency

Reason

Active vlans

------

-----------

------

-----------

--------------------------

-----------

Cisco Nexus 5000 Series NX-OS Interfaces Configuration Guide, Release 5.2(1)N1(1)

78-26881-OL

97

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Image 109
Cisco Systems N5KC5596TFA manual Viewing a Global Type-1 Inconsistency

N5KC5596TFA specifications

The Cisco Systems N5KC5596TFA is a high-performance data center switch designed specifically for modern architectures requiring low-latency, high-bandwidth connectivity. As part of the Nexus 5000 series, the N5KC5596TFA addresses the needs of virtualized environments, cloud computing, and highly dynamic workloads, making it an essential choice for enterprises and service providers.

One of the standout features of the N5KC5596TFA is its impressive port density. The switch offers 48 10 Gigabit Ethernet (10GbE) ports and 4 40 Gigabit Ethernet (40GbE) uplinks, providing flexibility to connect a variety of devices and ensuring high throughput across the network. This port configuration is ideal for connecting multiple servers and storage devices, making it perfect for environments with significant data traffic.

The switch supports a range of advanced technologies such as Virtual Extensible LAN (VXLAN) for improving scalability and multi-tenancy in data center networks. VXLAN encapsulates Layer 2 Ethernet frames within Layer 4 UDP packets, allowing for a larger address space and effective overlay networking, which is crucial for cloud deployments.

Another notable aspect of the N5KC5596TFA is its support for Data Center Bridging (DCB), which enhances the reliability and performance of Ethernet networks. DCB features like Priority Flow Control (PFC) and Enhanced Transmission Selection (ETS) help to minimize data loss and ensure Quality of Service (QoS) for various types of traffic, including storage and regular data, which is critical in a converged infrastructure.

Security is also a priority with the N5KC5596TFA, as it comes equipped with features such as Access Control Lists (ACLs) and port security, helping to safeguard the network from unauthorized access and potential threats.

In terms of management, the switch offers integration with Cisco's Data Center Network Manager (DCNM), providing tools for monitoring, management, and automation, which simplifies operational tasks. Additionally, it supports Cisco's Application Centric Infrastructure (ACI), enabling a more comprehensive and application-focused approach to networking.

Overall, the Cisco Systems N5KC5596TFA is engineered for organizations looking to build robust, highly efficient, and secure data center environments. Its combination of high density, versatile connectivity options, and advanced networking technologies makes it a powerful solution for meeting the demands of today’s enterprise workloads.