Cisco CSR 1000v

Troubleshooting Cisco CSR 1000v VM Issues
• Verifying the Cisco CSR 1000v Hardware and VM Requirements, on page 1
• Troubleshooting Network Connectivity Issues, on page 1
• Troubleshooting VM Performance Issues, on page 2
Verifying the Cisco CSR 1000v Hardware and VM Requirements
To help troubleshoot issues with the Cisco CSR 1000v, make sure that the router is installed on supported
hardware and that the VM requirements are being met:
• Verify that the server hardware is supported by the hypervisor vendor.
If using VMware, verify that the server is listed on the VMware Hardware Compatibility List. See the
VMware documentation for more information.
• Verify that the I/O devices (for example, FC, iSCSI, SAS) being used are supported by the VM vendor.
• Verify that sufficient RAM is allocated on the server for the VMs and the hypervisor host.
If using VMware, make sure the server has enough RAM to support both the VMs and VMware ESXi.
• Verify the hypervisor version is supported by the Cisco CSR 1000v.
• Verify that the correct VM settings for the amount of memory, number of CPUs, and disk size are
configured.
• Verify that the vNICs are configured using a supported network driver. See Installation Overview.
Also see Cisco CSR 1000v Release Notes.
Troubleshooting Network Connectivity Issues
To troubleshoot network connectivity issues for the Cisco CSR 1000v, do the following:
• Verify that there is an active and unexpired license installed on the VM.
Enter the show license command. The License State should be shown as “Active, In Use”.
• Verify that the vNIC for the VMs are connected to the correct physical NIC, or to the proper vSwitch.
Troubleshooting Cisco CSR 1000v VM Issues
1

Cisco CSR 1000v Specifications

General

Product Type	Virtual Router
Form Factor	Virtual Appliance
Operating System	Cisco IOS XE
Virtualization Platform	VMware ESXi, Microsoft Hyper-V, KVM
Routing Protocols	BGP, OSPF, EIGRP, RIP, IS-IS
Security Features	Firewall, NAT, VPN
High Availability	VRRP, HSRP
Management	CLI, SNMP, NETCONF
Memory	4 GB to 16 GB
VPN Support	DMVPN, FlexVPN
QoS Features	Policing, Shaping

Summary

Verifying Cisco CSR 1000 v Hardware and VM Requirements

Server Hardware and Hypervisor Support

Verify that the server hardware is supported by the hypervisor vendor.

IO Device Support

Ensure I/O devices like FC, iSCSI, SAS are supported by the VM vendor.

Sufficient RAM Allocation

Confirm adequate server RAM for VMs and the hypervisor host.

Hypervisor Version Compatibility

Check if the hypervisor version is supported by the Cisco CSR 1000v.

Correct VM Settings

Ensure correct VM settings for memory, CPU, and disk size.

Supported Network Driver for vNICs

Verify vNICs are configured using a supported network driver.

Troubleshooting Network Connectivity Issues

Active and Unexpired License

Verify that an active and unexpired license is installed on the VM.

vNIC to Physical NICvSwitch Connection

Ensure the VM's vNIC is connected to the correct physical NIC or vSwitch.

vSwitch VLAN Configuration

Verify vSwitch VLAN configuration for virtual LANs (VLANs).

Duplicate MAC Address Check

Check for duplicate MAC addresses on static MAC or cloned VMs.

Troubleshooting VM Performance Issues

MTU Setting Verification

Verify the router's correct setting for maximum MTU.

Memory Sharing and Counters

Check memory counters, balloon, and swap for VM memory issues.

Sufficient VM Memory

Increase VM memory if insufficient, to prevent console hangs.

Impact of Other VMs on Host

Note if other VMs on the host impact CSR 1000v VM performance.

Network Packet Drop Check

Verify no network packets are dropped by checking host counters.

Troubleshooting Throughput

Maximum Throughput Level

Verify the current maximum throughput level using a specific command.

Troubleshooting Instruction Extensions

Detecting Instruction Extensions

Determine if instruction extensions are available for cryptographic transforms.

Crypto Supported Status

Check 'Crypto Supported' status to assess expected throughput.