Cisco CSR1000v DriversMode
Only applicable to Cisco VIC
There are 2 modes:
•
ESXi DirectPath IO: VMXNET3
•
PCI Passthrough: enic
PCI Passthrough: enic is not supported in Cisco
IOS XE Denali 16.3.1 and higher.
Note
VM-FEX
Note: For releases Cisco IOS XE 3.16 or later, and Cisco IOS XE Denali 16.3 or later, the boot up process
may take a long time (5 minutes) when using passthrough drivers. This is due to performing DHCP during a
PXE boot. This issue can be resolved (as mentioned in resolved caveat CSCvd45286) by turning off rom bar
for Ethernet PCI devices in the Cisco CSR 1000v xml file; for example:
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x85' slot='0x00' function='0x0'/>
</source>
<rom bar='off'/> <------ Add this line to xml file
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</hostdev>
Limitations
The following table describes the limitations that apply to I/O modes.
Table 4: I/O Mode Limitations
LimitationsMode/Driver
•
Interoperability with another NIC: If enic is connected to
other NIC (for example, Intel NIC) and then that NIC is
used for other CSR VM (Para virtual or Passthrough), traffic
will not pass through if enic is configured with VLAN.
•
If a VLAN is configured, the other NIC receives a VLAN
packet with VLAN id of 0.
•
Jumbo packet support: In this release, jumbo packet (MTU
> 1518) is not supported.
•
CDP is not supported.
•
HSRP standby cannot ping the HSRP group address
PCI passthrough (enic)
Cisco CSR 1000v Series Cloud Services Router Software Configuration Guide
23
Cisco CSR 1000v Series Cloud Services Router Overview
Hypervisor Support
To Next Page
Loading...
Need help?
General
