Configuring Network-Related Settings

CIMC NIC Configuration

CIMC NICs

Two NIC modes are available for connection to the CIMC.

NIC Mode

  • Dedicated—A connection to the CIMC is available through the management Ethernet port or ports.

  • Shared LOM—A connection to the CIMC is available through the LAN On Motherboard (LOM) Ethernet host ports and through the router's PCIe and MGF interfaces.


    Note
    In shared LOM mode, all host ports must belong to the same subnet.

The following example shows the link state: 

server /cimc/network # show link-state detail
Interface                      State
------------------------------ --------------------
Console                        Link Detected
TE1                            No Link Detected
GE2                            No Link Detected
TE3                            No Link Detected
TE4                            No Link Detected
Dedicated                      Link Detected

The following example shows the LOM MAC list:

Server /cimc/network # show lom-mac-list
Interface                      MAC Address
------------------------------ --------------------
Console                        1C:D1:E0:26:05:A6
TE1                            1C:D1:E0:26:05:A7
GE2                            1C:D1:E0:26:05:AA
TE3                            1C:D1:E0:26:05:A8
TE4                            1C:D1:E0:26:05:A9

Configuring CIMC NICs

Use this procedure to set the NIC mode and Interface.

Before you begin

You must log in as a user with admin privileges to configure the NIC.

Procedure

  Command or Action Purpose

Step 1

Server # scope cimc

Enters CIMC command mode.

Step 2

Server /cimc # scope network

Enters CIMC network command mode.

Step 3

Server /cimc/network # set mode {dedicated | shared_lom}

Sets the NIC mode to one of the following:

  • dedicated: The management Ethernet port is used to access the CIMC.

  • shared LOM mode: The LAN On Motherboard (LOM) Ethernet host ports are used to access the CIMC.

    Note

     

    In shared LOM mode, all host ports must belong to the same subnet.

Step 4

Server /cimc/network # set interface {console | te1 | ge2 | te3 | te4}

Sets the NIC interface to one of the following:

  • console: Internal interface, which is used to connect either the router’s PCIe interface to the E-Series server.

  • te1: Internal interface, which is used to access the CIMC over a high-speed backplane switch.

  • ge2: External interface, which can be used as a primary interface or as a backup interface.

  • te3: External interface, which can be used as a primary interface or as a backup interface.

  • te4: External interface, which can be used as a primary interface or as a backup interface.

Step 5

Server /cimc/network # commit

Commits the transaction to the system configuration.

Note

 

The available NIC mode and NIC redundancy mode options may vary depending on your platform. If you select a mode not supported by your server, an error message displays when you save your changes.

Example

This example configures the CIMC network interface: 

Server# scope cimc
Server /cimc # scope network
Server /cimc/network # set mode shared_lom
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# set interface ge2
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# commit
Changes to the network settings will be applied immediately.
You may lose connectivity to the Cisco IMC and may have to log in again.
Do you wish to continue? [y/N] y
Server /cimc/network #

Configuring Common Properties

Use common properties to describe your server.

Before you begin

You must log in as a user with admin privileges to configure common properties.

Procedure

  Command or Action Purpose

Step 1

Server# scope cimc

Enters CIMC command mode.

Step 2

Server /cimc # scope network

Enters CIMC network command mode.

Step 3

Server /cimc/network # set hostname host-name

Specifies the name of the host.

Step 4

Server /cimc/network # commit

Commits the transaction to the system configuration.

Example

This example configures the common properties:

Server# scope cimc
Server /cimc # scope network
server /cimc/network # set hostname Server
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
server /cimc/network *# commit
Changes to the network settings will be applied immediately.
You may lose connectivity to the Cisco IMC and may have to log in again.
Do you wish to continue? [y/N] y
Server /cimc/network #

Configuring IPv4

Before you begin

You must log in as a user with admin privileges to configure IPv4 network settings.

Procedure

  Command or Action Purpose

Step 1

Server# scope cimc

Enters CIMC command mode.

Step 2

Server /cimc # scope network

Enters CIMC network command mode.

Step 3

Server /cimc/network # set dhcp-enabled {yes | no}

Selects whether the CIMC uses DHCP.

Note

 

If DHCP is enabled, it is recommended that the DHCP server be configured to reserve a single IP address for the CIMC. If the CIMC is reachable through multiple ports on the server, the single IP address must be reserved for the full range of MAC addresses of those ports.

Step 4

Server /cimc/network # set v4-addr ipv4-address

Specifies the IP address for the CIMC.

Step 5

Server /cimc/network # set v4-netmask ipv4-netmask

Specifies the subnet mask for the IP address.

Step 6

Server /cimc/network # set v4-gateway gateway-ipv4-address

Specifies the gateway for the IP address.

Step 7

Server /cimc/network # set dns-use-dhcp {yes | no}

Selects whether the CIMC retrieves the DNS server addresses from DHCP.

Step 8

Server /cimc/network # set preferred-dns-server dns1-ipv4-address

Specifies the IP address of the primary DNS server.

Step 9

Server /cimc/network # set alternate-dns-server dns2-ipv4-address

Specifies the IP address of the secondary DNS server.

Step 10

Server /cimc/network # commit

Commits the transaction to the system configuration.

Step 11

Server /cimc/network # show [detail]

(Optional) Displays the IPv4 network settings.

Example

This example configures and displays the IPv4 network settings:

Server# scope cimc
Server /cimc # scope network
Server /cimc/network # set dns-use-dhcp no
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# set dhcp-enabled no
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# set v4-addr 10.20.30.11
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# set v4-gateway 10.20.30.1
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# set v4-netmask 255.255.248.0
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# set preferred-dns-server 192.168.30.31
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# set alternate-dns-server 192.168.30.32
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# commit
Changes to the network settings will be applied immediately.
You may lose connectivity to the Cisco IMC and may have to log in again.
Do you wish to continue? [y/N] y
Server /cimc/network #

Server /cimc/network # show detail
Network Setting:
IPv4 Enabled: yes
IPv4 Address: 10.20.30.11
IPv4 Netmask: 255.255.248.0
IPv4 Gateway: 10.20.30.1
DHCP Enabled: no
DDNS Enabled: yes
DDNS Update Domain:
DDNS Refresh Interval(0-8736 Hr): 0
Obtain DNS Server by DHCP: no
Preferred DNS: 192.168.30.31
Alternate DNS: 192.168.30.32
IPv6 Enabled: no
IPv6 Address: ::
IPv6 Prefix: 64
IPv6 Gateway: ::
IPv6 Link Local: ::
IPv6 SLAAC Address: ::
IPV6 DHCP Enabled: no
IPV6 Obtain DNS Server by DHCP: no
IPV6 Preferred DNS: ::
IPV6 Alternate DNS: ::
VLAN Enabled: no
VLAN ID: 1
VLAN Priority: 0
Port Profile:
Hostname: Server
MAC Address: 1C:D1:E0:26:0F:81
NIC Mode: shared_lom
NIC Redundancy: none
NIC Interface: ge2
VIC Slot: 0

Note

This configuration can take a few minutes to reflect in the show detail command.

Configuring IPv6

Before you begin

You must log in as a user with admin privileges to configure IPv6 network settings.

Procedure

  Command or Action Purpose

Step 1

Server# scope cimc

Enters CIMC command mode.

Step 2

Server /cimc # scope network

Enters CIMC network command mode.

Step 3

Server /cimc/network # set v6-dhcp no

Disables DHCP.

Step 4

Server /cimc/network # set v6-enabled yes

Enables the IPv6 addressing.

Step 5

Server /cimc/network # set v6-addr ipv6-address

Specifies the IP address for the CIMC.

Step 6

Server /cimc/network # set v6-gateway gateway-ipv6address

Specifies the gateway for the IP address.

Step 7

Server /cimc/network # commit

Commits the transaction to the system configuration.

Step 8

Server /cimc/network # show [detail]

(Optional) Displays the IPv4 and IPv6 network settings.

Example

This example configures and displays the IPv6 network settings:

Server# scope cimc
Server /cimc # scope network
Server /cimc/network # set v6-dhcp-enabled no
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Please set "v6-enabled" to "yes" before you commit
Otherwise your setting for "v6-dhcp-enabled" will not be reflected
Server /cimc/network *# set v6-enabled yes
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Warning: You have chosen to change IPv6 property without a valid IPv6 address.
Server /cimc/network *# set v6-addr 2001:db8:101:f101:f2f7::14
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# set v6-gateway 2001:db8:101:f101:f2f7::1
WARNING: Changing this configuration may cause the Router network configuration to be out of sync.
You may still commit your changes, but it is recommended that changes be done on the Router.
Server /cimc/network *# commit
Changes to the network settings will be applied immediately.
You may lose connectivity to the Cisco IMC and may have to log in again.
Do you wish to continue? [y/N] y
Server /cimc/network #

Server /cimc/network # show detail
Network Setting:
IPv4 Enabled: yes
IPv4 Address: 10.20.30.11
IPv4 Netmask: 255.255.248.0
IPv4 Gateway: 10.20.30.1
DHCP Enabled: no
DDNS Enabled: yes
DDNS Update Domain:
DDNS Refresh Interval(0-8736 Hr): 0
Obtain DNS Server by DHCP: no
Preferred DNS: 192.168.30.31
Alternate DNS: 192.168.30.32
IPv6 Enabled: yes
IPv6 Address: 2001:db8:101:f101:f2f7::14
IPv6 Prefix: 64
IPv6 Gateway: 2001:db8:101:f101:f2f7::1
IPv6 Link Local: fe80::1ed1:e0ff:fe26:f81
IPv6 SLAAC Address: 6666:1000::1ed1:e0ff:fe26:f81
IPV6 DHCP Enabled: no
IPV6 Obtain DNS Server by DHCP: no
IPV6 Preferred DNS: ::
IPV6 Alternate DNS: ::
VLAN Enabled: no
VLAN ID: 1
VLAN Priority: 0
Port Profile:
Hostname: Server
MAC Address: 1C:D1:E0:26:0F:81
NIC Mode: shared_lom
NIC Redundancy: none
NIC Interface: ge2
VIC Slot: 0
Server /cimc/network #

Configuring the Server VLAN

Before you begin

You must be logged in as admin to configure the server VLAN.

Procedure

  Command or Action Purpose

Step 1

Server# scope cimc

Enters CIMC command mode.

Step 2

Server /cimc # scope network

Enters CIMC network command mode.

Step 3

Server /cimc/network # set vlan-enabled {yes | no}

Selects whether the CIMC is connected to a VLAN.

Step 4

Server /cimc/network # set vlan-id id

Specifies the VLAN number.

Step 5

Server /cimc/network # set vlan-priority priority

Specifies the priority of this system on the VLAN.

Step 6

Server /cimc/network # commit

Commits the transaction to the system configuration.

Step 7

Server /cimc/network # show [detail]

(Optional) Displays the network settings.

Example

This example configures the server VLAN:

Server# scope cimc
Server /cimc # scope network
Server /cimc/network # set vlan-enabled yes Server /cimc/network *# set vlan-id 10 Server /cimc/network *# set vlan-priority 32 Server /cimc/network *# commit
Server /cimc/network # show detail
Network Setting:
    IPv4 Enabled: yes
     IPv4 Address: 10.20.30.11
     IPv4 Netmask: 255.255.248.0
     IPv4 Gateway: 10.20.30.1 
     DHCP Enabled: no
     DDNS Enabled: yes
     DDNS Update Domain:
     DDNS Refresh Interval(0-8736 Hr): 0
     Obtain DNS Server by DHCP: no
     Preferred DNS: 0.0.0.0
     Alternate DNS: 0.0.0.0
     IPv6 Enabled: no
     IPv6 Address: ::
     IPv6 Prefix: 64
     IPv6 Gateway: ::
     IPv6 Link Local: ::
     IPv6 SLAAC Address: ::
     IPV6 DHCP Enabled: no
     IPV6 Obtain DNS Server by DHCP: no
     IPV6 Preferred DNS: ::
     IPV6 Alternate DNS: ::
     VLAN Enabled: yes
     VLAN ID: 10
     VLAN Priority: 32
     Port Profile:
     Hostname: Server
     MAC Address: 1C:D1:E0:26:05:A5
     NIC Mode: dedicated
     NIC Redundancy: none
     NIC Interface:
     VIC Slot: 0
Server /cimc/network #

Network Security Configuration

Network Security

The CIMC uses IP blocking as network security. IP blocking prevents the connection between a server or website and certain IP addresses or ranges of addresses. IP blocking effectively bans undesired connections from those computers to a website, mail server, or other Internet servers.

IP banning is commonly used to protect against denial of service (DoS) attacks. The CIMC bans IP addresses by setting up an IP blocking fail count.

Configuring Network Security

Configure network security if you want to set up an IP blocking fail count.

Before you begin

You must log in as a user with admin privileges to configure network security.

Procedure

  Command or Action Purpose

Step 1

Server# scope cimc

Enters CIMC command mode.

Step 2

Server /cimc # scope network

Enters CIMC network command mode.

Step 3

Server /cimc/network # scope ipblocking

Enters IP blocking command mode.

Step 4

Server /cimc/network/ipblocking # set enabled {yes | no}

Enables or disables IP blocking.

Step 5

Server /cimc/network/ipblocking # set fail-count fail-count

Sets the number of times a user can attempt to log in unsuccessfully before the system locks that user out for a specified length of time.

The number of unsuccessful login attempts must occur within the time frame specified in the IP Blocking Fail Window field.

Enter an integer between 3 and 10.

Step 6

Server /cimc/network/ipblocking # set fail-window fail-seconds

Sets the length of time, in seconds, in which the unsuccessful login attempts must occur in order for the user to be locked out.

Enter an integer between 60 and 120.

Step 7

Server /cimc/network/ipblocking # set penalty-time penalty-seconds

Sets the number of seconds the user remains locked out if they exceed the maximum number of login attempts within the specified time window.

Enter an integer between 300 and 900.

Step 8

Server /cimc/network/ipblocking # commit

Commits the transaction to the system configuration.

Example

This example configures IP blocking:

Server# scope cimc
Server /cimc # scope network
Server /cimc/network # scope ipblocking
Server /cimc/network/ipblocking # set enabled yes 
Server /cimc/network/ipblocking *# set fail-count 5 
Server /cimc/network/ipblocking *# set fail-window 90 
Server /cimc/network/ipblocking *# set penalty-time 600 
Server /cimc/network/ipblocking *# commit
Server /cimc/network/ipblocking #

Configuring IP Filtering

Before you begin

You must log in with admin privileges to perform this task.

Procedure

  Command or Action Purpose

Step 1

Server# scope cimc

Enters CIMC command mode.

Step 2

Server /cimc # scope network

Enters CIMC network command mode.

Step 3

Server /cimc/network # scope ipfiltering

Enters the IP filtering command mode.

Step 4

Server /cimc/network/ipfiltering # set enabled {yes | no}

Enables or disables IP filtering. At the prompt, enter y to enable IP filtering.

Step 5

Server /cimc/network/ipfiltering # set filter-1 IPv4 or IPv6 address or a range of IP addresses

You can set up to 20 IP filters. You can assign an IPv4 or IPv6 IP address, or a range of IP addresses.

Step 6

Server /cimc/network/ipfiltering # commit

Commits the transaction to the system configuration.

Step 7

Server /cimc/network/nam # showdetail

(Optional) Displays the status of IP filtering.

Example

This example configures IP filtering:

Server /cimc/network # scope ipfiltering
Server /cimc/network/ipfiltering # set enabled yes
This will enable IP Filtering
Do you wish to continue? [y/N] y
Server /cimc/network/ipfiltering *# commit
Changes to the ipfiltering will be applied immediately.
You may lose connectivity to the Cisco IMC and may have to log in again.
Do you wish to continue? [y/N] y
Server /cimc/network/ipfiltering # set filter-1 1.1.1.1-255.255.255.255
Server /cimc/network/ipfiltering *# set filter-2 10.10.10.10
Server /cimc/network/ipfiltering *# set filter-3 2001:db8:101:f101:f2f7::15
Server /cimc/network/ipfiltering *# commit
Changes to the ipfiltering will be applied immediately.
You may lose connectivity to the Cisco IMC and may have to log in again.
Do you wish to continue? [y/N] y
Server /cimc/network/ipfiltering #

Server /cimc/network/ipfiltering # show detail
IP Filter Service Settings:
Enabled: yes
Filter 1: 1.1.1.1-255.255.255.255
Filter 2: 10.10.10.10
Filter 3: 2001:db8:101:f101:f2f7::15
Filter 4:
Filter 5:
Filter 6:
Filter 7:
Filter 8:
Filter 9:
Filter 10:
Filter 11:
Filter 12:
Filter 13:
Filter 14:
Filter 15:
Filter 16:
Filter 17:
Filter 18:
Filter 19:
Filter 20:
Server /cimc/network/ipfiltering #

NTP Settings Configuration

NTP Settings

By default, when CIMC is reset, it synchronizes the time with the host. With the introduction of the Network Time Protocol (NTP) service, you can configure CIMC to synchronize the time with an NTP server. The NTP server does not run in CIMC by default. You must enable and configure the NTP service by specifying the IP or DNS address of at least one server, or a maximum of four servers, that function as NTP servers or time source servers. When you enable the NTP service, CIMC synchronizes the time with the configured NTP server. The NTP service can be modified only through CIMC.


Note

To enable the NTP service, it is recommended to specify the IP address of the server rather than the DNS address.

Configuring NTP Settings

Before you begin

You must log in with admin privileges to perform this task.

Procedure

  Command or Action Purpose

Step 1

Server# scope cimc

Enters CIMC command mode.

Step 2

Server /cimc # scope network

Enters CIMC network command mode.

Step 3

Server /cimc/network # scope ntp

Enters NTP command mode.

Step 4

Server /cimc/network/ntp # set enabled {yes | no}

Enables or disables the NTP service.

Step 5

Server /cimc/network/ntp # set [server-1 | server-2 | server-3 | server-4] ip-address or domain-name

Configures the IP address or domain name for the specified server to act as an NTP server or the time source server.

You can configure a maximum of four servers.

Step 6

Server /cimc/network/ntp # show detail

(Optional) Displays whether the NTP service is enabled and the IP address or domain name of the NTP servers.

Example

This example configures NTP settings: 

Server# scope cimc
Server /cimc # scope network
Server /cimc/network # scope ntp
Server /cimc/network/ntp # set enabled yes
Warning: IPMI Set SEL Time command will be disabled if NTP is enabled.
Do you wish to continue? [y/N] y
Server /cimc/network/ntp *# set server-1 10.50.171.9
Server /cimc/network/ntp *# set server-2 time.cisco.com
Server /cimc/network/ntp *# commit
Server /cimc/network/ntp #

Server /cimc/network/ntp # show detail
NTP Service Settings:
Enabled: yes
Server 1: 10.50.171.9
Server 2: time.cisco.com
Server 3:
Server 4:
Status: unsynchronised
Server /cimc/network/ntp #