In this section:
Prerequisites for SBC Creation
Ensure the following before creating the SBCs:
- Four VPCs (each containing a subnet) are created for the mgmt, HA, PKT0, and PKT1 interfaces. For more information, refer to Configure VPC Networks.
- For each SBC instance, a Static External IP address is reserved. For more information, refer to the section "Reserve Static External IP Addresses" of the page Configure VPC Networks.
- Delete any "sshKeys" or "ssh-key" field in the global Metadata. For more information, see 327757044.
For a Standalone configuration:
- A Static External IP address is reserved for PKT0 and PKT1. For more information, refer to the section "Reserve Static External IP Addresses" of the page Configure VPC Networks.
Ensure the following before creating an HA pair with HFE setup:
- Two static internal IP address are created in the subnet used for the HA interfaces (for each SBC). For more information, refer to the section "Reserve Static External IP Addresses" of the page Configure VPC Networks.
- A service account used for the SBCs and HFEs are created. For more information, refer to GCP Service Account Permissions.
- The HFE node instance is created. For more information, refer to Configure HFE Nodes in GCP.
Manual SBC Instance Creation
To create an SBC instance, follow the steps given below. Any extra configuration for the HFE environment setup is mentioned specifically.
- In the GCP console, go to Compute Engine > VM instances.
Click Create to open the Create an instance page.
Create an instance
- Enter a name in the Name field.
- Select the Region that contains the subnets created for the SBCs.
- Select an appropriate Zone.
- In the Machine type, select appropriate size. For more information, refer to Instance Types Supported for SBC SWe in GCP.
Select the Boot disk option, and click Change to open the Boot disk panel.
Boot disk
- Select Custom Images.
- Select the account containing the image (if not the current), and select the SBC image.
- Select SSD persistent disk as the Boot disk type with the disk size as ≥ 65GB.
- Click Select.
- Under Identity and API access:
- To create a Standalone setup, click Allow full access to all Cloud APIs.
- To create an HA/HFE setup: select the service account created in GCP Service Account Permissions.
Click on Management, security, disks, networking, sole tenancy. The tabs expand.
Expanded tabs
- Click Management.
- In the Metadata section, enter the user data with Key set as "user-data". For more information, see 327757044.
- Click Security.
- Click Block project-wide SSH keys.
- Enter a public SSH key for the
linuxadminuser. For more information, see 327757044. - Click Networking.
- Set Network Tags:
- For HFE, add in the "Instance tag" for routes for PKT0 and PKT1 (created during HFE node setup). For more information, see the section "Google Network Routes" of the page Configure HFE Nodes in GCP.
For Standalone, leave it blank.
Network Tags
- Create the SBC Network interfaces in the following order:
- Mgmt:
- Select the VPC created for the mgmt.
- Select the Subnetwork created for mgmt.
- Set the Primary internal IP as "Ephemeral (Automatic)".
Set External IP as one of the static External IPs created earlier.
Network interfaces
- HA:
- Select the VPC created for HA.
- Select the Subnetwork created for HA.
- Set the Primary internal IP:
- For HFE, set as one of the primary internal IPs created earlier.
- For Standalone, set as "Ephemeral (Automatic)".
Set the External IP as "None".
Network interfaces (continued)
- PKT0:
- Select the VPC created for PKT0 (and nic3 for HFE node).
- Select the Subnetwork created for PKT0 (and nic3 for HFE node).
- Set the Primary internal IP as "Ephemeral (Automatic)".
- Add an alias IP:
- Click Show alias IP ranges
- Set the Subnet range as "Primary"
Set Alias IP range as "/32".
NoteSetting the Alias IP range as "/32" assigns an available IPv4 address from the subnet.
- Set External IP:
- For HFE, set as "None".
For Standalone, set as one of the static External IPs created earlier.
External IP
- PKT1:
- Select the VPC created for PKT1 (and nic4 for HFE node).
- Select the Subnetwork created for PKT1 (and nic4 for HFE node).
- Set the Primary internal IP as "Ephemeral (Automatic)".
- Add an alias IP:
- Click Show alias IP ranges.
- Set Subnet range as "Primary".
Set Alias IP range as "/32".
NoteSetting the Alias IP range as "/32" assigns an available IPv4 address from the subnet.
- Set External IP:
- For HFE, set as "None".
For Standalone, set as one of the static External IPs created earlier.
PKT1 External IP
- Mgmt:
For Standalone, click CREATE.
WarningIn a HFE environment, ensure that manual creation of the SBCs needs is performed exactly as described below, failing which the SBC CEs cannot collect necessary information about peers.
- For HFE:
- Repeat steps 1 - 21 for the standby instance in a new tab.
- Click CREATE in for the Active instance.
- Click CREATE in Standby instance.
- Stop and start the HFE node instance, to allow it to retrieve the SBC instance's information.
Note
If you create an Active instance that comes up before creating the Standby instance, restart both instances and clear the databases.
Warning
To avoid disk corruption, do not use the GCP console Reset option to restart an instance.
Public Cloud Security
To enhance the security of the SBC in the public cloud space, certain restrictions are imposed.
SSH Key Login Only
By default, only the linuxadmin user (used for accessing the Linux shell) and the admin user (default user for accessing the SBC CLI) support SSH key login. The SSH keys are entered using the following methods:
- For linuxadmin:
- Within the instance creation, under the 'Security' tab, add the public ssh key in the form:
<ssh-rsa ...> linuxadmin. The format informs the cloud-init that the key is for linuxadmin.
Example
- Within the instance creation, under the 'Security' tab, add the public ssh key in the form:
- For admin:
- The public key is entered using the SBC user-data.
- This allows to maintain consistency between public cloud platforms.
Note
You can retrieve the Public SSH keys on Linux by executing the following command: ssh-keygen -y -f <privateKeyFile>.
Note
Ribbon recommends using separate SSH keys for every user.
Increased Permissions for linuxadmin
By default, linuxadmin allows very little access at the OS level. For simple debugging, use the sbcDiagnostic command to run sysdumps and check the application status.
When a valid SBX license is installed, linuxadmin gains full sudo permissions.
User Data Format
To prevent execution of unauthorized commands on the SBC, the user-data only in a valid json format is allowed. If the SBC detects any user-data in an invalid json format, it shuts down immediately.
User Data
Specify the user data in pure json format.
Note
This example below is for HFE 2.0.
{
"CERole" : "ACTIVE",
"ReverseNatPkt0" : "True",
"ReverseNatPkt1" : "True",
"CEName" : "vsbc1",
"SystemName" : "vsbcSystem",
"PeerCEName" : "vsbc2",
"PeerCEHa0IPv4Address": "10.54.25.180",
"ClusterIp" : "10.54.25.180",
"SbcPersonalityType": "isbc",
"SbcHaMode": "1to1",
"Mgt0Prefix": "24",
"ThirdPartyCpuAlloc" : "0",
"ThirdPartyMemAlloc" : "0" ,
"AdminSshKey" : "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCJnrFMr/RXJD3rVLMLdkJBYau+lWQ+F55Xj+KjunVBtw/zXURV38QIQ1zCw/GDO2CZTSyehUeiV0pi2moUs0ZiK6/TdWTzcOP3RCUhNI26sBFv/Tk5MdaojSqUc2NMpS/c1ESCmaUMBv4F7PfeHt0f3PqpUsxvKeNQQuEZyXjFEwAUdbkCMEptgaroYwuEz4SpFCfNBh0obUSoX5FNiNO/OyXcR8poVH0UhFim0Rdneo7VEH5FeqdkdGyZcTFs7A7aWpBRY3N8KUwklmNSWdDZ9//epEwgaF3m5U7XMd4M9zHURF1uQ/Nc+aiyVId9Mje2EU+nh6npaw/tEOPUiC1v",
"PeerInstanceName": "iac1-single-sbc1-single-hfe-single-sbc2",
"HfeInstanceName": "iac1-single-sbc1-single-hfe-single-sbc-hfe"
}
The following table describes all of the keys required in the SBC user-data. The Required By column specifies which type of setup requires this key.
| Key | Allow Values | Required by | Description |
|---|---|---|---|
CERole | ACTIVE/STANDBY | HFE | Defined role for the SBC instance. One must be configured as ACTIVE the other STANDBY |
ReverseNatPkt0 | True/False | HFE | Requires True for HFE |
ReverseNatPkt1 | True/False | HFE | Requires True for HFE |
CEName | N/A | Standalone and HFE | This specifies the actual CE name of the SBC instance. For more information, refer to System and Instance Naming in SBC SWe N:1 and Cloud-Based Systems. CEName Requirements:
|
SystemName | N/A | Standalone and HFE | This specifies the System Name of the SBC instances. For more information, refer to System and Instance Naming in SBC SWe N:1 and Cloud-Based Systems. SystemName Requirements:
|
PeerCEName | N/A | HFE | CEName for the peer instance (ensure it matches peer CE's CEName in the user-data). |
PeerCEHa0IPv4Address | xxx.xxx.xxx.xxx | HFE | Private IPv4 address of the HA interface on the peer instance. |
ClusterIp | xxx.xxx.xxx.xxx | HFE | Private IPv4 address of the HA interface on the peer instance. |
SbcPersonalityType | isbc | Standalone and HFE | The name of the SBC personality type for this instance. Currently Ribbon supports only I-SBC. |
SbcHaMode | 1to1 | HA | The mode of SBC management. |
Mgt0Prefix | N/A | Standalone and HFE | The CIDR prefix for the Mgmt subnet. |
ThirdPartyCpuAlloc | 0-4 | N/A | Number of CPUs allocated to non-Ribbon applications. This key is optional. Restrictions:
|
ThirdPartyMemAlloc | 0-4096 | N/A | Amount of memory (in MB) allocated to non-Ribbon applications. This key is optional. Restrictions:
|
AdminSshKey | ssh-rsa ... | Standalone and HFE | Public SSH Key to access the admin user. See SSH Key Login Only. |
PeerInstanceName | N/A | HFE | The Name for the Peer Instance in GCP. Note that this is not the CEName or the SystemName. |
HfeInstanceName | N/A | HFE 2.0 | The name of the HFE instance in GCP; use only for HFE 2.0 (single HFE node)*. |
Note
* For more information, refer to the section "HFE 2.0" of the page Configure HFE Nodes in GCP.
** For more information, refer to the section "HFE 2.1" of the page Configure HFE Nodes in GCP.
CLI Configuration for Configuring PKT Ports
Configure the PKT interfaces using the following command examples:
# Configuring PKT0 interface set addressContext default ipInterfaceGroup LIF1 commit set addressContext default ipInterfaceGroup LIF1 ipInterface F1 ceName <<CE Name of configured Active* from metavars>> portName pkt0 ipVarV4 IF2.IPV4 prefixVarV4 IF2.PrefixV4 ipPublicVarV4 <<IF2.FIPV4 OR HFE_IF2.FIPV4 **>> commit set addressContext default ipInterfaceGroup LIF1 ipInterface F1 mode inService state enabled commit set addressContext default staticRoute <<subnet gateway>> 32 0.0.0.0 LIF1 F1 preference 100 commit set addressContext default staticRoute 0.0.0.0 0 <<subnet gateway>> LIF1 F1 preference 100 commit set addressContext default staticRoute <<subnet IP>> <<subnet prefix>> <<subnet gateway>> LIF1 F1 preference 100 commit # Configuring PKT1 interface set addressContext default ipInterfaceGroup LIF2 commit set addressContext default ipInterfaceGroup LIF2 ipInterface F2 ceName <<CE Name of configured Active* from metavars>> portName pkt1 ipVarV4 IF3.IPV4 prefixVarV4 IF3.PrefixV4 ipPublicVarV4 <<IF3.FIPV4 OR HFE_IF3.FIPV4 **>> commit set addressContext default ipInterfaceGroup LIF2 ipInterface F2 mode inService state enabled commit set addressContext default staticRoute <<subnet gateway>> 32 0.0.0.0 LIF2 F2 preference 100 commit set addressContext default staticRoute 0.0.0.0 0 <<subnet gateway>> LIF2 F2 preference 100 commit set addressContext default staticRoute <<subnet IP>> <<subnet prefix>> <<subnet gateway>> LIF2 F2 preference 100 commit
Note
* This is the active which has ACTIVE as their CERole in the user data.
** If using HFE, use the HFE_IF*.FIPV4 metavariable. For Standalone, use IF*.FIPV4.
The correct configuration is similar to the following:
admin@nodeA> show table addressContext default staticRoute
IP
INTERFACE IP
DESTINATION GROUP INTERFACE CE
IP ADDRESS PREFIX NEXT HOP NAME NAME PREFERENCE NAME
------------------------------------------------------------------------
0.0.0.0 0 10.0.32.1 LIF1 F1 100 -
0.0.0.0 0 10.0.48.1 LIF2 F2 100 -
10.0.32.0 24 10.0.32.1 LIF1 F1 100 -
10.0.32.1 32 0.0.0.0 LIF1 F1 100 -
10.0.48.0 24 10.0.48.1 LIF2 F2 100 -
10.0.48.1 32 0.0.0.0 LIF2 F2 100 -
[ok][2019-08-05 10:26:34]
admin@nodeA> show table addressContext default ipInterfaceGroup
IP
PORT IP ALT IP ALT DRYUP BW VLAN IP VAR PREFIX VAR IP PUBLIC VA
NAME IPSEC NAME CE NAME NAME ADDRESS PREFIX ADDRESS PREFIX MODE ACTION TIMEOUT STATE CONTINGENCY TAG BANDWIDTH V4 V4 VAR V4 V6
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
LIF1 disabled F1 nodeA-10.2.0.14 pkt0 - - - - inService dryUp 60 enabled 0 - 0 IF2.IPV4 IF2.PrefixV4 HFE_IF2.FIPV4 -
LIF2 disabled F2 nodeA-10.2.0.14 pkt1 - - - - inService dryUp 60 enabled 0 - 0 IF3.IPV4 IF3.PrefixV4 HFE_IF3.FIPV4 -
[ok][2019-08-05 10:29:58]
Example SBC Instance Configurations
Sample SBC configurations are provided below. For more information, refer to Metadata and Userdata Formats on AWS.
SBC Meta Variable Table
Example Meta Variable table for HFE environment:
admin@nodeA> show table system metaVariable CE NAME NAME VALUE -------------------------------------------------------- nodeA-10.2.0.14 IF0.GWV4 10.0.0.1 nodeA-10.2.0.14 IF0.IPV4 10.0.0.54 nodeA-10.2.0.14 IF0.Port Mgt0 nodeA-10.2.0.14 IF0.RNat True nodeA-10.2.0.14 IF1.GWV4 10.2.0.1 nodeA-10.2.0.14 IF1.IPV4 10.2.0.14 nodeA-10.2.0.14 IF1.Port Ha0 nodeA-10.2.0.14 IF1.RNat True nodeA-10.2.0.14 IF2.GWV4 10.0.32.1 nodeA-10.2.0.14 IF2.IPV4 10.0.32.204 nodeA-10.2.0.14 IF2.Port Pkt0 nodeA-10.2.0.14 IF2.RNat True nodeA-10.2.0.14 IF3.GWV4 10.0.48.1 nodeA-10.2.0.14 IF3.IPV4 10.0.48.37 nodeA-10.2.0.14 IF3.Port Pkt1 nodeA-10.2.0.14 IF3.RNat True nodeA-10.2.0.14 IF0.FIPV4 35.184.248.228 nodeA-10.2.0.14 IF0.PrefixV4 24 nodeA-10.2.0.14 IF1.PrefixV4 32 nodeA-10.2.0.14 IF2.PrefixV4 32 nodeA-10.2.0.14 IF3.PrefixV4 32 nodeA-10.2.0.14 HFE_IF2.FIPV4 34.68.87.53 nodeA-10.2.0.14 HFE_IF3.FIPV4 10.0.3.19 nodeA-10.2.0.14 HFE_IF2.IFName IF_HFE_PKT0 nodeA-10.2.0.14 HFE_IF3.IFName IF_HFE_PKT1 nodeA-10.2.0.14 secondaryIPList.Pkt0 ['10.0.32.204'] nodeA-10.2.0.14 secondaryIPList.Pkt1 ['10.0.48.37'] nodeB-10.2.0.15 IF0.GWV4 10.0.0.1 nodeB-10.2.0.15 IF0.IPV4 10.0.0.55 nodeB-10.2.0.15 IF0.Port Mgt0 nodeB-10.2.0.15 IF0.RNat True nodeB-10.2.0.15 IF1.GWV4 10.2.0.1 nodeB-10.2.0.15 IF1.IPV4 10.2.0.15 nodeB-10.2.0.15 IF1.Port Ha0 nodeB-10.2.0.15 IF1.RNat True nodeB-10.2.0.15 IF2.GWV4 10.0.32.1 nodeB-10.2.0.15 IF2.IPV4 10.0.32.204 nodeB-10.2.0.15 IF2.Port Pkt0 nodeB-10.2.0.15 IF2.RNat True nodeB-10.2.0.15 IF3.GWV4 10.0.48.1 nodeB-10.2.0.15 IF3.IPV4 10.0.48.37 nodeB-10.2.0.15 IF3.Port Pkt1 nodeB-10.2.0.15 IF3.RNat True nodeB-10.2.0.15 IF0.FIPV4 35.232.104.143 nodeB-10.2.0.15 IF0.PrefixV4 24 nodeB-10.2.0.15 IF1.PrefixV4 32 nodeB-10.2.0.15 IF2.PrefixV4 32 nodeB-10.2.0.15 IF3.PrefixV4 32 nodeB-10.2.0.15 HFE_IF2.FIPV4 34.68.87.53 nodeB-10.2.0.15 HFE_IF3.FIPV4 10.0.3.19 nodeB-10.2.0.15 HFE_IF2.IFName IF_HFE_PKT0 nodeB-10.2.0.15 HFE_IF3.IFName IF_HFE_PKT1 nodeB-10.2.0.15 secondaryIPList.Pkt0 ['10.0.32.206'] nodeB-10.2.0.15 secondaryIPList.Pkt1 ['10.0.48.39'] [ok][2019-08-02 09:24:54]
SBC Instance Data
Each SBC contains instance data, which is available in the file /opt/sonus/conf/instanceLcaData.json.
{
"secondaryIPListMgt0": [],
"Mgt0IPv4Prefix": "24",
"VIP_Pkt1_00": {
"IP": "10.0.48.37",
"IFName": "IF3"
},
"Ha0IPv4Prefix": "32",
"PeerCEMgt0IPv4Address": "10.0.0.55",
"SystemName": "GCEHA",
"PeerInstanceName": "cj-standby",
"ThirdPartyCpuAlloc": "0",
"PeerCEHa0IPv4Prefix": "32",
"Mgt0Prefix": "24",
"ThirdPartyMemAlloc": "0",
"SbcPersonalityType": "isbc",
"PeerCEHa0IPv4Address": "10.2.0.15",
"CEName": "nodeA",
"ClusterIp": "10.2.0.15",
"HFE_IF2": {
"IFName": "IF_HFE_PKT0",
"FIPV4": "34.68.87.53"
},
"secondaryIPListHa0": [],
"PeerCEPkt1IPv4Prefix": "32",
"instanceName": "cj-active",
"Pkt1IPv4Prefix": "32",
"CERole": "ACTIVE",
"secondaryIPListPkt1": [
"10.0.48.39"
],
"secondaryIPListPkt0": [
"10.0.32.206"
],
"ReverseNatPkt0": "True",
"ReverseNatPkt1": "True",
"Pkt0IPv4Prefix": "32",
"PeerCEPkt1IPv4Address": "10.0.48.40",
"zone": "projects/626129518018/zones/us-central1-a",
"SbcMgmtMode": "centralized",
"PeerCEPkt0IPv4Address": "10.0.32.205",
"IF0": {
"PrefixV4": "24",
"RNat": "True",
"Port": "Mgt0",
"FIPV4": "35.184.248.228"
},
"IF1": {
"PrefixV4": "32",
"RNat": "True",
"Port": "Ha0"
},
"IF2": {
"PrefixV4": "32",
"RNat": "True",
"Port": "Pkt0"
},
"IF3": {
"PrefixV4": "32",
"RNat": "True",
"Port": "Pkt1"
},
"AdminSshKey": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCMEMXjfUCrKApRWcjEYshAVDNg6aIrrgOp/ckLk2bSPFa37
BNoHr+SlxfvOUOm+C61CB6yp6Lou2lQWjBISoK5rx8fLrPOJz9JDnmEwmmnk4EdbWB0ArZC9MdhNxYbaWCeQFIYBY4FwLIxSy1
fyc6fZhQiPtqd05o08/9icwEbPM0EjeO7FHHMVLVBn7/LlDABcA4+O28/FF61HT3fJ1XZzXgg5MRURf/WcN0aZoKshsVZPiJZWg
2lkKehXHnMDjnmPvjWgyMQsgs9KfZirg1PMw7O8G/oMfXHMICCkx3I8t8/6VK2WQvoilo4zn6LgpLIjBvc2mxJRCZqh3MgxT"
"PeerCEName": "nodeB",
"VIP_Pkt0_00": {
"IP": "10.0.32.204",
"IFName": "IF2"
},
"PeerCEMgt0IPv4Prefix": "24",
"HfeInstanceName": "cj-hfe",
"HFE_IF3": {
"IFName": "IF_HFE_PKT1",
"FIPV4": "10.0.3.19"
},
"secondaryIPList": {
"Ha0": [],
"Mgt0": [],
"Pkt1": [
"10.0.48.37"
],
"Pkt0": [
"10.0.32.204"
]
},
"PeerCEPkt0IPv4Prefix": "32"
}
Note
The AdminSshKey example above is actuallly one continuous line, but was split into multiple lines to display better on the page.
Configure the SBC for DNS Call Flows
Note
The following steps are mandatory to configure the SBC for DNS call flows.
When an external DNS server is configured in the SBC for FQDN resolutions, the resolv.conf file is updated in the SBC with the custom DNS server's IP address. This increases the priority of the custom DNS server over the metedata namespace server. As a result, all the post-reboot metadata queries fails, the SSH keys from the metadata server for the instance are not copied in the Authorized_keys file, and the machine is inaccessible.
Add the following FQDN against its IP address in your custom DNS server, so that the metadata DNS requests are successful, and the custom DNS server can resolve the Google metadata FQDN.
Note
The following example is for an Ubuntu DNS instance. For any other OS, configure the DNS server accordingly.
In the
named.conffile:zone "google.internal" IN { type master; allow-query {any;}; file "google.internal.zone"; };Open the folder containing all the zone files.
Create a new zone file
google.internal.zonewith the following entries:# cat google.internal.zone $TTL 1D@ IN SOA ip-172-31-10-54.google.internal. root.google.internal. ( 2019109120 ; Serial number (yyyymmdd-num) 8H ; Refresh 2M ; Retry 4W ; Expire 1D ) ; Minimum IN NS ip-172-31-10-54 as.ipv4 A 0.0.0.0 as.ipv6 AAAA 0::0 ip-172-31-10-54 A <DNS server IP address> metadata IN A 169.254.169.254- Reload the DNS service by executing
rndc reload. - Your FQDN is
metadata.google.internal,which resolves with the IP169.254.169.254.
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