![]() |
![]() |
![]() |
![]() |
Setting Network Parameters
The Serval filer contains different network-layer parameters that can be configured and mointored. For example, network routes, ports and interfaces, and host name resolution services are available through the Serval's GUI.
The network layer configuring and management tools are contained in the Network section of the tree diagram. When you expand this section, you will see that there are three parts:
Monitoring Network Ports and Interfaces
The Network ports and interfaces are assigned to the IP network side of the Serval Filer. This side of the filer is the side where the hosts and end-users reside. They connect to the Serval through one or more Gigabit Ethernet links that connect to the Serval's File Processing NIM.
The Serval's GUI contains the Network Port/Interfaces display which allows you to monitor and configure the network ports and interfaces. Table 15 shows the Network Port/Interfaces display.
Figure 15 Network Port/Interface displayTable 11 shows the contents of the Network Port/Interface display and explains each field in the display.
Even though the Serval intermittently refreshes the contents of the display, you can refresh the contents of the Port/Interface display at any time by clicking the Refresh button.
Viewing Port and Interface Details
On the Network Port/Interface display, the Name field contains a link. By clicking the name in the Name field, you invoke the Port/Interface Details display where you can view detailed information and performance statistics about the network interface. Figure 16 shows the Port/Interface Detail display.
Figure 16 Port/Interface Detail displayThis display contains two separate sections, the Interface Detail section, and the Interface State section.
Table 12 shows the contents of the Port/Interface Detail display, and explains what each field means.
Deleting Ports/Interfaces
From the Network Port.Interface display, you can delete ports and interfaces. On this display, the Operations field contains a link called "Delete." By clicking this link, you invoke the Delete Interface Confirmation dialog where you can remove an IP interface address from a network port. Figure 17 shows the Delete Interface Confirmation dialog.
Figure 17 Delete Interface Confirmation dialogStep 1: Click Continue to delete the IP address in IP Address from the interface listed in Interface.
Step 2: As an alternative, click Cancel to abort the interface deletion process and return to the Network Port/Interface display.
Adding Ports/Interfaces
On the Network Port/Interface display you can add interfaces to network ports. On this display, the Operations column contains a link called "Add." By clicking this interface, you invoke the Add IP Address dialog where you can assign an IP address to a network port. Figure 18 shows this dialog.
Figure 18 Add IP Address dialogStep 1: In the IP Address field, enter the IP interface address that you want assigned to the interface in Interface. Enter the IP address in dotted decimal notation-for example, 10.11.101.13
Step 2: In the Subnet Mask field, enter the mask bits for the IP address that you are assigning to the interface in Interface. Enter the subnet mask in dotted decimal notation-for example 255.255.255.0
Step 3: Click Save to commit these parameters to the config file and immediately activate them on the Serval.
Disabling an Interface
On the Network Port/Interface display you can add interfaces to network ports. On this display, the Operations column contains a link called "Down." By clicking this interface, you invoke the Change Interface Status Confirmation dialog where you can change the status of an enabled interface to disabled. Figure 19 shows the Change Interface Status Confirmation dialog.
Figure 19 Change Interface Status Confirmation dialogStep 1: Click Continue to disable the interface. When the interface is disabled, it can no longer share file system resources nor accept read or write requests from clients in the IP network.
Step 2: Click Cancel to abort the interface disable procedure and return to the Network Port/Interface display.
Managing Network Routes
The Serval's GUI enables you to monitor network routes in the Route Table. The Serval supports static routes, which are not automatically added or deleted. You must manually configure and delete static route. The Serval also supports default routes to a next hop gateway for those destination IP addresses that are not specifically known to the Serval Filer through its Route Table.
The Serval displays its Route Table through the Network Route display. Figure 20 shows this display.
Figure 20 Network Route displayTable 14 shows the contents of the Network Route display and explains the contents of each field in the display.
· Even though the Serval filer intermittently refreshes the contents of the Network Route display, you can update the contents of this display at any time by clicking the Refresh button.
Adding Network Routes
From the Network Route display, you can add routes through the Add Route button. By clicking this button, you invoke the Add Route dialog where you can specify destination address and mask as well as the next hop router. Figure 21 shows the Add Route dialog.
Figure 21 Add Route dialogStep 1: In the Destination field, enter the destination address of the route you are configuring. Enter the destination address in dotted decimal notation-for example 10.11.101.23
Step 2: In the Subnet field, enter the mask bits for the destination address configured in Destination. Enter the subnet mask in dotted decimal notation-for example, 255.255.255.0
Step 3: In the Next Hop field, enter the IP address of the next hop gateway router-for example, 119.148.11.128
Step 4: Click Save to send these settings to the configuration file, and immediately post the route to the Route Table.
To add a default route, enter an all-zeroes broadcast address in the Destination and Subnet fields-for example 0.0.0.0 and 0.0.0.0 respectively-and provide a valid, non-zero IP address in the Next Hop field.
Deleting Network or Default Routes
From the Network Route display, you can delete routes from the Route Table. On the Network Route display, the Operation field contains a link called "Delete." By clicking this link, you invoke the Delete Route Confirmation dialog where you can completely remove a static network route or default route. Figure 22 shows the Delete Route Confirmation dialog.
Figure 22 Delete Route ConfirmationStep 1: Click Continue to delete the route indicated in the Destination and Subnet Mask field, and also delete the next hop router associated with the route.
Monitoring Name Services
The Serval supports name resolution services for hosts that reside in a customer's network. The name services enable the administrator to set up a file that contains information about the host's network, domain, and name server. After parameters have been created, a name can be associated with a host, and IP address resolution for named hosts can occur without administrator input. The benefit of name resolution is that it allows administrators to quickly and easily perform attachment point changes, such as adding or moving hosts, without having to manage IP addresses.
· network information services (NIS), formerly called the yellow pages (YP) service. With NIS, the Serval can resolve a symbolic name for each networked device into an IP address.
· domain name services (DNS). With DNS the Serval can resolve fully qualified domain names in the customer's network to IP addresses.
The Serval does not use NIS or DNS for end user authentication. End users on
IP-connected clients are authorized through network file protocols (for example, NFS) in use on the client. For clients using NFS v2 or v3, the Serval implicitly trusts the file requests it receives from the client. Name resolution services are a prominent requirement in the Storage Service Provider marketplace, but also occur in enterprise networks.
Full implementations of NIS can be used to determine UID/GID information to grant proper access permissions. However, the Agile Storage implementation of NIS contains the host map only, so the Serval Filer's NIS features support host name resolution only.
The Serval support Host Name Resolution through the Name Service display. Figure 23 shows this display.
Figure 23 Name Service displayTable 15 shows the contents of the Name Service display, and explains what each field in the display means.
· Even though the Serval filer intermittently refreshes the contents of the Name Services display, you can update the contents of this display at any time by clicking the Refresh button.
Adding Hosts for Name Resolution
You can add a host for name resolution through the Name Service display. On this display, the Operation field contains the Add button. By clicking this link, you invoke the Name Service Add dialog where you can specify an IP address and mask as well as which type of name resolution you want configured on the network you are adding. Figure 24 shows the Name Service Add dialog.
Figure 24 Name Service Add dialogStep 1: In the Client IP Address field, enter the IP address of the IP client whose address will be resolved to a name.
Step 2: In the Subnet Mask field, enter the mask bits for the IP address you are specifying in Client IP Address.
Step 5: For DNS resolution, in the Domain Name field, enter the fully qualified domain name that will be resolved.
Step 6: For DNS resolution, in the DNS Servers fields enter the IP addresses of up to three DNS servers. Enter the IP address of the DNS server(s) in dotted decimal notation, for example 109.112.139.148.
Step 8: For NIS resolution, in the Domain Name field, enter the NIS domain name that will be resolved.
Step 9: For DNS resolution, in the NIS Server field, enter the IP address of the NIS server. Enter the IP address in dotted decimal notation, for example 101.11.103.128.
Step 10: Click Save to send these parameters to the config file and immediately activate them on the Serval.
Modifying Hosts for Name Resolution
You can add or a host for name resolution or change a host's parameters through the Name Service display. On this display, the Operation field contains the "Modify" link. By clicking this link, you invoke the Name Service Modify dialog. Figure 25 shows the Name Service Modify dialog.
Figure 25 Name Service ModifyStep 1: In the Subnet Mask field, enter the mask bits for the IP address you are specifying in Client IP Address.
Step 4: For DNS resolution, in the Domain Name field, enter the fully qualified domain name that will be resolved.
Step 5: For DNS resolution, in the DNS Servers fields enter the IP addresses of up to three DNS servers. Enter the IP address of the DNS server(s) in dotted decimal notation, for example 109.112.139.148.
Step 7: For NIS resolution, in the Domain Name field, enter the NIS domain name that will be resolved.
Step 8: For DNS resolution, in the NIS Server field, enter the IP address of the NIS server. Enter the IP address in dotted decimal notation, for example 101.11.103.128.
Step 9: Click Save to send these parameters to the config file and immediately activate them on the Serval.
Deleting Name Services
You can delete a host for name resolution through the Name Service display. On this display, the Operation field contains the Delete button. By clicking this link, you invoke the Delete Name Service DNS,NIS Entry Confirmation dialog where you can specify an IP address and mask as well as which type of name resolution you want configured on the network you are adding. Figure 26 shows the Delete Name Service DNS, NIS Entry Confirmation dialog.
Figure 26 Delete Name Service DNS, NIS Entry Confirmation dialog
![]() |
![]() |
![]() |
![]() |