The link below provides a short paper that may be of help. It discusses how to setup an isolated vlan for the N-Series, and has the N2048P in its list of supported switches.   [URL] Hope this helps.    
Our small office building currently has a Comcast Internet Gateway (10.1.10.1) that only supports a single scope DHCP server.  I'm trying to setup a single N2048P (10.1.10.254) with multiple isolated VLANs that utilize the DHCP pool capability of the switch.  I have internet access on VLAN1.  VLAN 10 and 80 are providing IP addresses to the clients, however, I have no internet access on those VLANs.  Port 48 of the switch is connected to the Gateway.  I've included my config file and not sure what I'm currently missing: !Current Configuration:!Software Capability "Stack Limit = 12, VLAN Limit = 4093"!Image File "N2000Stdv6.5.2.5"!System Description "Dell EMC Networking N2048P, 6.5.2.5, Linux 3.6.5-e3cd5a07, Not Available"!System Software Version 6.5.2.5!configurevlan 10,80exitvlan 10name "SAI"exitvlan 80name "MEDIA"exitslot 1/0 4    ! Dell EMC Networking N2048Pstackmember 1 4    ! N2048Pexitip routingservice dhcpip dhcp pool "SAI"lease 0 2 0dns-server 8.8.8.8 8.8.4.4default-router 10.10.10.254network 10.10.10.0 255.255.255.0domain-name sai.comexitip dhcp pool "MEDIA"lease 0 2 0dns-server 8.8.8.8 8.8.4.4default-router 10.80.10.254network 10.80.10.0 255.255.255.0domain-name media.comexitinterface vlan 1ip address 10.1.10.254 255.255.255.0exitinterface vlan 10ip address 10.10.10.254 255.255.255.0exitinterface vlan 80ip address 10.80.10.254 255.255.255.0exitip route 0.0.0.0 0.0.0.0 10.1.10.1username "admin" password 0192023a7bbd73250516f069df18b500 privilege 15 encryptedline consoleexec-timeout 60exitline telnetexec-timeout 3000exitapplication install SupportAssist auto-restart start-on-bootapplication install hiveagent start-on-boot!interface Gi1/0/1switchport access vlan 10exit!interface Gi1/0/2switchport access vlan 10exit!interface Gi1/0/3switchport access vlan 10exit!interface Gi1/0/4switchport access vlan 10exit!interface Gi1/0/5switchport access vlan 10exit!interface Gi1/0/6switchport access vlan 10exit!interface Gi1/0/7switchport access vlan 10exit!interface Gi1/0/8switchport access vlan 10exit!interface Gi1/0/9switchport access vlan 10exit!interface Gi1/0/10switchport access vlan 10exit!interface Gi1/0/11switchport access vlan 10exit!interface Gi1/0/12switchport access vlan 10exit!interface Gi1/0/43switchport access vlan 80exit!interface Gi1/0/44switchport access vlan 80exit!interface Gi1/0/45switchport access vlan 80exit!interface Gi1/0/46switchport access vlan 80exit!interface Gi1/0/47switchport access vlan 80exit!interface Gi1/0/48switchport mode trunkexitsnmp-server engineid local 800002a203e4f004ea80d6exit console(config)#show interfaces switchport gi 1/0/48 Port: Gi1/0/48VLAN Membership Mode: Trunk ModeMember of VLANs : (1),2-4093Access Mode VLAN: 1 (default)General Mode PVID: 1 (default)General Mode Ingress Filtering: EnabledGeneral Mode Acceptable Frame Type: Admit AllGeneral Mode Dynamically Added VLANs:General Mode Untagged VLANs: 1General Mode Tagged VLANs:General Mode Forbidden VLANs:Trunking Mode Native VLAN: 1 (default)Trunking Mode Native VLAN Tagging: DisabledTrunking Mode VLANs Enabled: AllPrivate VLAN Host Association: nonePrivate VLAN Mapping:Private VLAN Operational Bindings:Default Priority: 0Protected: Disabled console(config)#show ip interface Default Gateway................................ 10.1.10.1L3 MAC Address................................. E4F0.04EA.80D9 Routing Interfaces: Interface    State   IP Address      IP Mask         Method----------   -----   --------------- --------------- -------Vl1          Up      10.1.10.254     255.255.255.0   ManualVl10         Up      10.10.10.254    255.255.255.0   ManualVl80         Up      10.80.10.254    255.255.255.0   Manual  
Setting Up Isolated VLANs on N2048P with SS DHCP Gateway