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7 votes
Accepted

Is possible to stack/uplink different brands of switches using SFP?

Yes you can uplink different brand of switches using SFP. The term stacking in this context means that several switches act as a single one. This is always a proprietary (and model dependent) feature,...
JFL's user avatar
  • 19.7k
6 votes
Accepted

SNMP object not in the MIB

is it possible to add support for an OID that is not there by default? Unfortunately, adding support for these OIDs would require each of your vendors (Brocade and Dell) to implement them in their ...
Benjamin Dale's user avatar
5 votes
Accepted

Correct ACL rules to isolate WiFi traffic from other VLANs?

Since you want to permit WAN traffic, matching only any, you need to have a permit any any at the end. Basically, you want to deny traffic in and out of the Wi-Fi VLAN. For each of the other VLANs you ...
Zac67's user avatar
  • 84.9k
4 votes

Unique MAC address in L3 switch

Honestly, it's unthinkable for an Ethernet port not to have an individual MAC address. For a lot of reasons... LAN communication, port-channel, etc. But let's doubt it, in the world of machines ...
JohnyG's user avatar
  • 86
4 votes
Accepted

Dell N3000 - Use port security for certain ports while Dot1x is globally enabled

You can try to disable dot1x port-control on a specific interface under interface configuration mode using no form command of no dot1x port-control ...
Hung Tran's user avatar
  • 3,754
4 votes
Accepted

LACP to Fix Switch Bottleneck?

The setup is totally valid, provided all devices support LACP LAG. Two things though: The network design is not very good, neither for reliability nor from the performance/efficiency perspective. ...
Zac67's user avatar
  • 84.9k
4 votes
Accepted

Can a QSFP28 port break out to 4 SFP+ ports to separate hosts?

On most devices, that is possible. Check the manual for splitting a QSFP28 port into four SFP28 or SFP+ interfaces. The datasheet specifically shows 28 10GbT and 8 SFP+ for 10G and lists a 40GbE, ...
Zac67's user avatar
  • 84.9k
3 votes
Accepted

25G SFP28 NIC and 25G SFP Adapter

Forgot to add an answer.. In the Dell BIOS, they had set the default link speed on the port to be 10G non-negotiable. Once that was changed, I had to set the Link FEC to the same standard on both the ...
Missing Bit's user avatar
3 votes
Accepted

RADIUS accounting Stop messages not being sent

The answer was to use dot1x port-control mac-based on each port that you want authenticated.
Jacob Degeling's user avatar
3 votes
Accepted

Is temperature sensor on zero enough to prove PoE Control Module is failed?

(converted from comments) The "Total Power" figure should show what the PSU can deliver, regardless of what's currently in use. The "0 W" pretty clearly shows there's something wrong. Possibly, the ...
Zac67's user avatar
  • 84.9k
3 votes
Accepted

Allowing only routed traffic, block intra-VLAN forwarding

Since your clients are connected by the edge switches you'll need to filter unwanted traffic there - before the core switches. How exactly that can be done depends on the models/series you use. With ...
Zac67's user avatar
  • 84.9k
3 votes

how can I find out deployment date?

Usually you'd have that date in your inventory. For HPE/Aruba gear you can use the warranty check (requires registration as of late): https://support.hpe.com/connect/s/?card=wc. Cisco: https://...
Zac67's user avatar
  • 84.9k
3 votes

snmpwalk returns hex-string for interfaces without a description

(Legally obligatory notice - I work for Dell) As @Ricky pointed out, it returns what it returns. Hex 00 is typically the null terminator for strings so I'm guessing there's some traditional C-family ...
Grant Curell's user avatar
3 votes
Accepted

Is non-blocking per-VLAN (rapid) spanning tree configuration possible?

Short answer: no. RSTP is entirely VLAN agnostic, so there's no way to make both trunks forwarding, regardless of which VLANs they use. You need either RPVST+ or MSTP on both switches, then you can ...
Zac67's user avatar
  • 84.9k
2 votes

Reason to disable spanning-tree?

I wouldn't disable STP in your topology. There's no need to. STP is used to ensure a loop free topology. If they haven't been already, you should bundle your Dell ports into a single port channel. As ...
OzNetNerd's user avatar
  • 2,337
2 votes
Accepted

How does a router monitor traffic between two devices on a switch

As per this page: The SonicWALL Packet Monitor feature allows you to capture and examine network traffic as it crosses your firewall. When activated, Packet Monitor logs the details of packets ...
OzNetNerd's user avatar
  • 2,337
2 votes
Accepted

Bandwidth hogging on managed switched network 17 users

QoS mechanisms only come into effect when there is congestion on the link. If you have a 20M circuit but connected to a 1G interface, your device will never recognize the congestion because the ...
John K.'s user avatar
  • 969
2 votes
Accepted

Switch Temperature - How hot it too hot!

It depends on your device, if temperature is high, fans will spin faster and you reduce timelife of your switch. I think 63°C is slightly high but I have switches working at this temperature (or ...
KorXo's user avatar
  • 1,152
2 votes
Accepted

Force10 MXL switch port mapping

You are correct (if the blade has dual port network cards) Blade1_NIC0 -> A1_Te0/1 Blade1_NIC1 -> A2_Te0/1 Blade2_NIC0 -> A1_Te0/2 Blade2_NIC1 -> A2_Te0/2 .... Blade16_NIC0 -> A1_Te0/16 ...
KorXo's user avatar
  • 1,152
2 votes
Accepted

Multiple LAN interfaces on SonicWALL

This is not possible using the Firewall model specified in the question. The final solution was to get more space to add a switch behind the firewall.
ATNPGO's user avatar
  • 221
2 votes

Force10 S4820T Fiber GBIC is not working

I understand you are using a 40G port with a breakout cable (4x10G). In this case, you need to split the 40G port in 4x10G ports. From the manual: Split a single 40G port into four 10G ports. ...
KorXo's user avatar
  • 1,152
2 votes

Firewall has only one port. How can I properly NAT to ISP on a Layer-3 switch?

One way is to create two logical interfaces (trusted and untrusted) on your firewall, using 802.1q trunking. You will configure your switch port to be a trunk with two VLANs. Logically, your Linux ...
Ron Trunk's user avatar
  • 67.7k
2 votes
Accepted

Firewall has only one port. How can I properly NAT to ISP on a Layer-3 switch?

Bridging your LAN and the WAN link is a terrible idea to start with... You don't need a 2nd physical interface on your firewall but you do need a 2nd logical interface. On the switch, configure a ...
Zac67's user avatar
  • 84.9k
2 votes

1-1 NAT on a SonicWall with a DMZ

In this situation, you should put your PBX device in DMZ zone, assign a private IP address for it, then create an Inbound access rule and an Inbound One-to-One NAT policy for public/Internet traffic ...
Hung Tran's user avatar
  • 3,754
2 votes
Accepted

Permit IP Directed Broadcast on DELL FTOS

By default, directed broadcasts are filtered on ingress for all interfaces. You need to enable directed-broadcast forwarding on the incoming interface. In the interface config context you need to ...
Zac67's user avatar
  • 84.9k
2 votes
Accepted

Configuring HP Smart Switch and SonicWall with VLAN

When a host is connected to port 37 you need to configure it untagged for VLAN ID 2. Hosts don't usually tag. Also, some other port needs to participate in VLAN 2 to have a working network. Likely, ...
Zac67's user avatar
  • 84.9k
2 votes
Accepted

Routing between VRFs through an outside bridge link

Dell engineering told me that, while it seems like it should work, this is not possible in the current firmware and this capability will not be added to the firmware.
yakatz's user avatar
  • 181
2 votes

how to connect to Dell N1548P with ansible

Short version: the Ansible connection type you want is ansible.netcommon.network_cli Longer version: The N1548P's operating system, OS6, doesn't have a RESTAPI like OS10/SONiC. Subsequently, Ansible ...
Grant Curell's user avatar
2 votes

Dell PowerConnect 5548P no power to Ubiquiti ER-X

I'm dumb and didn't think of the voltage coming from the switch. An adapter is needed to transform 48V from switch to 24V.
tripleblep's user avatar

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