SRW224G4: can't set the VLAN simple
Hello
My knowledge on him VLAN is somewhat limited, so please bear with me :-)
The situation is like this:
We have a small area demilitarized, where a (manageable) 3CDSG8 3COM switch is used. Internally, we have the SRW224G4. Now I have to make is a link 'safe' of our internal network on the 3COM switch.
Then I configured the 3COM switch so that the management port to use a routable IP address internally, plus 55 its VLAN ID.
Then I tried to Configure Port 2 of the SRW224GP also use 55 as its VLAN (VLAN is that only active, all other ports are set to 'Access'):
* Management of VLAN-> Port setting
E2-> Mode "General"-> frame Type 'Accept all'-> PVID "55"-> the active filtering of capture
* Ports2VLAN for VLAN 55
E2-> "Untagged" (but does not work with 'Tagged' as well)
If I then try to ping the 3COM switch from our internal network, the rest is inaccessible.
OTOH, if I change management VLAN-> Port setting like that...
E2-> Mode 'access '.
... I can access the switch 3COM internally.
But if I understand it right now, which leaves my 2 Port open for any kind of data, regardless of any VLAN ID used.
... So where I am going wrong? In my naïve world, this configuration is the "most trivial", but obviously I'm missing something...
Thanks in advance
Hello
Apologies, I'm not trying to insult you, but my SRW224G4 is a layer switch 2 only, it can not 'road' IP packets over barriers VLAN. It is not a layer 3 switch. He would need anything else as a router or switch three to be able to route between Gates VLANS layer. (if that's what you want)
So, I guess the bottom line is you want 3COM to be part of the intranet and managed by behind the private side of the firewall?
If this is the case then;
In the 3COM switch
step 1. If you did the port of 3com 8 not marked one of the 55 VLAN, otherwise say no tag Ethernet frames will be evacuated outside the 3COM switch 8.
Step 2, then do just the address of the 3COM say IP 172.20.10.3 address switch management.
step 3. Fix the interface of the switch 3COM away from the default management VLAN and add it to 55 VLAN.
In the SRW224G4
step 1 then just connect a connecting cable to e3 (untagged already in the Vlan 1 because it is in access mode).
My switch wouldn't know that unmarked packages coming out of the management of 3com interface are not members of the default VLAN, as Ethernet frames are not marked.
These ethernet frames unmarked would mingle to VLAN1 packages ethernet frames in the SRW224G4.
My switch would only see unmarked in the VLAN 1 3COM Ethernet frames and must assume that these images are also part of the VLAN1.
The end result would be that the 3COM switch would be managed
1. a 172.20.10.X network or a
2 incoming VPN connection in the firewall.
I hope this helps and be confused just the topic, I thought you need a approach and noticed that no one has answered your question.
If I'm right, you owe me a beer when we meet then face to face :). If it's completely out of context with what you ask, I can only ask for clarification or simplification of the question.
What about Dave
Tags: Cisco Support
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