About Matthew Lucas

Matthew Lucas · 03-23-2015

All,I'm missing something very basic here - can someone give me a pointer please?I have a L3 core switch (3550) connected to two access switches (both 2960's) and a DHCP server connected to the core switch. Config summary as follows:VLAN 100 CORPORAT...

Matthew Lucas · 04-14-2013

Hi guys,I have a 3750X four-switch stack acting as the core of a fairly simple LAN. All I need to achieve (and this seems inordinately hard, but it is entirely likely that I'm just being dense) is to get access to the internet through my core switch,...

Matthew Lucas · 03-31-2013

I'm becoming a real pest on here, haha. I have a number of 3560CG-8PC-S switches. My intention for them is to act as kind of gateway L3 switches - one for each satellite site. My thinking was simply to have an L3 device at the gateway to each of thos...

Matthew Lucas · 03-31-2013

Guys,I'm a little confused here. I've set all my switches (mix of 3750X, 2960S & CG and 3560CG) to rapid-pvst, yet whenever I plug in a new device, it still takes 30 secs for the switch to start allowing communications. My understanding was that rapi...

Matthew Lucas · 03-29-2013

Guys,I'm sorry if this seems a real basic question. I can get it working on Packet Tracer, but don't seem to be able to get it working in real life. Sanity check, please?I'm trying to get clients to pick up a DHCP address from my server. Physical con...

Matthew Lucas · 03-23-2015

It's ok - sorted it, thank you.The issue was simply that I hadn't set the correct default gateway for the server's own NIC. As soon as that was set correctly, DHCP dropped in for the clients. Thanks for your help.

Matthew Lucas · 03-23-2015

Ah, ok, I get that. However, have removed the ACL completely, and removed the ACL entries for the two SVI's, and still no DHCP for devices on ports in VLAN 200 (on L3 or L2 switch).L3 Switch config as below now:Switch01#sh runBuilding configuration.....

Matthew Lucas · 03-23-2015

sorry, just replied before you asked the question. Yes, the ACL is applied to both VLAN interfaces - I'm not sure if I need the ACL or not - I just wanted to ensure that traffic from one VLAN is allowed to travel to the other, though I was pretty sur...

Matthew Lucas · 03-23-2015

Oh, and I have put SVI 100 and 200 in ACL 101 and have modified ACL 101 as per below (still no joy though):interface Vlan100 ip address 10.1.0.2 255.255.255.0 ip access-group 101 in!interface Vlan200 ip address 10.2.0.2 255.255.255.0 ip access-group ...

Matthew Lucas · 03-23-2015

Hi Jon - that was a quick response.Yes, I have IP helper of 10.1.0.1 on SVI 200 (and have it on SVI 100 also, but good point that I don't need it).The ACL I'm not 100% sure on.The running-config shows: access-list 101 permit ip 10.0.0.0 0.255.255.255...

Member Since	‎03-13-2013 10:27 AM
Date Last Visited	‎12-14-2017 12:02 AM
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DHCP not passing across VLANs

Connecting Core switch to firewall

3560CG failing to open ports

Rapid-pvst still taking 30secs to converge

DHCP propagation

It's ok - sorted it, thank

Ah, ok, I get that. However,

sorry, just replied before

Oh, and I have put SVI 100

Hi Jon - that was a quick