About Marvin de Haas

Marvin de Haas · 05-01-2014

dear all, I am trying to configure DHCP relay by using ip helper addresses. Strange enough I configured the ip helper addresses properly but the DHCP requests are not being forwarded. Very strange this behavior. I configured it on other similar devic...

Marvin de Haas · 09-25-2013

Dear all,I have a WS-C3750G-24TS network switch with one SFP module installed. The show inventory raw command displayes the following;NAME: "GigabitEthernet1/0/25", DESCR: "1000BaseSX SFP"PID: , VID: 255, SN: FNS0928G0FESW61#sh interface gigabitEther...

Marvin de Haas · 01-09-2013

Dear all,I recently installed DHCP snooping on a 3750v2 switch (Version 12.2(55)SE4) and configured the uplink(Po2) as a trusted port. The problem is that clients cannot receive an IP address. When I disable DHCP snooping it is working properly. DHCP...

Marvin de Haas · 08-27-2012

Dear all,I just tried to upgrade my Cisco 2600XM router from 12.3-6 IOS to 12.4-25d IOS, but I was unable to start the router with this new IOS.flash:c2600-ipbase-mz.123-6.bin (old IOS)flash:/c2600-ipbasek9-mz.124-25d.bin (new IOS)===================...

Marvin de Haas · 05-09-2011

Dear Sir/ Madam,Recently I was investigating IP connectivity disconnects between a layer 2 switch (WS-C2960G-8TC-L with IOS 12.2(35)SE5 and default gateway internet router. The links are not showing any error messages (CRC, collisions etc).The only e...

Marvin de Haas · 06-22-2015

Dear all, I am also working on a similar solution that the ACS needs to forward Accounting messages to an external RADIUS server for SSO purposes. So if I am correct the only thing to do is to configure the primary RADIUS server as a proxy RADIUS ser...

Marvin de Haas · 06-18-2014

Only vlan 1 is not working. The other vlans work fine with exactly the same ip helper addresses. DHCP scopes are being split properly. The problem is that the switch does not forward broadcasts wihin the vlan 1 domain otherwise I could see the incomi...

Marvin de Haas · 06-18-2014

Sorry for the late reply was on holiday. Removing the other IP helper addresses doesn't seam to work. Strange enough one day it worked for some minutes but nothing was changed. Still it doesn't work at this moment. Actually it is really weird and I d...

Marvin de Haas · 05-12-2014

since the beginning only vlan 1 does not work other vlans do work properly with DHCP relay. There is no IP DHCP snooping enabled on the switch.When requesting an IP address it is not being relayed but it is configured properly. I just cannot understa...

Marvin de Haas · 05-08-2014

Vlan1 is up (if_number 2069) Corresponding hwidb fast_if_number 2069 Corresponding hwidb firstsw->if_number 2069 Internet address is 192.168.27.254/24 ICMP redirects are always sent IP unicast RPF check is disabled Output features: Check hwidb ...

Member Since	‎05-09-2011 05:26 AM
Date Last Visited	‎08-18-2017 03:56 AM
Posts	18

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DHCP relay not working

Retrieve SFP model number Cisco 3750

DHCP snooping not working dropping packets

unable to upgrade Cisco 2600XM to 12.4-25d

show ip traffic not a gateway

Dear all, I am also working

Only vlan 1 is not working.

Sorry for the late reply was

since the beginning only vlan

Vlan1 is up (if_number 2069)