I have also seen weird issues surrounded DHCP in my home lab in practice. What I would suggest and has seemed to HELP alleviate issues is to issue clear ip dhcp binding *
On Wed, Jan 9, 2013 at 5:43 AM, Bill <[email protected]> wrote: > Does the phone actually get the ip from your config or is it stuck? > > I have had a phone stuck before at proctor labs and it would not take > anything I did to resolve it. That is because some of the phones are not > actually attached to the rack device but layer two tunneled to the rack. > That means they do not recycle when you bounce them. > > Try this change your ip range and see if the phone gets a new ip, if so > then it is something ou are missing. > > If not try pinging the phone, does it reply? > > If so then you might recover it if not then open a ticket and see if you > can get another pod or use a softphone for now. You can also hardware VPN > into proctor labs and I find that to be the best solution for them to give > me more of a true lab experience. > > Bill > > > On Jan 8, 2013, at 11:32 PM, "Piotr Puchalski" <[email protected]> wrote: > > Nic,**** > > ** ** > > I’ve been battling a somewhat similar problem in my own lab (I have all > the hardware on my rack with full access) and the problem was that somehow > one of the phones was not taking the default gateway set in PUB’s DHCP. I > configured a pool locally on the router and it worked then. Next day (and > next lab) it worked fine again with CUCM. However now it is still not > working. Always make sure you have the default router configured correctly > on the phone, that is the first thing. The rest should be a cake.**** > > ** ** > > Peter**** > > ** ** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Nicolas MICHEL > *Sent:* Tuesday, January 08, 2013 4:54 PM > *To:* William Bell; Steffen Bruening > *Cc:* OSL Voice > *Subject:* Re: [OSL | CCIE_Voice] VOL2 lab 1 - HQ Phone cannot register ? > WTH**** > > ** ** > > Hi Guys ! > > Yeah I have checked fa0/0.10 and it is ok ! > > I cannot access to the IP phone since it is PL facilities :) DHCP scope > has been created/deleted/checked etc etc > I had no problem with BR1 or BR2 ... only with the 7962 in HQ .. Weird ! > > I have the same rack tomorrow for the same lab (VOL2 LAB1) that I need to > finish so I will try again :) > > Many thanks for the help guys :) > > > More to come later and hope to gain experience to finally be able to > answer questions here :) > > > Nic > > > **** > > Le 08/01/13 18:03, William Bell a écrit :**** > > Nic, **** > > ** ** > > On your HQ router, can you check Fa0/0.10? Make sure you have the > following config:**** > > ** ** > > *encapsulation dot1q 10 native***** > > ** ** > > I don't think it is DHCP snooping or you would not receive an IP address. > However, you could (and should) Erase the config on the IP phone to ensure > it isn't just using an "old" DHCP config. **** > > ** ** > > I would also check the DHCP scope. Check the server level (where you are > likely specifying global Option 150 params) and check the scope itself. > Make sure you haven't fat fingered a subnet mask, subnet, begin/end > address, or default gateway. When I have had a problem where the phone was > getting an address but was not progressing through TFTP and registration it > was usually related to a misconfiguration of the DHCP scope in CUCM. **** > > ** ** > > If you have to change the DHCP scope params then remember to restart the > DHCP monitor service. It is a finicky beast.**** > > ** ** > > HTH.**** > > ** ** > > -Bill**** > > ** ** > > On Jan 8, 2013, at 9:57 AM, Nicolas MICHEL wrote:**** > > > > **** > > Hey guys. > > I m in trouble with the phone connected to Fa1/0/23 of the 3750 in HQ. > > Vlan assignement are OK: > HQ-3750#sh run int fa1/0/23 > Building configuration... > > Current configuration : 113 bytes > ! > interface FastEthernet1/0/23 > switchport access vlan 10 > switchport voice vlan 20 > spanning-tree portfast > end > > HQ-3750#sh run int fa1/0/1 > Building configuration... > > Current configuration : 153 bytes > ! > interface FastEthernet1/0/1 > switchport trunk encapsulation dot1q > switchport trunk native vlan 10 > switchport mode trunk > speed 100 > duplex full > end > > HQ-3750#sh int trunk > > Port Mode Encapsulation Status Native vlan > Fa1/0/1 on 802.1q trunking 10 > > Port Vlans allowed on trunk > Fa1/0/1 1-4094 > > Port Vlans allowed and active in management domain > Fa1/0/1 1,10,20,30 > > Port Vlans in spanning tree forwarding state and not pruned > Fa1/0/1 1,10,20,30 > > > > > IP HELPER on the L3 Device is OK > > interface FastEthernet0/0.20 > encapsulation dot1Q 20 > ip address 10.10.200.3 255.255.255.0 > ip helper-address 10.10.210.10 > end > > > IP Phone can get an IP from the PUB (10.10.210.10) > > HQ-3750#sh cdp neigh fa1/0/23 det > ------------------------- > Device ID: SEP0021A086825D > Entry address(es): > IP address: 10.10.200.50 > Platform: Cisco IP Phone 7962, Capabilities: Host Phone > Interface: FastEthernet1/0/23, Port ID (outgoing port): Port 1 > Holdtime : 178 sec > > Version : > SCCP42.8-4-1S > > advertisement version: 2 > Duplex: full > Power drawn: 6.300 Watts > Power request id: 33373, Power management id: 1 > Power request levels are:6300 0 0 0 0 > Management address(es): > > > > the DHCP subnet is identical (except the IP range of course :) ) to the > others DHCP pool which other phone use and can register to CUCM... > > I have no idea what is the problem here since it is a very basic problem > .... > > if anyone has experienced the same on POD 11 of PL ? > > > Many thanks for your help on this > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com**** > > ** ** > > --**** > > William Bell**** > > blog: http://ucguerrilla.com**** > > Follow me on twitter @ucguerrilla**** > > ** ** > > ** ** > > ** ** > > ** ** > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
