TechnoDweeb
@tx.charter
| [Connectivity] Cisco devices Charter and DHCP
Hey All,
Anyone aware of issues and/or a resolution to using Cisco devices on Charters network. I have an old PIX 501 that I never could get to get an IP. I thought it might just be the PIX and never worried about it, but I recently bought a new 871W that sports the latest IOS and feature sets and it too fails to get an IP.
It should be noted:
1) I'm behind an Ambit modem
2) Both the 501 and 871W obtain an address fine on anything other than the Charter DHCP implementation.
3) I "have" gone through the motion of powering off the modem and bringing devices up fresh.
Any help is appreciated |
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TechnoDweeb
@tx.charter
|  Looks like I my have found my own answer. I ended up adding a default static route that pointed traffic out the interface configured on the WAN.
for example:
ip route 0.0.0.0 0.0.0.0 FastEthernet4
Once this entry was made the router grabbed an IP right away. Not sure why the IOS can't install the gateway offered in the Charter DHCP lease as the default route, but as long as this works just as well.....
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DaSneaky1D
one wall to block them all
Premium,MVM
join:2001-03-29
The Lou
1 edit | It may work, but adding a default gateway like that will create a high arp requests, slowing down your connection. |
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winky
Turn Left At The Moon
join:2001-02-11
Saint Louis, MO | Is that just a cisco thing? (multiple ARP requests) |
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DaSneaky1D
one wall to block them all
Premium,MVM
join:2001-03-29
The Lou
1 edit | No, it happens with you send requests to an interface, and that interface needs to resolve ARP requests...instead of sending those requests directly to the gateway. |
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InnerMe
join:2002-08-30 | reply to TechnoDweeb
Yep it will generate arps like crazy. Certain areas of Charter are cracking down on excessivly arping devices as it creates excessive load for the cmts. |
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