dhcprelay servers limited to 4 on ASA5510 after upgrading to 8.2(5)58

[ippolito]

After upgrading from 7.2 code to 8.2(5)58, my ASA5510's no longer allow more than four dhcprelay servers. This used to work, and I found no mention of it in the release notes.

I have more than four on my ASA5505's running the same code version, and it works flawlessly.

When I add a fifth server on the 5510, this is the error I get:

ERROR Can't add 10.10.10.10 to DHCP Relay server table-limit 4 servers

Bug?

Thank you,

Mike

[Rishabh Seth]

Hi,

Here is an excerpt from the configuration guide for ASA 8.2(5):

You can add up to four DHCP relay servers per interface; however, there is a limit of ten DHCP relay servers total that can be configured on the ASA. You must add at least one dhcprelay server command to the ASA configuration before you can enter the dhcprelay enable command. You cannot configure a DHCP client on an interface that has a DHCP relay server configured.

Please refer the following document:

http://www.cisco.com/c/en/us/td/docs/security/asa/asa82/configuration/guide/config/dhcp.html#wp1116296

Let us know if you are seeing issue with different configuration.

Hope it helps!!!

R.Seth

[ippolito]

Hi Rishabh, thank you for the quick reply. I'm a little perplexed about this -- any idea why was this changed between the 7.2 code and the 8.2.5 code? And why does it work on a 5505 running 8.2.5 and *not* on a 5510 running the 8.2.5 code? And why was this not listed in the release notes? This seems like something someone should know before upgrading.

Do I have any way to convince Cisco to remove this limitation? It obviously isn't a resource limitation, as it works fine on the 5505, but rather what seems to be an arbitrary limit.

Thanks,

Mike

[ippolito]

An update on this: I have several ASA5510's, and one of them allows me to add five dhcprelay servers to the same interface -- they're both on 8.2(5)58. The only difference I can see is that the one that allows five has 1024 MB of RAM, while the one that only allows four has only 256 MB of RAM. If I upgrade the RAM in the second 5510, do you know if that will allow me to add another server?

Thanks,

Mike