Ok, so based on the comments below, Im going to have to say I was wrong about making sure you set these. I have learned from these guys below that changing these settings certainly affects how much of system resources is set aside and can negatively affect performance. Thank you guys for bringing this up. Very much appreciated.
*** Original Post ***
Just as the title implies, there are three commands I always run on a new install that I do. I always want to max out the number of arp entry count, number of vlans, and increase the potential static routes I can put in (although Im hoping not to put in 2048 of them). In the static route case, I have had to increase the number I wanted in on the switch (I think the default is 64). Just to me, maybe not you, but its worth up'ing these defaults to the max, just in case.
Core6610(config)#system ip-arp 64000
Reload required. Please write memory and then reload or power cycle.
Core6610(config)#system vlan 4095
Reload required. Please write memory and then reload or power cycle.
Core6610(config)#system ip-static-route 2048
Reload required. Please write memory and then reload or power cycle.
The 6610 seems to have a fixed next-hop limit that you'll hit well before getting to 64000 arp entries. I think it was around 6-8000 addresses before it completely loses its mind.
ReplyDeleteHave you encountered this?
Its certainly possible. I personally have not experienced it, but if you hit its max, I guess anything could happen.
DeleteI'm a Brocade TSE and appreciate your blog. I would not recommend increasing the system max settings this high unless really needed. Increasing these settings to the maximums reserves memory which can lessen the performance of the ICX6610.
ReplyDeleteGood info. Much appreciated.
DeleteHi Shane, Really like your post..... an addition to what has been posted earlier.... Configuring the system max reserves the memory for that particular instance and it is not available for other processes..... So the dynamic system memory is reduced and made to sit idle for arp, vlan and static-route, if the usage of those processes is minimal- which will be the case for most of the customers..... So it is always wise to use the memory as required in customer topology - case by case.
ReplyDeleteGood info. I think Im going to have to redo this post above. I appreciate you sharing it with me. Ill make sure I correct this. Thank you.
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