I have two NetVanta 4660s that were recently installed a two separate customer locations. One is working fine on R11.2.0, the other is nightmarishly sluggish on the CLI (via telnet) when running R11.2.0 or R11.3.0. When you try to type a command, it's reminiscent of the days of dial-up. R10.11.0 does not have this problem. It's sort of strange since it's only affecting one of the two routers and only on the newer firmware. I know it's not a transport problem since the router behaves normally on R10.11.0 and there's no other problems other than the CLI acting strange.
Anyone else run into this problem so far? For now I'm just going to leave it running R10.11.0 until there's an Extended Maintenance Branch release for this thing.
ADTRAN, Inc. OS version R10.11.0.E
Mainline Version: ENM.14.5
P4 Changelist: 117318
Built on: Wed Jan 22 15:35:19 CST 2014
Upgrade key: f34530f2cac17b67f7ee36c3b97ed4fa
Hardware version F.188.8.131.52
Boot ROM version R10.10.0.B1
Built on: Fri Jan 10 11:09:36 CST 2014
Copyright (c) 1999-2014, ADTRAN, Inc.
Platform: NetVanta 4660 EoX L2/L3 Router, part number 17004660F1
Serial number LBADTNXXXXXXXXX
Flash: 97001472 bytes DRAM: 526467072 bytes
xxxxxxxxx-r1 uptime is 0 days, 0 hours, 4 minutes, 46 seconds
System returned to ROM by Soft Reset
Current system image file is "NV4660A-R10-11-0-E.biz"
Boot system image file is "NV4660A-R10-11-0-E.biz"
Primary system configuration file is "startup-config"
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Were you able to see the CPU information or capture the "show interface" output while it was in its sluggish state?
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Neither show interface nor show process cpu show anything of interest. There's no interface errors or spikes in CPU utilization. No real explanation for why it's happening. At first I thought it was a problem with the BGP process, but even after the BGP configuration is removed it was still happening. The router functions normally in terms of routing packets even while the CLI is acting up. This unit is in production now, so I can't do any more testing with it. If it happens again with the next NV4460, I'll open a support ticket for it.
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