[c-nsp] Router memory problem
Chuck Church
chuckchurch at gmail.com
Wed Oct 26 15:56:00 EDT 2016
That’s pretty low. Under a megabyte for largest block. Is soft reconfig enabled? Maybe turn that off, or like you said filter some routes.
Chuck
From: Joseph Mays [mailto:mays at win.net]
Sent: Wednesday, October 26, 2016 3:06 PM
To: Chuck Church <chuckchurch at gmail.com>; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Router memory problem
Perhaps. Looks like, but I don't know if it's TOO low.
core-gw1.noc#show mem
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
Processor 6381CC60 444478368 438972176 5506192 945056 898812
I/O E000000 33554432 10948872 22605560 22287760 22426364
Maybe if I reduce the size of the bgp tables.
-----Original Message-----
From: Chuck Church
Sent: Wednesday, October 26, 2016 2:51 PM
To: 'Joseph Mays' ; cisco-nsp at puck.nether.net <mailto:cisco-nsp at puck.nether.net>
Subject: RE: [c-nsp] Router memory problem
Is the router out of RAM? A really low memory condition might cause this. 'show mem' or 'show log' (if configured) might show some malloc errors if that is the issue.
Chuck
-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Joseph Mays
Sent: Wednesday, October 26, 2016 2:28 PM
To: cisco-nsp at puck.nether.net <mailto:cisco-nsp at puck.nether.net>
Subject: [c-nsp] Router memory problem
I’m dealing with a serious problem on a router I can only connect to remotely. Show run on the router returns nothing.
core-gw1.noc#show run
core-gw1.noc#
The running config is definitely there, though and the router is operational. And interestingly the system that copies the router’s config every night seems to have no problem pulling it down via tftp. And I can add and remove config commands and have them become active, even though I can’t see the config when it’s running.
I tried copying the running config to the startup config and got an error.
core-gw1.noc#dir nvram:
Directory of nvram:/
488 -rw- 19717 <no date> startup-config
489 ---- 1157 <no date> private-config
490 -rw- 19717 <no date> underlying-config
1 ---- 46 <no date> persistent-data
2 -rw- 0 <no date> ifIndex-table
3 -rw- 4 <no date> rf_cold_starts
522232 bytes total (498234 bytes free)
core-gw1.noc#write mem
startup-config file open failed (Not enough space)
I found that any command I try with regards to the startup config gets the same result. I concluded that the nvram: must be corrupt. So I did an “erase” to reformat and clear it, and that went fine. so then I tried to write the startup-config again and had the same problem.
core-gw1.noc#erase nvram:
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm] [OK] Erase of nvram: complete core-gw1.noc#dir nvram:
Directory of nvram:/
508 -rw- 0 <no date> startup-config
509 ---- 0 <no date> private-config
510 -rw- 0 <no date> underlying-config
1 ---- 46 <no date> persistent-data
2 -rw- 0 <no date> ifIndex-table
3 -rw- 4 <no date> rf_cold_starts
522232 bytes total (519108 bytes free)
core-gw1.noc#copy run start
Destination filename [startup-config]?
startup-config file open failed (Not enough space)
So now I am in a position where I don’t dare reboot the router because it has no startup config. I did try tftping the backup config to nvram:, and it worked find as long as I gave it another name.
core-gw1.noc#copy tftp nvram:
Address or name of remote host [admin2.win.net]?
Source filename [core-gw1.noc-confg.noALW]? noc-config Destination filename [noc-config]?
Accessing tftp://admin2.win.net/noc-config...
Loading noc-config from 216.24.27.2 (via FastEthernet2/0): !!!!!!!
[OK - 34368 bytes]
34368 bytes copied in 0.756 secs (45460 bytes/sec) core-gw1.noc#dir nvram:
Directory of nvram:/
508 -rw- 0 <no date> startup-config
509 ---- 0 <no date> private-config
510 -rw- 0 <no date> underlying-config
1 ---- 46 <no date> persistent-data
2 -rw- 0 <no date> ifIndex-table
3 -rw- 4 <no date> rf_cold_starts
4 -rw- 34368 <no date> noc-config
But when I tried to rename noc-config to startup-config, it gave the same space error. As does deleting startup-config, or any attempt to do anything to the startup-config file.
Here is the show ver info on the router.
Cisco Internetwork Operating System Software IOS (tm) 7200 Software (C7200-IK9SU2-M), Version 12.3(23), RELEASE SOFTWARE (fc5) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2007 by cisco Systems, Inc.
Compiled Tue 24-Jul-07 21:42 by stshen
Image text-base: 0x60008AF4, data-base: 0x61F53280
ROM: System Bootstrap, Version 12.2(20030826:190624) [BLD-npeg1_rommon_r11 102], DEVELOPMENT SOFTWARE
BOOTLDR: 7200 Software (C7200-KBOOT-M), Version 12.2(15)B, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
core-gw1.noc uptime is 11 hours, 10 minutes System returned to ROM by reload at 03:00:12 EDT Wed Oct 26 2016 System restarted at 03:02:54 EDT Wed Oct 26 2016 System image file is "disk2:c7200-ik9su2-mz.123-23.bin"
Last reload reason: Reload command
This product contains cryptographic features and is subject to United States and local country laws governing import, export, transfer and use. Delivery of Cisco cryptographic products does not imply third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to export at cisco.com <mailto:export at cisco.com> .
cisco 7206VXR (NPE-G1) processor (revision A) with 491520K/32768K bytes of memory.
Processor board ID 20399590
SB-1 CPU at 700MHz, Implementation 1, Rev 0.2, 512KB L2 Cache
6 slot VXR midplane, Version 2.0
Last reset from power-on
Bridging software.
X.25 software, Version 3.0.0.
PCI bus mb1 (Slots 1, 3 and 5) has a capacity of 600 bandwidth points.
Current configuration on bus mb1 has a total of 600 bandwidth points.
This configuration is within the PCI bus capacity and is supported.
PCI bus mb2 (Slots 2, 4 and 6) has a capacity of 600 bandwidth points.
Current configuration on bus mb2 has a total of 780 bandwidth points.
The set of PA-2FE, PA-POS-2OC3, and I/O-2FE qualify for "half bandwidth points" consideration, when full bandwidth point counting results in oversubscription, under the condition that only one of the two ports is used. With this adjustment, current configuration on bus
mb2 has a total of 580 bandwidth points.
This configuration is within the PCI bus capacity and is supported under the above condition.
Please refer to the following document "Cisco 7200 Series Port Adaptor Hardware Configuration Guidelines" on Cisco.com <http://www.cisco.com> for c7200 bandwidth points oversubscription and usage guidelines.
5 FastEthernet/IEEE 802.3 interface(s)
4 Gigabit Ethernet/IEEE 802.3 interface(s)
2 Serial network interface(s)
509K bytes of non-volatile configuration memory.
62976K bytes of ATA PCMCIA card at slot 2 (Sector size 512 bytes).
16384K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x2102
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