Cisco XR 12000 Series Getting Started Guide

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Cisco IOS XR Getting Started Guide for the Cisco XR 12000 Series Router
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Chapter 6 Troubleshooting the Cisco IOS XR Software
Memory Warnings in Configuration Sessions
Failure to take action can result in a worsening situation and eventual impact to router operations.
“ERROR! MEMORY IS IN SEVERE (or CRITICAL) STATE”
When the memory is in a severe or critical state, router operation and performance is likely to be
affected. Regular users are not allowed to enter configuration mode. Only lr-root owners can enter
configuration mode to free memory by removing configurations.
In some situations, the commit command is not allowed. Users with lr-root access can still use the
commit force command to apply configurations that reduce memory usage. Reducing memory usage
normally means removing configurations, but a user can also add configurations that reduce memory
usage. For example, configuring the shutdown command on an interface could cause numerous routes
to be purged from Border Gateway Protocol (BGP), the Routing Information Base (RIB), and
Forwarding Information Base (FIB) configurations.
Caution The commit force command should be used only to apply configurations that reduce memory usage.
Adding configurations that increase memory usage could result in serious loss of router operation.
Displaying System Memory Information
To display a high level summary of system memory, enter the show memory summary command.
Table 6-2 describes the meaning of each heading.
RP/0/0/CPU0:router# show memory summary
Tue Jun 1 00:02:03.826 DST
Physical Memory: 4096M total (2020M available)
Application Memory : 3818M (2020M available)
Image: 50M (bootram: 50M)
Reserved: 226M, IOMem: 2028M, flashfsys: 0
Total shared window: 32M
RP/0/0/CPU0:router#
To display general memory usage for the device as a whole and by process, enter the show memory
command. Table 6-2 describes the meaning of each heading.
RP/0/0/CPU0:router# show memory
Tue Jun 1 00:05:44.927 DST
Physical Memory: 4096M total (2020M available)
Application Memory : 3818M (2020M available)
Image: 50M (bootram: 50M)
Reserved: 226M, IOMem: 2028M, flashfsys: 0
Shared window tunl_gre: 39K
Shared window statsd_db: 67K
Shared window l2fib: 323K
Shared window li: 3K
Shared window ipv4_fib: 1M
Shared window ifc-protomax: 1M
Shared window ifc-mpls: 7M
Shared window ifc-ipv6: 6M
Shared window ifc-ipv4: 10M
Shared window mfwdv6: 449K
Shared window mfwd_info: 733K
Shared window infra_statsd: 3K
Shared window im_rd: 1M
Shared window im_db: 1M

Cisco XR 12000 Series Specifications

General

Brand	Cisco
Model	XR 12000 Series
Category	Network Router
Language	English