A9K - Route Scale on FIB

Pedro Morais · ‎02-19-2013

Hello XR Gurus,

We are currently doing some tests with internet full routing inside two VRFs and we are encountering some issues that we would like you to help.

Scenario:

IOS-XR with 4.2.3 P image

Trident LCs

RSP-4G

Only Two VRFs configured on the box, both with full routing

Issue:

We are sending 450K V4 prefixes, plus 25K V6 prefixes with 65K /24 prefixes per each /8, which should be inside the subtree limits. Still we are getting the following error message:

LC/0/0/CPU0:Feb 19 16:42:55.833 : prm_server_tr[295]: %PLATFORM-NP-3-OOR : Routing Table Full : PRM failed to install a route (114.255.239.0/24) because the subtree was full. Each subtree is limited to 262144 routes per subtree.Subtree where install failed is 114.0.0.0/8

Although, we get this error message we can see the prefix installed on CEF HW:

RP/0/RSP0/CPU0:A9K-LAB02#

RP/0/RSP0/CPU0:A9K-LAB02#show cef vrf publico hardware ingress location 0/4/CPU0 | i 114.255.239.0/24

Tue Feb 19 17:04:40.589 WET

114.255.239.0/24 101.101.101.2 <recursive>

RP/0/RSP0/CPU0:A9K-LAB02#

Can anyone help us???

Thanks!!!

Cheers,

Pedro

Parthiv Shah · ‎02-19-2013

Hi,

Let us know what smu running on your router. Following output might be useful

show platform

show install active summary

Also check you have all the SMU recommended @

http://www.cisco.com/web/Cisco_IOS_XR_Software/pdf/ASR9000_423_Release_Recommendation.pdf

Thanks

Parthiv

Pedro Morais · ‎02-20-2013

Hi Parthiv,

Yes we have pretty much all the recommended SMUs installed. Requested outputs are below:

RP/0/RSP0/CPU0:A9K-LAB02(admin)#show platform

Wed Feb 20 10:32:46.135 WET

Node Type State Config State

-----------------------------------------------------------------------------

0/RSP0/CPU0 A9K-RSP-4G(Active) IOS XR RUN PWR,NSHUT,MON

0/RSP1/CPU0 A9K-RSP-4G(Standby) IOS XR RUN PWR,NSHUT,MON

0/FT0/SP FAN TRAY READY

0/FT1/SP FAN TRAY READY

0/0/CPU0 A9K-4T-B IOS XR RUN PWR,NSHUT,MON

0/1/CPU0 A9K-4T-B IOS XR RUN PWR,NSHUT,MON

0/4/CPU0 A9K-40GE-B IOS XR RUN PWR,NSHUT,MON

0/PM0/SP A9K-2KW-DC READY PWR,NSHUT,MON

0/PM1/SP A9K-2KW-DC READY PWR,NSHUT,MON

0/PM3/SP A9K-2KW-DC READY PWR,NSHUT,MON

0/PM4/SP A9K-2KW-DC READY PWR,NSHUT,MON

RP/0/RSP0/CPU0:A9K-LAB02(admin)#

RP/0/RSP0/CPU0:A9K-LAB02(admin)#show install active summary

Wed Feb 20 10:32:47.822 WET

Default Profile:

SDRs:

Owner

Active Packages:

disk0:asr9k-p-4.2.3.CSCud37351-1.0.0

disk0:asr9k-p-4.2.3.CSCud29892-1.0.0

disk0:asr9k-mini-p-4.2.3

disk0:asr9k-doc-p-4.2.3

disk0:asr9k-p-4.2.3.CSCub22596-1.0.0

disk0:asr9k-k9sec-p-4.2.3

disk0:asr9k-p-4.2.3.CSCuc17410-1.0.0

disk0:asr9k-mpls-p-4.2.3

disk0:asr9k-mgbl-p-4.2.3

disk0:asr9k-mcast-p-4.2.3

disk0:asr9k-p-4.2.3.CSCud07536-1.0.0

disk0:asr9k-p-4.2.3.CSCub74517-1.0.0

disk0:asr9k-p-4.2.3.CSCub96985-1.0.0

disk0:asr9k-p-4.2.3.CSCud54093-1.0.0

RP/0/RSP0/CPU0:A9K-LAB02(admin)#

Thanks!!

Parthiv Shah · ‎02-20-2013

Could you try following config.

vrf <>
mode big

Please provide following

show cef ipv4 summary location all

show cef ipv6 summary location all

show tech cef

Thanks

Parthiv

Pedro Morais · ‎02-22-2013

Hi Parthiv,

Strangely (or not) it worked with "mode big"... However I do not understand why, since I only have two VRFs configured on the router. Any idea?

Do you still want the requested outputs?

Cheers,

Pedro

Pedro Morais · ‎02-22-2013

Hi Parthiv,

we did some more tests with and without "mode big". Please take a look at the bellow output:

RP/0/RSP0/CPU0:A9K-LAB02#conf t

RP/0/RSP0/CPU0:A9K-LAB02(config)#vrf telepac

RP/0/RSP0/CPU0:A9K-LAB02(config-vrf)#mode big

RP/0/RSP0/CPU0:A9K-LAB02(config-vrf)#commit

Fri Feb 22 15:37:16.352 WET

RP/0/RSP0/CPU0:A9K-LAB02(config-vrf)#

RP/0/RSP0/CPU0:A9K-LAB02#

RP/0/RSP0/CPU0:A9K-LAB02#show uid data location 0/4/CPU0 GigabitEthernet0/4/0/23 ingress | i Table Fri Feb 22 15:38:42.259 WET

Table ID 0x200

RP/0/RSP0/CPU0:A9K-LAB02#conf

Fri Feb 22 15:39:51.002 WET

RP/0/RSP0/CPU0:A9K-LAB02(config)#

RP/0/RSP0/CPU0:A9K-LAB02(config)#vrf telepac

RP/0/RSP0/CPU0:A9K-LAB02(config-vrf)#no mode big

RP/0/RSP0/CPU0:A9K-LAB02(config-vrf)#commit

Fri Feb 22 15:39:57.583 WET

RP/0/RSP0/CPU0:A9K-LAB02(config-vrf)#

RP/0/RSP0/CPU0:A9K-LAB02#show uid data location 0/4/CPU0 GigabitEthernet0/4/0/23 ingress | i Table Fri Feb 22 15:40:00.285 WET

Table ID 0x1200

RP/0/RSP0/CPU0:A9K-LAB02#conf

Fri Feb 22 15:40:15.187 WET

RP/0/RSP0/CPU0:A9K-LAB02(config)#

RP/0/RSP0/CPU0:A9K-LAB02(config)#vrf telepac

RP/0/RSP0/CPU0:A9K-LAB02(config-vrf)#mode big

RP/0/RSP0/CPU0:A9K-LAB02(config-vrf)#commit

Fri Feb 22 15:40:19.577 WET

RP/0/RSP0/CPU0:A9K-LAB02(config-vrf)#exit

RP/0/RSP0/CPU0:A9K-LAB02(config)#exit

RP/0/RSP0/CPU0:A9K-LAB02#show uid data location 0/4/CPU0 GigabitEthernet0/4/0/23 ingress | i Table

Fri Feb 22 15:40:23.947 WET

Table ID 0x300

RP/0/RSP0/CPU0:A9K-LAB02#admin

Fri Feb 22 15:40:28.559 WET

RP/0/RSP0/CPU0:A9K-LAB02(admin)#reload location all Fri Feb 22 15:40:32.356 WET

Preparing system for backup. This may take a few minutes especially for large configurations.

Status report: node0_RSP0_CPU0: START TO BACKUP

Status report: node0_RSP0_CPU0: BACKUP HAS COMPLETED SUCCESSFULLY [Done] Proceed with reload? [confirm]

This node received reload command. Reloading in 5 secs

Connection to 172.25.200.6 closed by foreign host.

bash-3.00#

bash-3.00# telnet 172.25.200.6

Trying 172.25.200.6...

Connected to 172.25.200.6.

Escape character is '^]'.

User Access Verification

Username: admin

Password:

RP/0/RSP0/CPU0:A9K-LAB02#

RP/0/RSP0/CPU0:A9K-LAB02#show uid data location 0/4/CPU0 GigabitEthernet0/4/0/23 ingress | i Table

Fri Feb 22 15:58:04.109 WET

Table ID 0x200

Any comment?

Cheers,

PM