Support Support Downloads Knowledge Base Case Manager My Juniper Community

Knowledge Base

Search our Knowledge Base sites to find answers to your questions.

Ask All Knowledge Base Sites All Knowledge Base Sites JunosE Defect (KA)Knowledge BaseSecurity AdvisoriesTechnical BulletinsTechnotes Sign in to display secure content and recently viewed articles

ACX next-hop scaling limit

0

0

Article ID: KB30460 KB Last Updated: 25 May 2016Version: 1.0
Summary:

When receiving acx_nh_tag_hw_install() logs, ACX might be affected by scaling. The effect is that next-hop cannot be added on PFE.

Symptoms:

ACX1000/2000 is able to install up to 2000 next-hops for MPLS labels received from ldp/rsvp. In the control plane, the route is learned correctly, but has a “discard” next-hop in forwarding table.

lab@001> show route 20.4.185.0/24

inet.0: 2221 destinations, 2221 routes (2221 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

20.4.185.0/24 *[OSPF/10] 3d 23:51:56, metric 4
> to 20.1.1.1 via ge-0/1/0.0

inet.3: 2190 destinations, 2190 routes (2190 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

20.4.185.0/24 *[LDP/9] 3d 23:51:53, metric 1
> to 20.1.1.1 via ge-0/1/0.0, Push 313344

lab@001> show route forwarding-table family mpls label 313344
Routing table: default.mpls
MPLS:
Destination Type RtRef Next hop Type Index NhRef Netif
default perm 0 dscd 50 1

Routing table: __mpls-oam__.mpls
MPLS:
Destination Type RtRef Next hop Type Index NhRef Netif
default perm 0 dscd 531 1
Cause:
Jun 8 23:20:12 jtac-acx1000-fa-1 feb0 ACX_NH::acx_nh_tag_hw_install(),1911:acx_nh_tag_hw_install: BCM L3 Egress create object failed for NH 3984 (-14:No resources for operation), BCM NH Params: PFE:0, Port:5, VLAN:3013, L3_INTF:14 Flags: 0x0, mpls_qos_map_id:0
Jun 8 23:20:12 jtac-acx1000-fa-1 feb0 ACX_NH::acx_nh_tag_hw_install(),1915:NH-TYPE:2, NH-PROTO:5
Jun 8 23:20:12 jtac-acx1000-fa-1 feb0 nh_ucast_install:726Failed to create platform state for nh (3984), Unknown error: -14
Jun 8 23:20:12 jtac-acx1000-fa-1 feb0 nh_ucast_add:199Failed to install in platform, Unknown error: -14 for NH (3984)
Jun 8 23:20:13 jtac-acx1000-fa-1 feb0 nh_add_helper:916Type specific Add failed Unknown error: -14 nh-id:3984
Jun 13 22:28:55 jtac-acx1000-fa-1 feb0 (acx_rt_tag_entry_install:MPLS route add failed) Reason : -14, No resources for operation
Jun 13 22:28:55 jtac-acx1000-fa-1 feb0 acx_bcm_mpls_tunnel_switch_add: tunnel switch add failed (-14:No resources for operation)

Solution:

To alleviate this problem:

  • Reduce the number of routes/FEC advertised from upstream router.
  • Implement an import policy if ldp is used for label distribution.

Comment on this article > Affected Products Browse the Knowledge Base for more articles related to these product categories. Select a category to begin.

Getting Up and Running with Junos

Getting Up and Running with Junos Security Alerts and Vulnerabilities Product Alerts and Software Release Notices Problem Report (PR) Search Tool EOL Notices and Bulletins JTAC User Guide Customer Care User Guide Pathfinder SRX High Availability Configurator SRX VPN Configurator Training Courses and Videos End User Licence Agreement Global Search