[j-nsp] Nexthop index allocation failed: regular index space exhausted

[Peter Brenner]

Hello,

today the following appeared in the logs of a Juniper M160 running JunOS 
7.6R1.10
and hasn't stopped yet.

Mar 18 12:54:47  ham-cr2-re0 /kernel: Nexthop index allocation failed: 
regular index space exhausted
Mar 18 12:55:03  ham-cr2-re0 last message repeated 24 times
Mar 18 12:57:03  ham-cr2-re0 last message repeated 116 times
Mar 18 13:00:03  ham-cr2-re0 last message repeated 175 times

The router isn't learning new arp entries and lost about 1000.
Normally around 8500 arp entries are active at any given time.
de-pb at ham-cr2-re0> show arp no-resolve | count
Count: 7630 lines

When I try to ping a directly connected host whose arp entry has been
lost, I get:
de-pb at ham-cr2-re0> show pfe route ip prefix xx.xx.xx.xx

Slot 2

IPv4 Route Table 0, default.0, 0x0:
Destination                       NH IP Addr      Type     NH ID Interface
--------------------------------- --------------- -------- ----- ---------
xx.xx.xx.xx                       xx.xx.xx.xx     Unicast  4290 ge-0/1/0.3

de-pb at ham-cr2-re0> ping xx.xx.xx.xx
PING xx.xx.xx.xx (xx.xx.xx.xx): 56 data bytes
ping: sendto: Cannot allocate memory
ping: sendto: Cannot allocate memory
ping: sendto: Cannot allocate memory
ping: sendto: Cannot allocate memory
^C
--- xx.xx.xx.xx ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss

Any help is appreciated, Thanks in advance,
-- peter

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