Cisco Cisco Nexus 5010 Switch Guida Alla Risoluzione Dei Problemi
Cisco Bug IDCSCtn95676 (3k)
On a Nexus 30xx Series switch, "Failed to allocate shared memory mfwd_mrib_get_route_buffer()"
might be displayed.
might be displayed.
This message indicates the temporary condition of no buffers available to process when a high rate of
Internet Group Management Protocol (IGMP) join/leave that hit the CPU. This condition is transient
and has no overal functional impact on the system.
Internet Group Management Protocol (IGMP) join/leave that hit the CPU. This condition is transient
and has no overal functional impact on the system.
The bug was filed to document the behavior. This is not a software defect.
1.
Cisco Bug IDCSCtl73025 (5k)
This message is logged on the Nexus 55xx due to two reasons:
Multiple multicast joins occur
The Nexus 55xx should be able to handle 4,000 mroutes. This message typically starts
logging around 1,000 mroutes. This does not affect production traffic.
logging around 1,000 mroutes. This does not affect production traffic.
The rest of the entries are discovered over time.
♦
An unstable state occurs
This might be a combination of a large number of mroutes (some without a valid route to the
sources).
sources).
Obtain the output:
show ip mroute sum vrf all
Example:
IP Multicast Routing Table for VPN Routing and Forwarding (VRF) "default"
Total number of routes: 923
Total number of (*,G) routes: 0
Total number of (S,G) routes: 922
Total number of (*,G−prefix) routes: 1
Group count: 921, rough average sources per group: 1.0
Total number of (*,G) routes: 0
Total number of (S,G) routes: 922
Total number of (*,G−prefix) routes: 1
Group count: 921, rough average sources per group: 1.0
♦
2.
CSCtl73025 is fixed in Version: 6.0(2)N1(1).
Updated: Sep 13, 2013
Document ID: 116478