/stats/slb/maint
SLB Maintenance Statistics
 
SLB Maintenance Stats:
Maximum sessions: 13999909
Current sessions: 0
4 second average: 0
64 second average: 0
Terminated sessions: 0
Allocation failures: 0
UDP datagrams: 0
Non TCP/IP frames: 0
Non IP frames: 0
Incorrect VIPs: 0
Incorrect Vports: 0
Packets drops: vip is not up 0
No available real server: 0
Backup server activations: 0
Overflow server activations: 0
Filtered (denied) frames: 0
AE (ignored) frames: 0
Discard frames: 0
LAND attacks: 0
No TCP control bits: 0
Invalid reset packet drops: 0
Out of State FIN Pkt drops: 0
Total IP fragment sessions: 0
Current IP4 fragment sessions 0
IP4 fragment discards: 0
Current IP6 fragment sessions 0
IP6 fragment discards: 0
IP fragment table full: 0
Current IPF buffer sessions: 0
Highest IPF buffer sessions: 0
IPF buffer alloc fails: 0
IPF SP buffer alloc fails: 0
SP buffer too low: 0
Exceeded 50 OOO packets: 0
IPF invalid lengths: 0
IPF Null Payloads: 0
Fragment Overlaps: 0
Duplicate fragments: 0
Current real service stats:             0
Real service stats failures:            0
Session setup limit: 0
Session setup bucket: 0
Session setup discards: 0
Free Service pool entries: 8192
Current IP6 sessions: 0
Incorrect IP6 VIPs: 0
Incorrect IP6 Vports: 0
Unrecognized IP6 next header: 0
Unsupported IP6 ext header: 0
No route to forward IP6 packet: 0
IP6 packets drops: 0
SLB Maintenance statistics are described in the following table.
 
Server Load Balancing Maintenance Statistics (/stats/slb/maint) 
Statistic
Description
Maximum sessions
The maximum number of simultaneous sessions supported.
Current Sessions
The number of session bindings currently in use (the last four and 64 seconds).
Terminated Sessions
The number of sessions removed from the session table because the server assigned to them failed, and graceful server failure was not enabled.
Allocation Failures
The number of instances when Alteon ran out of available sessions for a port.
UDP Datagrams
The number of times that the virtual server IP address and MAC are receiving UDP frames when UDP balancing is not turned on.
Non TCP/IP Frames
The number of non-TCP/IP based frames received by the virtual server.
Non IP Frames
The number of non-IP based frames received by the virtual server.
Incorrect VIPs
The number of times Alteon received a Layer 4 request for a virtual server which was not configured.
Incorrect Vports
A dropped frames counter that indicates that the virtual server has received frames for TCP/UDP services that have not been configured. Normally this indicates a mis-configuration on the virtual server or the client, but it may indicate a potential security probing application, like SATAN.
Packets drops: vip is not up
The number of frames dropped either because the virtual server is down or the Acceleration Engine stopped traffic due to memory overload.
No Available Real Server
A dropped frames counter that indicates that all real servers are either out of service or at their maxcon limit.
Backup Server Activations
The number of times a real server failure has occurred and caused a backup server to be brought online.
Overflow Server Activations
The number of times a real server has reached the maxcon limit and caused an overflow server to be brought online.
Filtered (Denied) Frames
The number of frames that were dropped because they matched an active filter with the deny action set.
AE (ignored) frames
The number of frames coming from the Acceleration Engine that are ignored in the SP due to IP version mismatch or invalid metadata (the PBTI does not contain the service ID or server ID).
Discard frames
The number of frames dropped by the Acceleration Engine because action type of service set to discard.
LAND attacks
This counter increases whenever a packet has the same source and destination IP addresses and ports.
No TCP Control Bits
The number of packets that were dropped because the packet had no control bits set in the TCP header.
Invalid reset packet drops
The number of packets that were dropped because the packet had an invalid reset flag set.
Out of State FIN Pkt drops
The number of out of state FIN packets dropped.
Total IP fragment sessions
The number of fragment sessions processed by Alteon.
Current IP4 fragment sessions
The current IPv4 fragment sessions.
IP4 fragment discards
The number of IPv4 fragments discarded.
Current IP6 fragment sessions
The current number of IPv6 fragment sessions.
IP6 fragment discards
The number of IPv6 fragments discarded.
IP fragment table full
The number of times the IP fragment table is full.
Current IPF buffer sessions
The current number of IP fragment buffer sessions.
Highest IPF buffer sessions
The number of highest IP fragment buffer sessions.
IPF buffer alloc fails
The number of times the IP fragment buffer allocation failed.
IPF SP buffer alloc fails
The number of times IP fragment SP buffer allocation fails.
SP buffer too low
The number of times the SP buffer is low.
Exceeded 50 OOO packets
The number of times an IP fragment exceeded 50 OOO packets.
IPF invalid lengths
The number of IP fragment invalid lengths.
IPF null Payloads
The number of IP fragment null payloads.
Fragment Overlaps
The number of fragment overlaps.
Duplicate fragments
The number of duplicate fragments.
Current real service stats
The number of current virtual service stats from all Alteon switch processors. Displays when /cfg/slb/adv/vstat is enabled.
Real service stats failures
The total number of out-of-entries for all Alteon switch processors. Displays when /cfg/slb/adv/vstat is enabled.
Free Service pool entries
The number of free service pool entries.
Current IP6 sessions
The current number of IPv6 sessions.
Incorrect IP6 VIPs
The number of incorrect IPv6 VIPs.
Incorrect IP6 Vports
The number of incorrect IPv6 vports.
Unrecognized IP6 next header
The number of unrecognized IPv6 next headers.
Unsupported IP6 ext header
The number of unsupported IPv6 ext headers.
No route to forward IP6 packet
The number of times no route to forward IPv6 packet.
IP6 packets drops
The number of IPv6 packets dropped.