Alcatel-Lucent 7450 - Page 594

Base Resource Handling Procedures
Page 594 7450 ESS MPLS Guide
Num OLoad Interfaces: 4 <----- //#LDP interfaces resource in exhaustion
Num Targ Sessions: 72 Num Active Targ Sess: 62
Num OLoad Targ Sessions: 7 <----- //#T-LDP peers in resource exhaustion
Num Addr FECs Rcvd: 0 Num Addr FECs Sent: 0
Num Addr Fecs OLoad: 1 <----- //# of local/remote unicast FECs in Overload
Num Svc FECs Rcvd: 0 Num Svc FECs Sent: 0
Num Svc FECs OLoad: 0 <----- // # of local/remote service Fecs in Overload
Num mcast FECs Rcvd: 0 Num Mcast FECs Sent: 0
Num mcast FECs OLoad: 0 <----- // # of local/remote multicast Fecs in Over-
load
{...... snip......}
When at least one local FEC has been set in overload the following trap will occur:
23 2013/07/17 15:35:47.84 PST MINOR: LDP #2002 Base LDP Resources Exhausted "Instance state
changed - vRtrID: 1, administrative state: inService, operationa l state: inService"
Step 3
After the user has detected that at least, one link LDP or T-LDP adjacency has been brought down
by the resource exhaustion mechanism, he/she must protect the router by applying one or more of
the following to free resources up:
• Identify the source for the [unicast/multicast/service] FEC flooding.
• Configure the appropriate [import/export] policies and/or delete the excess [unicast/
multicast/service] FECs not currently handled.
Step 4
Next, the user has to manually attempt to clear the overload (no resource) state and allow the
router to attempt to restore the link and targeted sessions to its peer.
Please note that due to the dynamic nature of FEC distribution and resolution by LSR nodes, one
cannot predict exactly which FECs and which interfaces or targeted peers will be restored after
performing the following commands if the LSR activates resource exhaustion again.
One of the following commands can be used:
- [clear router ldp resource-failures]
• Clears the overload state and attempt to restore adjacency and session for LDP interfaces
and peers.
• Clear the overload state for the local FECs.
- [clear router ldp interface ifName]
- [clear router ldp peer peerAddress]
• Clears the overload state and attempt to restore adjacency and session for LDP interfaces
and peers.