# Monitoring RSVP Path State Control Blocks, Reservation State Control Blocks, or Sessions

#### Purpose

Display RSVP path state control blocks, reservation state control blocks, or session information about the virtual router to assist in debugging. A session can be any of the following:

- ingress session—Originating on the router
- egress session—Terminating on the router
- transit session—Travelling through the router

#### Action

To display path state control blocks for an ingress session:

    host1#show mpls rsvp psb
      PSB: Sender 223.10.1.1 LSPId 1 timeout -- InLabel --
           PHopIntf
           IncomingIntf
           OutgoingIntf ATM2/0.1
           PHopAddr 0.0.0.0 m_ipNextHopAddr 221.1.1.1
           NextHop 221.1.1.1/255.255.255.255 (strict)
           LabelRange --
           SenderTSpec CType IntServ Controlled Load
                       Token Bucket Rate 0
                       Token Bucket Size 0
                       Peak Data Rate 0
                       Min Policed Unit 0
                       Max Packet Size 0
           Flags : InUse
                   RroRequired
                   PathRefreshSent

To display reservation state control blocks for an ingress session:

    host1#show mpls rsvp rsb
      RSB: Timeout 157500 label 1/33
           Flags : InUse
                   StyleConverted

To display RSVP-TE session information:

    host1:two#show mpls rsvp sessions
    Destination 222.9.3.1 TunnelId 1 Extended Tunnel Id 223.10.1.1
      PSB: Sender 223.10.1.1 LSPId 1 timeout 157500 InLabel 17
           Associated Minor Interface: Tunnel 223.10.1.1:1
           PHopIntf ATM2/0.1
           IncomingIntf ATM2/1.1
           OutgoingIntf ATM2/0.3
           PHopAddr 221.1.1.2 m_ipNextHopAddr 122.1.1.1
           NextHop 122.1.1.1/255.255.255.255 (strict)
           LabelRange (generic) min 0 max 1048575
           SenderTSpec CType IntServ Controlled Load
                       Token Bucket Rate 0
                       Token Bucket Size 0
                       Peak Data Rate 0
                       Min Policed Unit 0
                       Max Packet Size 0
           RRO IPv4 hop 221.1.1.2 (strict)
           ADSPEC --
           IN ERO IPv4 hop 221.1.1.1 (strict)
                  IPv4 hop 122.1.1.1 (strict)
           OUT ERO IPv4 hop 122.1.1.1 (strict)
           SES ATTR Setup Pri 4, Hold Pri 4, name --
                    Flags : IngressReRoute
           TTC --
           Policy Object --
           Unknown Objects --
           Flags : InUse
                   PathRefreshSent

      RSB: Timeout 157500 label 16
           Associated Minor Interface: Tunnel 223.10.1.1:1
           FlowSpec CType IntServ Controlled Load
                    Token Bucket Rate 0
                    Token Bucket Size 0
                    Peak Data Rate 0
                    Min Policed Unit 0
                    Max Packet Size 0
           RRO IPv4 hop 122.1.1.1 (strict)
           Policy Object --
           Unknown Objects --
           Flags : InUse
                   StyleConverted
                   ResvRefrSent

#### Meaning

Table 81 lists the show mpls rsvp command output fields.

Table 81: show mpls rsvp Output Fields

Field Name | Field Description
--- | ---
PSB | Path state control block
RSB | Reservation state control block
Sender | IP address of PSB or RSB sender
LSPId | ID of LSP
timeout | Period of time in milliseconds before PSB/RSB times out if no refresh arrives.
InLabel | Incoming label information
Associated tunnel | Tunnel identifier for minor interface for which the RSVP information is displayed
PHopIntf | Penultimate hop interface
IncomingIntf | Incoming interface
OutgoingIntf | Outgoing interface
PHopAddr | Penultimate hop address
m_ipNextHopAddr | Next hop address
NextHop | Type of next hop (loose, strict, session)
LabelRange | RSVP session label range
SenderTSpec | Traffic parameters for the sender
Token Bucket Rate | Sender's description of generated traffic, in kbps
Token Bucket Size | Sender's description of generated traffic, in kbps
Peak Data Rate | Lender's peak traffic generation rate
Min Policed Unit | Minimum packet size generated by sender
Max Packet Size | Maximum packet size generated by sender
RRO | Record route object
ADSPEC | Indicates presence of this QoS object
IN ERO | Incoming explicit route object
OUT ERO | Outgoing explicit route object
SES ATTR | RSVP session attributes
Setup Pri | Setup priority of tunnel
Hold Pri | Hold priority of tunnel
name | Name of the tunnel
Flags | One or more of the IngressReRoute (the ingress router can reroute the LSP), Local Protection (routers can use local repair mechanism to fix the LSP; this fix might violate the explicit route object associated with the LSP), and MergingPermitted (LSPs can be merged) flags
TTC | Indicates presence of the traffic trunk classifier object
Policy Object | Indicates presence of the policy object
Unknown Objects | Indicates presence objects not defined by the RSVP specification
PSB Flag InUse | PSB in use
PSB Flag Deleted | PSB deleted
PSB Flag NonRsvp | Non-RSVP hop present
PSB Flag RouteChangeNotify | Route change notification received
PSB Flag EroChanged | Explicit route object changed
PSB Flag NextHopChanged | Next hop has changed
PSB Flag RtNextHopChanged | Routing table next hop changed
PSB Flag EgressStatusChanged | PSB egress status has changed
PSB Flag QosChanged | QoS characteristics have changed
PSB Flag LabelChanged | Label has changed
PSB Flag ResvRefreshNeeded | Reservation refresh needed
PSB Flag PathRefreshNeeded | Path refresh needed
PSB Flag RroRequired | Record route object required
PSB Flag Egress | Session is egress
PSB Flag PathRefreshSent | Path refresh sent
PSB Flag EgressFilterFF | Egress filter reservation style Fixed Filter
PSB Flag QosCorrectionNeeded | QoS correction needed
PSB Flag IsPathTrigger | Has path refresh been triggered
RSB Flag InUse | RSB in use
RSB Flag Deleted | RSB deleted
RSB Flag RcvdAck | Acknowledgment received
RSB Flag StyleConverted | Reservation style converted to shared explicit
RSB Flag IsPathTrigger | Reservation refresh triggered
Destination | RSVP session destination address
TunnelId | Number representing the RSVP session tunnel ID
Extended Tunnel Id | IP address representing the RSVP session extended tunnel ID

#### Related Documentation

- show mpls rsvp