Information Technology Reference
In-Depth Information
Table10-3
RSRB: Host Cannot Connect to Server (Peers Not Open) (continued)
Possible Problem
Solution
Encapsulation
mismatch
1.
Use the
show interfaces
exec command to verify that the
interface and line protocol are up. If the status line indicates
any other state, refer to Chapter 15.
2.
Verify that the configured encapsulation type matches the
requirements of the network to which the serial interface is
attached.
For example, if the serial interface is attached to a leased line but
the configured encapsulation type is Frame Relay, there is an
encapsulation mismatch.
To resolve the mismatch, change the encapsulation type on
the serial interface to the type appropriate for the attached
network—for example, change from frame-relay to hdlc.
3.
continues
Hop count
exceeded
1.
Use the
show
protocol
route
command to check the hop
count values on routers and bridges in the path. Packets that
exceed the hop count are dropped.
Alternatively, you can enable the
debug source event
privileged
exec command to see whether packets are being dropped because
the hop count has been exceeded.
Caution:
Because debugging output is assigned high priority in
the CPU process, it can render the system unusable. For this
reason, use
debug
commands only to troubleshoot specific
problems or during troubleshooting sessions with Cisco
technical support staff. Moreover, it is best to use
debug
commands during periods of lower network traffic and fewer
users. Debugging during these periods decreases the likelihood
that increased
debug
command processing overhead will affect
system use.
2.
Increase the hop count if it is less than the default value, 7.
Otherwise, the network must be redesigned so that no
destination is greater than seven hops away.
1.
TCP=Transmission Control Protocol
2.
FST=Fast Sequenced Transport
RSRB: Host Cannot Connect to Server (Peers Open)
Symptom:
Hosts cannot make connections to servers across a router configured as an RSRB. The output
of the
show source-bridge
privileged exec command shows that SRB peers are open.
The following is an example of output from the
show source-bridge
command:
ionesco#
show source-bridge
[...]
Peers: state lv pkts_rx pkts_tx expl_gn drops TCP
TCP 150.136.92.92 - 2 0 0 0 0 0
TCP 150.136.93.93 open 2* 18 18 3 0 0
[...]
