Chapter 8
Troubleshooting the ATM SPAs
Performing Basic Interface Troubleshooting
You can perform most of the basic interface troubleshooting using the show interface atm, show atm
interface atm, and show ip interface commands and examining several areas of the output to determine
how the interface is operating.
The following example shows output from the show atm interface atm and show ip interface
commands.
Router# show atm interface atm 0/2/2
Interface ATM0/2/2:
AAL enabled:
Max. Datagram Size: 4528
PLIM Type: SONET - 155000Kbps, TX clocking: LINE
Cell-payload scrambling: ON
sts-stream scrambling: ON
5 input, 5 output, 0 IN fast, 0 OUT fast, 0 out drop
Avail bw = 149760
Config. is ACTIVE
Router# show ip interface atm 0/2/2.1
ATM0/2/2.1 is up, line protocol is up
Internet address is 2.4.0.2/24
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 4470 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Outgoing access list is not set
Inbound
Proxy ARP is enabled
Local Proxy ARP is disabled
Security level is default
Split horizon is disabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP Flow switching is disabled
IP CEF switching is enabled
IP Distributed switching is disabled
IP CEF switching turbo vector
IP Null turbo vector
Associated unicast routing topologies:
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast, CEF
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Probe proxy name replies are disabled
Policy routing is disabled
Network address translation is disabled
BGP Policy Mapping is disabled
Input features: MCI Check
OL-14127-08
AAL5
, Maximum VCs: 4095, Current VCCs: 1
access list is not set
Topology "base", operation state is UP
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
Performing Basic Interface Troubleshooting
8-3