Specifications

Table Of Contents
3-37
Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
Chapter 3 Operations
Configuring PPP and Authentication
Step 2 Inspect the IP settings of the interface. Notice that IP fast switching is disabled, because TCP/IP header
compression is enabled. Turn off TCP/IP header compress to enable fast switching. Enter the no ip tcp
header-compression command on the asynchronous interface.
5800-NAS# show ip int async 1/2/02
Async1/2/02 is up, line protocol is up
Interface is unnumbered. Using address of FastEthernet0/1/0 (172.22.66.23)
Broadcast address is 255.255.255.255
Peer address is 172.22.90.2
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is enabled
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is disabled
IP fast switching on the same interface is disabled
IP multicast fast switching is enabled
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is enabled and compressing
RTP/IP header compression is disabled
Probe proxy name replies are disabled
Gateway Discovery is disabled
Policy routing is disabled
Network address translation is disabled
Step 3 Look at the fast-switching cache in action. Notice that only packets destined to the Fast Ethernet
interface are currently cached.
5800-NAS# show ip cache
IP routing cache 3 entries, 560 bytes
109 adds, 106 invalidates, 3 refcounts
Minimum invalidation interval 2 seconds, maximum interval 5 seconds,
quiet interval 3 seconds, threshold 0 requests
Invalidation rate 0 in last second, 0 in last 3 seconds
Last full cache invalidation occurred 22:17:01 ago
Prefix/Length Age Interface Next Hop
172.61.0.0/16 15:13:22 FastEthernet0/1 172.22.66.1
172.22.67.67/32 00:06:10 FastEthernet0/1 172.22.67.2
172.22.68.67/32 00:06:09 FastEthernet0/1 172.22.68.3
5800-NAS# show interface async 1/2/02 stat
Async1/2/02
Switching path Pkts In Chars In Pkts Out Chars Out
Processor 909 57050 1022 67918
Route cache 155 14260 0 0
Total 1064 71310 1022 6791