I have 4 7500 routers on my network running 12.2(12a) with dCEF enabled. It appears the CEF is functioning fine on Token Ring/Ethernet/Point-to-Point interfaces. However, it appears the majority of my frame-relay interfaces and sub-interfaces have punt adjacencies when I do my "show ip cef." What could be the cause? I probably have
about 100 frame subinterfaces on the following 7500 router. There are some frame interfaces that are working correctly. Here is an example:
kylex7500a#sh ad s5/0/5.3
Protocol Interface Address
IP Serial5/0/5.3 point2point(22)
s5/0/5.3 has a valid adjacency, but other interfaces on s5/0/5 do not. For
instance, s5/0/5.1 and s5/0/5.1 do not:
kylex7500a#sh ad s5/0/5.1
Protocol Interface Address
kylex7500a#sh ad s5/0/5.2
Protocol Interface Address
Here is the config for those interfaces:
interface Serial5/0/5
bandwidth 1544
no ip address
encapsulation frame-relay
no ip mroute-cache
logging event subif-link-status
logging event dlci-status-change
load-interval 30
fair-queue
serial restart-delay 0
!
interface Serial5/0/5.1 point-to-point
description frame-relay to mnstp002 dlci 255
ip address 172.16.19.1 255.255.255.252
no ip mroute-cache
frame-relay interface-dlci 255
!
interface Serial5/0/5.2 point-to-point
description frame-relay to vadan213 dlci 299
ip address 172.16.19.5 255.255.255.252
no ip mroute-cache
frame-relay interface-dlci 299
!
interface Serial5/0/5.3 point-to-point
description frame-relay to paroc202 dlci 230
ip address 172.16.19.9 255.255.255.252
no ip mroute-cache
frame-relay interface-dlci 230
Out s5/0/5.2 is subnet 162.128.161.192/26. Here is the output for the sh
ip cef command:
kylex7500a#sh ip cef 162.128.161.192 255.255.255.192
162.128.161.192/26, version 22177, per-destination sharing
0 packets, 0 bytes
via 172.16.19.6, Serial5/0/5.2, 0 dependencies
next hop 172.16.19.6, Serial5/0/5.2
valid punt adjacency
0 packets, 0 bytes switched through the prefix
tmstats: external 0 packets, 0 bytes
internal 0 packets, 0 bytes
30 second output rate 0 Kbits/sec
Out s5/0/5.3 is subnet 149.55.202.0/24. Here is the output for the show ip
cef command:
kylex7500a#sh ip cef 149.55.202.0 255.255.255.0
149.55.202.0/24, version 60823, per-destination sharing
0 packets, 0 bytes
via 172.16.19.10, Serial5/0/5.3, 0 dependencies
next hop 172.16.19.10, Serial5/0/5.3
valid adjacency
489327 packets, 98153222 bytes switched through the prefix
tmstats: external 0 packets, 0 bytes
internal 489327 packets, 98153222 bytes
30 second output rate 24 Kbits/sec
I see similar results from my other three 7500s and my two 7200s. However,
it appears from all of my 2600s that cef is working correctly. Any thoughts? Sorry for the long detail. Thanks.
