first of all: I know that on platform sup720 it is not possible to disable ip routing on a persistent basis. My question is: Why is there no populated routing-table on one special c65/sup720-3B/SXH7/several CEF720 modules+ACE. On this c65 we set the command "ip default-gateway" to reach an upstream DFG (in this case a FW). No need to route in this environment. BUT I would like to understand the empty routing table and the not running/disabled CEF ....
We have at least two SVIs up:
show ip int brief | exc unassign
Interface IP-Address OK? Method Status Protocol
Vlan281 x.x.x.x YES manual up up
Vlan621 192.168.128.5 YES NVRAM up up
BUT routing table is empty:
show ip route
Default gateway is 192.168.128.1
Host Gateway Last Use Total Uses Interface
ICMP redirect cache is empty
From the "show running" we see (different to our other c65's, most of them routing) that we set the ip default-gateway instead of a "ip route 0.0.0.0 0.0.0.0"
show run | inc default-gateway
ip default-gateway 192.168.128.1
CEF seems to be disabled/not running:
show cef state
common CEF enabled
IPv4 CEF Status:
CEF disabled/not running <--- WHY ???
dCEF disabled/not running
CEF switching disabled/not running
universal per-destination load sharing algorithm, id B0AD43FC
I am standby RRP: no
RF Peer Presence: no
RF PeerComm reached: no
RF Progression blocked: never
Redundancy mode: sso(3)
CEF NSF sync: disabled/not running
Does anybody know if there is a correlation between "ip default-gateway" and not populating the routing table and the CEF-output of the command above?
If this helps: two more commands
show ip protocols summary
Index Process Name
*** IP Routing is NSF aware ***
show ip route summary
IP routing table name is Default-IP-Routing-Table(0)
what I know is that if ip routing is disabled then you'll get the output you got for show ip route and CEF is disabled globally but this is for other platforms and I'm not sure it is acting the same for the 6500.
I also know this from the smaller, more software driven platforms. But on this HW-Router I thougt disableing cef is not possible? So I am wondering about the Routingtable. Imho this could be connect to the "ip default-gateway" command but I am not sure.