At 12:50 19/06/2001 +0300, Elijah Kagan wrote:
>Does anybody knows what is the 'permanent' keyword supposed to do?
>
>According to Cisco this keyword "...specifies that the route will not be
>removed, even if the interface shuts down".
Yup, that's what it does... I've just checked on 12.2(2)T and 12.0(17)S...
>If I understand it correctly 'ip route <net> <mask> <interface> permanent'
>should stay in the routing table even in case the <interface> is down.
>Basically, it is a shorter form of:
> ip route <net> <mask> <interface>
> ip route <net> <mask> Null0 254
>
>For some reason, this 'permanent' keyword doesn't work for me on 12.0(_)S.
>The route disappears when I shut its related interface.
>
>Am I wrong in my understanding of what 'permanent' does?
Check that the static route really is permanent eg:
alpha#sh ip route 10.4.5.0
Routing entry for 10.4.5.0/24
Known via "static", distance 1, metric 0 (connected)
Routing Descriptor Blocks:
* directly connected, via Serial1/0, permanent
^^^^^^^^^
Route metric is 0, traffic share count is 1
alpha#conf
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line. End with CNTL/Z.
alpha(config)#int ser 1/0
alpha(config-if)#shut
alpha(config-if)#^Z
alpha#sh ip route 10.4.5.0
Routing entry for 10.4.5.0/24
Known via "static", distance 1, metric 0 (connected)
Routing Descriptor Blocks:
* directly connected, via Serial1/0, permanent
Route metric is 0, traffic share count is 1
alpha#sh int ser 1/0
Serial1/0 is administratively down, line protocol is down
Hardware is QUICC Serial
Internet address is 192.168.9.2/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set
...
Looks okay...
philip
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