[mpls-linux-general] ldp crash on "add route"
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[mpls-linux-general] ldp crash on "add route"
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From: Yvan P. <yv...@vi...> - 2001-07-20 20:46:35
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Hi,
I am trying to add routes manually within ldp_linux but the program aborts.
I still use the same configuration (chain of 5 machines).
Routing information:
LER A
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.2.2 * 255.255.255.255 UH 0 0 0 eth2
10.0.1.1 * 255.255.255.255 UH 0 0 0 eth1
10.0.1.0 * 255.255.255.0 U 0 0 0 eth1
10.0.2.0 * 255.255.255.0 U 0 0 0 eth2
subnet * 255.255.255.0 U 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default gw 0.0.0.0 UG 0 0 0 eth0
LSR
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.2.1 * 255.255.255.255 UH 0 0 0 eth2
10.0.3.1 * 255.255.255.255 UH 0 0 0 eth3
10.0.3.2 * 255.255.255.255 UH 0 0 0 eth3
10.0.2.0 * 255.255.255.0 U 0 0 0 eth2
10.0.3.0 * 255.255.255.0 U 0 0 0 eth3
subnet * 255.255.255.0 U 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default gw 0.0.0.0 UG 0 0 0 eth0
LER B
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.4.2 * 255.255.255.255 UH 0 0 0 eth4
10.0.4.0 * 255.255.255.0 U 0 0 0 eth4
10.0.3.0 * 255.255.255.0 U 0 0 0 eth3
subnet * 255.255.255.0 U 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default gateway 0.0.0.0 UG 0 0 0 eth0
I run ldp_linux on the 3 routers, then on LER B I try to add the route
10.0.1.1/32 via 10.0.3.1 and ldp_linux crashes (see below output with
gdb). My goal is to add 10.0.1.1/32 on LERB, 10.0.4.2/32 on LERA, and
both 10.0.1.1/32 and 10.0.4.2/32 on LSR. If I do so, ldp should establish
the LSPs between 10.0.4.2 and 10.0.1.1, correct ?
=====================output of gdb on LERB===========================
Adding route 0a000101/32 via 0
prompt>TCP_DATA
TCP_DATA 32
Before header decode: size = 32
Entered notif state
ldp_linux: ldp_fec.c:374: fec_tlv2ldp_fec: Assertion `0' failed.
Program received signal SIGABRT, Aborted.
0x40037d41 in __kill () from /lib/libc.so.6
(gdb) where
#0 0x40037d41 in __kill () from /lib/libc.so.6
#1 0x400379b6 in raise (sig=6) at ../sysdeps/posix/raise.c:27
#2 0x400390d8 in abort () at ../sysdeps/generic/abort.c:88
#3 0x40031bae in __assert_fail () at assert.c:59
#4 0x80601ca in fec_tlv2ldp_fec (tlv=0x8098d78, i=0, lf=0xbfffb804)
at ldp_fec.c:374
#5 0x806518a in ldp_notif_no_route (g=0x8079df0, s=0x8089a98, e=0x0,
s_attr=0x8098d20) at ldp_notif.c:236
#6 0x806505b in ldp_notif_process (g=0x8079df0, s=0x8089a98, a=0x0, e=0x0,
r_attr=0x8098d20) at ldp_notif.c:156
#7 0x805f192 in ldp_state_notif (g=0x8079df0, s=0x8089a98, adj=0x0,
entity=0x0, event=6, msg=0xbfffb95c, from=0xbffff94c)
at ldp_state_funcs.c:465
#8 0x805e5a1 in ldp_state_machine (g=0x8079df0, session=0x8089a98, adj=0x0,
entity=0x0, event=6, msg=0xbfffb95c, from=0xbffff94c)
at ldp_state_machine.c:397
#9 0x805e3f0 in ldp_event (g=0x8079df0, socket=10, user_from=0x0,
if_handle=0, buf=0x80759c0, extra=0x8089a98, event=LDP_EVENT_NOTIF)
at ldp_state_machine.c:317
#10 0x804acea in main (argc=1, argv=0xbffffb04) at ldp_linux.c:890
Do you have any idea of what is going on ?
Thanks,
Yvan
________________________________________________________________________
yv...@po... University of Virginia
http://www.pointurier.org Department of Computer Science
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