02-10-2005 08:20 AM - edited 03-02-2019 09:35 PM
Hello,
i have a strange Problem with a 831 and a 1712 router:
data-download (ftp, pop3, www, ssh(scp)) is really fast, but data-upload works only from one workstation in the internal lan. on all other workstations an upload (smtp, ftp, ssh(scp), www) stops after a few kb´s.
i thought it is a cbac problem, but disabling inspection and adding a acl to the dialer interface did not solve the problem.
IOS:
Cisco IOS Software, C1700 Software (C1700-K9O3SY7-M), Version 12.3(7)XR3, RELEASE SOFTWARE (fc2)
Cisco IOS Software, C831 Software (C831-K9O3SY6-M), Version 12.3(7)T3, RELEASE SOFTWARE (fc2)
the config of the 831 is attached (config of 1712 is nearly the same).
Solved! Go to Solution.
02-12-2005 06:03 PM
This will probably fix it:
int Dialer0
ip mtu 1492
leave the tcp-adjust as it is though!
Regards, Igor
02-10-2005 01:00 PM
Hello,
I think your configuration was not attached, can you post it again ?
Regards,
GP
02-11-2005 12:54 PM
hello,
here the first part of the config of the 831. sorry
it was not attached to my fist posting.
!
version 12.3
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service compress-config
service sequence-numbers
!
hostname itlg
!
boot-start-marker
boot-end-marker
!
security authentication failure rate 3 log
security passwords min-length 6
no logging buffered
no logging console
enable secret 5 xxxxxx
!
username admin secret 5 xxxxxx
username sdmadmin privilege 15 secret 5 xxxxxx
clock timezone PCTime 1
clock summer-time PCTime date Mar 30 2003 2:00 Oct 26 2003 3:00
no aaa new-model
ip subnet-zero
no ip source-route
ip domain name intertrend.de
ip name-server 195.247.131.34
ip dhcp excluded-address 10.0.1.1 10.0.1.199
ip dhcp excluded-address 10.0.1.221 10.0.1.254
!
ip dhcp pool general
network 10.0.1.0 255.255.255.0
dns-server 195.247.131.34
default-router 10.0.1.1
!
!
no ip bootp server
ip cef
ip inspect name DEFAULT100 cuseeme
ip inspect name DEFAULT100 esmtp
ip inspect name DEFAULT100 ftp
ip inspect name DEFAULT100 h323
ip inspect name DEFAULT100 icmp
ip inspect name DEFAULT100 netshow
ip inspect name DEFAULT100 rcmd
ip inspect name DEFAULT100 realaudio
ip inspect name DEFAULT100 rtsp
ip inspect name DEFAULT100 sqlnet
ip inspect name DEFAULT100 streamworks
ip inspect name DEFAULT100 tcp
ip inspect name DEFAULT100 tftp
ip inspect name DEFAULT100 udp
ip inspect name DEFAULT100 vdolive
ip audit po max-events 100
ip ssh version 2
no ftp-server write-enable
!
crypto pki trustpoint test_trustpoint_config_created_for_sdm
subject-name e=sdmtest@sdmtest.com
revocation-check crl
!
!
!
!
!
crypto isakmp policy 1
encr 3des
authentication pre-share
group 2
crypto isakmp key xxxxxxxxxxxxxxxxxx address xxx.xxx.xxx.xxx
crypto isakmp key xxxxxxxxxxxxxxxxxx address 0.0.0.0 0.0.0.0
!
!
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec transform-set ESP-3DES-SHA1 esp-3des esp-sha-hmac
!
crypto ipsec profile SDM_Profile1
set transform-set ESP-3DES-SHA
!
crypto ipsec profile SDM_Profile2
set transform-set ESP-3DES-SHA1
!
!
!
!
interface Tunnel0
bandwidth 1000
ip address 10.103.0.179 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip mtu 1400
ip nhrp authentication xxxxxx
ip nhrp map 10.103.0.1 xxx.xxx.xxx.xxx
ip nhrp map multicast xxx.xxx.xxx.xxx
ip nhrp network-id 100000
ip nhrp holdtime 360
ip nhrp nhs 10.103.0.1
ip nhrp registration no-unique
ip route-cache flow
delay 1000
tunnel source Dialer0
tunnel mode gre multipoint
tunnel key 100000
tunnel protection ipsec profile SDM_Profile2
!
interface Null0
no ip unreachables
!
interface Ethernet0
description $ETH-LAN$$FW_INSIDE$
ip address 10.0.1.1 255.255.255.0
ip access-group 100 in
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
ip inspect DEFAULT100 in
ip route-cache flow
ip tcp adjust-mss 1452
no cdp enable
hold-queue 32 in
!
interface Ethernet1
description $ETH-WAN$
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
ip route-cache flow
duplex auto
pppoe enable
pppoe-client dial-pool-number 1
no cdp enable
!
interface Dialer0
description $FW_OUTSIDE$
ip address negotiated
ip access-group 101 in
no ip redirects
no ip unreachables
no ip proxy-arp
ip mtu 1452
ip nat outside
encapsulation ppp
ip route-cache flow
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication pap callin
ppp pap sent-username xxxxxxxxxxxx password 7 xxxxxxx
!
router eigrp 1000
network 10.0.0.0
network 192.0.0.0 0.255.255.255
no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
ip http server
ip http authentication local
ip http secure-server
ip nat inside source list natin2out interface Dialer0 overload
second part follows in my next posting.
regards
carsten
02-11-2005 12:55 PM
hello again,
here the second part of my config:
!
!
ip access-list extended natin2out
remark SDM_ACL Category=2
permit ip 10.0.1.0 0.0.0.255 any
access-list 23 remark SDM_ACL Category=17
access-list 23 permit xxx.xxx.xxx.xxx
access-list 23 permit 10.0.1.0 0.0.0.255
access-list 100 remark auto generated by SDM firewall configuration
access-list 100 remark SDM_ACL Category=1
access-list 100 deny ip host 255.255.255.255 any
access-list 100 deny ip 127.0.0.0 0.255.255.255 any
access-list 100 permit ip any any
access-list 101 remark auto generated by SDM firewall configuration
access-list 101 remark SDM_ACL Category=1
access-list 101 remark Auto generated by SDM for NTP (123) ptbtime2.ptb.de
access-list 101 permit udp host 192.53.103.104 eq ntp any eq ntp
access-list 101 remark Auto generated by SDM for NTP (123) ptbtime1.ptb.de
access-list 101 permit udp host 192.53.103.103 eq ntp any eq ntp
access-list 101 permit udp any any eq non500-isakmp
access-list 101 permit udp any any eq isakmp
access-list 101 permit esp any any
access-list 101 permit ahp any any
access-list 101 permit gre any any
access-list 101 permit tcp host xxx.xxx.xxx.xxx any eq 22
access-list 101 permit tcp host xxx.xxx.xxx.xxx any eq 443
access-list 101 permit icmp any any echo-reply
access-list 101 permit icmp any any time-exceeded
access-list 101 permit icmp any any unreachable
access-list 101 deny ip 10.0.0.0 0.255.255.255 any
access-list 101 deny ip 172.16.0.0 0.15.255.255 any
access-list 101 deny ip 192.168.0.0 0.0.255.255 any
access-list 101 deny ip 127.0.0.0 0.255.255.255 any
access-list 101 deny ip host 255.255.255.255 any
access-list 101 deny ip host 0.0.0.0 any
access-list 101 deny ip any any log
dialer-list 1 protocol ip permit
no cdp run
!
control-plane
!
!
line con 0
exec-timeout 120 0
no modem enable
transport preferred all
transport output all
stopbits 1
line aux 0
transport preferred all
transport output all
line vty 0 4
access-class 23 in
exec-timeout 120 0
login local
length 0
transport preferred all
transport input ssh
transport output all
!
scheduler max-task-time 5000
scheduler interval 500
ntp clock-period 17180021
ntp server 192.53.103.103 prefer
ntp server 192.53.103.104
!
end
regards
carsten
02-12-2005 06:03 PM
This will probably fix it:
int Dialer0
ip mtu 1492
leave the tcp-adjust as it is though!
Regards, Igor
02-13-2005 03:53 PM
Thank you very much.
It seams to work with the 831. I´ll test it tomorow
with the 1712.
I wonder why cisco sets the mtu of the dialer interface to the same value like "ip tcp adjust-mss"
on the lan interface if router is configured with the
newest SDM although the documentation suggests
the value you said...?!?!
Regards
Carsten
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