Well I've seen others mention it elsewhere, so I've given it a go. Not had any issues so far.I have no idea if that Cisco supports baby jumbo frames, but the Openreach VDSL infrastructure does. I can run full 1500 byte packets over a Vodafone business FTTC link by setting the interface MTU to 1508.
Building configuration...
Current configuration : 5197 bytes
!
! Last configuration change at 09:49:18 UTC Fri Apr 19 2019
version 15.2
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Cisco-1921
!
boot-start-marker
warm-reboot
boot-end-marker
!
!
enable secret 5 ****
enable password 7 ****
!
no aaa new-model
!
ip cef
!
!
!
!
ip dhcp pool main_dhcp_pool
network 192.168.0.0 255.255.255.0
default-router 192.168.0.1
dns-server 194.72.0.114 62.6.40.162
!
ip dhcp pool Kei-PC
host 192.168.0.2 255.255.255.0
client-identifier ****
client-name Kei-PC
!
ip dhcp pool Humax
host 192.168.0.4 255.255.255.0
client-identifier ****
client-name Humax
!
ip dhcp pool Kei-NAS
host 192.168.0.3 255.255.255.0
hardware-address ****
client-name Kei-NAS
!
ip dhcp pool Server
host 192.168.0.100 255.255.255.0
hardware-address ****
!
ip dhcp pool Marantz
host 192.168.0.5 255.255.255.0
client-identifier ****
!
ip dhcp pool Printer
host 192.168.0.6 255.255.255.0
client-identifier ****
client-name Printer
!
ip dhcp pool Panasonic
host 192.168.0.7 255.255.255.0
client-identifier ****
!
ip dhcp pool RPI3
host 192.168.0.8 255.255.255.0
client-identifier ****
!
!
!
ip domain name WesNet
ip name-server 194.72.0.114
ip name-server 62.6.40.162
no ipv6 cef
multilink bundle-name authenticated
!
!
!
license udi pid CISCO1921/K9 sn FCZ1810C0V2
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!
archive
path ftp://****@192.168.0.3/Cisco-1921/$h
write-memory
time-period 10080
!
!
controller VDSL 0/0/0
modem UKfeature under controller vdsl 0/0/0
!
!
!
!
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface GigabitEthernet0/1
ip address 192.168.0.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
duplex auto
speed auto
no mop enabled
!
interface ATM0/0/0
no ip address
shutdown
no atm ilmi-keepalive
!
interface Ethernet0/0/0
mtu 1508
no ip address
!
interface Ethernet0/0/0.101
encapsulation dot1Q 101
pppoe enable group global
pppoe-client dial-pool-number 1
pppoe-client ppp-max-payload 1500
!
interface Dialer1
ip address negotiated
ip access-group 101 in
no ip unreachables
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
ppp chap hostname [email protected]
ppp chap password 7 ****
ppp pap sent-username [email protected] password 7 ****
!
ip forward-protocol nd
!
ip http server
no ip http secure-server
ip http client source-interface GigabitEthernet0/1
!
ip nat inside source list 1 interface Dialer1 overload
ip nat inside source static udp 192.168.0.3 9987 interface Dialer1 9987
ip nat inside source static tcp 192.168.0.3 30033 interface Dialer1 30033
ip nat inside source static tcp 192.168.0.3 10011 interface Dialer1 10011
ip nat inside source static tcp 192.168.0.2 2564 interface Dialer1 2564
ip nat inside source static tcp 192.168.0.2 2565 interface Dialer1 2565
ip nat inside source static udp 192.168.0.2 2564 interface Dialer1 2564
ip nat inside source static tcp 192.168.0.3 9988 interface Dialer1 9988
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 192.168.0.0 255.255.255.0 GigabitEthernet0/1
!
access-list 1 remark INTERNET-ACCESS
access-list 1 permit 192.168.0.0 0.0.0.255
access-list 2 remark ONLY PERMIT TELNET FROM INTERNAL IPs
access-list 2 permit 192.168.0.0 0.0.0.255
access-list 101 deny ip 192.168.0.0 0.0.255.255 any
access-list 101 deny ip 172.16.0.0 0.15.255.255 any
access-list 101 deny ip 10.0.0.0 0.255.255.255 any
access-list 101 deny ip 127.0.0.0 0.255.255.255 any
access-list 101 deny ip 255.0.0.0 0.255.255.255 any
access-list 101 deny ip 248.0.0.0 7.255.255.255 any
access-list 101 deny ip host 0.0.0.0 any
access-list 101 deny ip host 255.255.255.255 any
access-list 101 deny tcp any any eq telnet
access-list 101 deny udp any any range 33400 34400
access-list 101 permit icmp any any net-unreachable
access-list 101 permit icmp any any host-unreachable
access-list 101 permit icmp any any port-unreachable
access-list 101 permit icmp any any packet-too-big
access-list 101 permit icmp any any administratively-prohibited
access-list 101 permit icmp any any source-quench
access-list 101 permit icmp any any ttl-exceeded
access-list 101 permit icmp any any echo-reply
access-list 101 permit tcp any any established
access-list 101 permit udp any any
access-list 101 permit tcp any any eq 54021
access-list 101 permit tcp any any eq 54022
access-list 101 permit tcp any any eq 2564
!
!
snmp-server community WesNet RO
snmp-server enable traps entity-sensor threshold
!
control-plane
!
!
no vstack
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
access-class 2 in
password 7 ****
login
transport input all
!
scheduler allocate 20000 1000
!
end
service internal
alias exec xdslctl test vdsl 0/0/0 modem exec /bin/xdslctl
Controller VDSL 0/0/0 is UP
Daemon Status: Up
XTU-R (DS) XTU-C (US)
Chip Vendor ID: 'BDCM' 'IFTN'
Chip Vendor Specific: 0x0000 0x71B0
Chip Vendor Country: 0xB500 0xB500
Modem Vendor ID: 'CSCO' ' '
Modem Vendor Specific: 0x4602 0x0000
Modem Vendor Country: 0xB500 0x0000
Serial Number Near: xxxxxxxxx 2911/K9 15.7(3)M3
Serial Number Far:
Modem Version Near: 15.7(3)M3
Modem Version Far: 0x71b0
Modem Status: TC Sync (Showtime!)
DSL Config Mode: AUTO
Trained Mode: G.992.1 (ADSL) Annex A
TC Mode: ATM
Selftest Result: 0x00
DELT configuration: enabled
DELT state: successful
Full inits: 2
Failed full inits: 0
Short inits: 0
Failed short inits: 0
Firmware Source File Name
-------- ------ ----------
VDSL user config flash0:23mar2017_39m_B_38u_24o_rc1_sdk_4.14l.04a-j.bin
Modem FW Version: 4.14L.04A
Modem PHY Version: A2pv6C039m.d24o_rc1
Trellis: ON ON
SRA: disabled disabled
SRA count: 0 0
Bit swap: enabled enabled
Bit swap count: 0 1660
Line Attenuation: 25.5 dB 14.5 dB
Signal Attenuation: 25.5 dB 0.0 dB
Noise Margin: 18.3 dB 17.0 dB
Attainable Rate: 11992 kbits/s 1352 kbits/s
Actual Power: 19.6 dBm 10.5 dBm
Total FECC: 0 0
Total ES: 0 0
Total SES: 0 0
Total LOSS: 0 0
Total UAS: 22 22
Total LPRS: 0 0
Total LOFS: 0 0
Total LOLS: 0 0
DS Channel1 DS Channel0 US Channel1 US Channel0
Speed (kbps): 0 6944 0 1024
SRA Previous Speed: 0 0 0 0
Previous Speed: 0 6944 0 1024
Total Cells: 0 645474777 0 0
User Cells: 0 109732266 0 0
Reed-Solomon EC: 0 0 0 0
CRC Errors: 0 0 0 0
Header Errors: 0 0 0 0
Interleave (ms): 0.00 0.25 0.00 0.25
Actual INP: 0.00 0.00 0.00 0.00
Cisco-1921>xdslctl
test vdsl 0/0/0 modem exec /bin/xdslctl
^
% Invalid input detected at '^' marker.
service internal
alias exec xdslctl test vdsl 0/0/0 modem exec /bin/xdslctl
That is what I meant. I’d already tried using en command to enter shell but dslstats then has problems logging in. I tried to set something in special login options but it didn’t work. It’d be nice to know what @iwrox did with special login.Cisco-1921>
_________^
Is this your problem? Try checking the box 'requires command to enter shell' and use 'en' in your settings, I think you have to be in privileged mode for it to work.
Is that what you meant by "outside of exec”
Thanks iwrox, that makes a lot more sense now I can see what you did. Let's just say that what I tried was a bit too "special" and leave it there.