Прошивка коммутатора (пришлось перепрошить с V2.0.12.G):
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ZXR10 2928-SI Version Number : 29SI Series V2.0.12.V
Результаты:
Accel (отключенная opt82 на свиче) - все ок:
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[2015-03-15 14:17:27.276] em1.555: : recv [DHCPv4 Discover xid=57a87918 chaddr=00:26:82:51:ed:85 <Message-Type Discover> <Max-Message-Size 1024> <Client-ID 0100268251ed
85> <Host-Name TL-WR741ND> <Vendor-Class 4d53465420352e30> <Request-IP 172.16.40.2> <Request-List Subnet,Router,DNS,Domain-Name,Route,Vendor-Specific,44,46,47,Classless
-Route,249>]
[2015-03-15 14:17:27.276] ipoe0: 19142ecf755f3f0d: create interface ipoe0 parent em1.555
[2015-03-15 14:17:27.281] ipoe0: 19142ecf755f3f0d: em1.555: authentication succeeded
[2015-03-15 14:17:27.281] ipoe0: 19142ecf755f3f0d: send [DHCPv4 Offer xid=57a87918 yiaddr=172.16.40.2 chaddr=00:26:82:51:ed:85 <Message-Type Offer> <Server-ID 172.16.40
.1> <Lease-Time 180> <Router 172.16.40.1> <Subnet 255.255.255.0> <DNS 8.8.8.8,8.8.4.4>]
[2015-03-15 14:17:27.282] ipoe0: 19142ecf755f3f0d: recv [DHCPv4 Request xid=57a87918 chaddr=00:26:82:51:ed:85 <Message-Type Request> <Max-Message-Size 1024> <Client-ID
0100268251ed85> <Host-Name TL-WR741ND> <Vendor-Class 4d53465420352e30> <Request-IP 172.16.40.2> <Server-ID 172.16.40.1> <Request-List Subnet,Router,DNS,Domain-Name,Rout
e,Vendor-Specific,44,46,47,Classless-Route,249>]
[2015-03-15 14:17:27.282] ipoe0: 19142ecf755f3f0d: send [DHCPv4 Ack xid=57a87918 yiaddr=172.16.40.2 chaddr=00:26:82:51:ed:85 <Message-Type Ack> <Server-ID 172.16.40.1>
<Lease-Time 180> <Router 172.16.40.1> <Subnet 255.255.255.0> <DNS 8.8.8.8,8.8.4.4>]
[2015-03-15 14:17:27.285] ipoe0: 19142ecf755f3f0d: ipoe: session started
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[2015-03-15 17:08:11.090] em1.555: : recv [DHCPv4 Discover xid=377e1747 chaddr=00:26:82:51:ed:85 <Message-Type Discover> <Max-Message-Size 1024> <Client-ID 0100268251ed
85> <Host-Name TL-WR741ND> <Vendor-Class 4d53465420352e30> <Request-IP 172.16.40.2> <Request-List Subnet,Router,DNS,Domain-Name,Route,Vendor-Specific,44,46,47,Classless
-Route,249> <Relay-Agent {Agent-Circuit-ID _0004022b0001} {Agent-Remote-ID _00060019c632990c}>]
[2015-03-15 17:08:11.091] ipoe0: 19142ecf755f42f6: create interface ipoe0 parent em1.555
[2015-03-15 17:08:11.097] ipoe0: 19142ecf755f42f6: em1.555: authentication succeeded
[2015-03-15 17:08:11.097] ipoe0: 19142ecf755f42f6: send [DHCPv4 Offer xid=377e1747 yiaddr=172.16.40.2 chaddr=00:26:82:51:ed:85 <Message-Type Offer> <Server-ID 172.16.40
.1> <Lease-Time 180> <Router 172.16.40.1> <Subnet 255.255.255.0> <DNS 8.8.8.8,8.8.4.4>]
[2015-03-15 17:08:13.094] ipoe0: 19142ecf755f42f6: recv [DHCPv4 Discover xid=377e1747 chaddr=00:26:82:51:ed:85 <Message-Type Discover> <Max-Message-Size 1024> <Client-I
D 0100268251ed85> <Host-Name TL-WR741ND> <Vendor-Class 4d53465420352e30> <Request-IP 172.16.40.2> <Request-List Subnet,Router,DNS,Domain-Name,Route,Vendor-Specific,44,4
6,47,Classless-Route,249> <Relay-Agent {Agent-Circuit-ID _0004022b0001} {Agent-Remote-ID _00060019c632990c}>]
[2015-03-15 17:08:13.094] ipoe0: 19142ecf755f42f6: send [DHCPv4 Offer xid=377e1747 yiaddr=172.16.40.2 chaddr=00:26:82:51:ed:85 <Message-Type Offer> <Server-ID 172.16.40
.1> <Lease-Time 180> <Router 172.16.40.1> <Subnet 255.255.255.0> <DNS 8.8.8.8,8.8.4.4>]
[2015-03-15 17:08:15.098] ipoe0: 19142ecf755f42f6: recv [DHCPv4 Discover xid=377e1747 chaddr=00:26:82:51:ed:85 <Message-Type Discover> <Max-Message-Size 1024> <Client-I
D 0100268251ed85> <Host-Name TL-WR741ND> <Vendor-Class 4d53465420352e30> <Request-IP 172.16.40.2> <Request-List Subnet,Router,DNS,Domain-Name,Route,Vendor-Specific,44,4
6,47,Classless-Route,249> <Relay-Agent {Agent-Circuit-ID _0004022b0001} {Agent-Remote-ID _00060019c632990c}>]
[2015-03-15 17:08:15.098] ipoe0: 19142ecf755f42f6: send [DHCPv4 Offer xid=377e1747 yiaddr=172.16.40.2 chaddr=00:26:82:51:ed:85 <Message-Type Offer> <Server-ID 172.16.40
.1> <Lease-Time 180> <Router 172.16.40.1> <Subnet 255.255.255.0> <DNS 8.8.8.8,8.8.4.4>]
[2015-03-15 17:08:19.109] ipoe0: 19142ecf755f42f6: recv [DHCPv4 Discover xid=377e1747 chaddr=00:26:82:51:ed:85 <Message-Type Discover> <Max-Message-Size 1024> <Client-I
D 0100268251ed85> <Host-Name TL-WR741ND> <Vendor-Class 4d53465420352e30> <Request-IP 172.16.40.2> <Request-List Subnet,Router,DNS,Domain-Name,Route,Vendor-Specific,44,4
6,47,Classless-Route,249> <Relay-Agent {Agent-Circuit-ID _0004022b0001} {Agent-Remote-ID _00060019c632990c}>]
[2015-03-15 17:08:19.109] ipoe0: 19142ecf755f42f6: send [DHCPv4 Offer xid=377e1747 yiaddr=172.16.40.2 chaddr=00:26:82:51:ed:85 <Message-Type Offer> <Server-ID 172.16.40
.1> <Lease-Time 180> <Router 172.16.40.1> <Subnet 255.255.255.0> <DNS 8.8.8.8,8.8.4.4>]
[2015-03-15 17:08:21.097] ipoe0: 19142ecf755f42f6: ipoe: session timed out
[2015-03-15 17:08:21.097] ipoe0: 19142ecf755f42f6: terminate
[2015-03-15 17:08:21.097] ipoe0: 19142ecf755f42f6: ipoe: session finished
В результате анализа tcpdump-ом была обнаружена одна деталь(единственное различие):
ISC:
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bootps > 255.255.255.255.bootpc: [udp sum ok]Code: Select all
bootps > 255.255.255.255.bootpc: [no cksum]Таких коммутаторов на сети около 70%, решения нет?
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Подробный дамп accel:
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[root@nas1 ~]# tcpdump -vvi em1.555
tcpdump: listening on em1.555, link-type EN10MB (Ethernet), capture size 65535 bytes
18:30:26.803580 IP (tos 0x0, ttl 64, id 35803, offset 0, flags [none], proto UDP (17), length 596)
0.0.0.0.bootpc > 255.255.255.255.bootps: [udp sum ok] BOOTP/DHCP, Request from 00:26:82:51:ed:85 (oui Unknown), length 568, xid 0x445c6e2f, Flags [Broadcast] (0x8000)
Client-Ethernet-Address 00:26:82:51:ed:85 (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
MSZ Option 57, length 2: 1024
Client-ID Option 61, length 7: ether 00:26:82:51:ed:85
Hostname Option 12, length 10: "TL-WR741ND"
Vendor-Class Option 60, length 8: "MSFT 5.0"
Requested-IP Option 50, length 4: 172.16.40.2
Parameter-Request Option 55, length 11:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Static-Route, Vendor-Option, Netbios-Name-Server, Netbios-Node
Netbios-Scope, Classless-Static-Route, Classless-Static-Route-Microsoft
Agent-Information Option 82, length 18:
Circuit-ID SubOption 1, length 6: ^@^D^B+^@^A
Remote-ID SubOption 2, length 8: ^@^F^@^YM-F2M-^Y^L
18:30:26.809364 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 306)
172.16.40.1.bootps > 255.255.255.255.bootpc: [no cksum] BOOTP/DHCP, Reply, length 278, xid 0x445c6e2f, Flags [Broadcast] (0x8000)
Your-IP 172.16.40.2
Client-Ethernet-Address 00:26:82:51:ed:85 (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Offer
Server-ID Option 54, length 4: 172.16.40.1
Lease-Time Option 51, length 4: 180
Default-Gateway Option 3, length 4: 172.16.40.1
Subnet-Mask Option 1, length 4: 255.255.255.0
Domain-Name-Server Option 6, length 8: google-public-dns-a.google.com,google-public-dns-b.google.com
18:30:28.807302 IP (tos 0x0, ttl 64, id 42090, offset 0, flags [none], proto UDP (17), length 596)
0.0.0.0.bootpc > 255.255.255.255.bootps: [udp sum ok] BOOTP/DHCP, Request from 00:26:82:51:ed:85 (oui Unknown), length 568, xid 0x445c6e2f, Flags [Broadcast] (0x8000)
Client-Ethernet-Address 00:26:82:51:ed:85 (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
MSZ Option 57, length 2: 1024
Client-ID Option 61, length 7: ether 00:26:82:51:ed:85
Hostname Option 12, length 10: "TL-WR741ND"
Vendor-Class Option 60, length 8: "MSFT 5.0"
Requested-IP Option 50, length 4: 172.16.40.2
Parameter-Request Option 55, length 11:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Static-Route, Vendor-Option, Netbios-Name-Server, Netbios-Node
Netbios-Scope, Classless-Static-Route, Classless-Static-Route-Microsoft
Agent-Information Option 82, length 18:
Circuit-ID SubOption 1, length 6: ^@^D^B+^@^A
Remote-ID SubOption 2, length 8: ^@^F^@^YM-F2M-^Y^L
18:30:28.807669 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 306)
172.16.40.1.bootps > 255.255.255.255.bootpc: [no cksum] BOOTP/DHCP, Reply, length 278, xid 0x445c6e2f, Flags [Broadcast] (0x8000)
Your-IP 172.16.40.2
Client-Ethernet-Address 00:26:82:51:ed:85 (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Offer
Server-ID Option 54, length 4: 172.16.40.1
Lease-Time Option 51, length 4: 180
Default-Gateway Option 3, length 4: 172.16.40.1
Subnet-Mask Option 1, length 4: 255.255.255.0
Domain-Name-Server Option 6, length 8: google-public-dns-a.google.com,google-public-dns-b.google.com
18:30:30.811543 IP (tos 0x0, ttl 64, id 46129, offset 0, flags [none], proto UDP (17), length 596)
0.0.0.0.bootpc > 255.255.255.255.bootps: [udp sum ok] BOOTP/DHCP, Request from 00:26:82:51:ed:85 (oui Unknown), length 568, xid 0x445c6e2f, Flags [Broadcast] (0x8000)
Client-Ethernet-Address 00:26:82:51:ed:85 (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
MSZ Option 57, length 2: 1024
Client-ID Option 61, length 7: ether 00:26:82:51:ed:85
Hostname Option 12, length 10: "TL-WR741ND"
Vendor-Class Option 60, length 8: "MSFT 5.0"
Requested-IP Option 50, length 4: 172.16.40.2
Parameter-Request Option 55, length 11:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Static-Route, Vendor-Option, Netbios-Name-Server, Netbios-Node
Netbios-Scope, Classless-Static-Route, Classless-Static-Route-Microsoft
Agent-Information Option 82, length 18:
Circuit-ID SubOption 1, length 6: ^@^D^B+^@^A
Remote-ID SubOption 2, length 8: ^@^F^@^YM-F2M-^Y^L
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[root@nas1 ~]# tcpdump -vvi em1.555
tcpdump: listening on em1.555, link-type EN10MB (Ethernet), capture size 65535 bytes
18:21:30.667451 IP (tos 0x0, ttl 64, id 59391, offset 0, flags [none], proto UDP (17), length 596)
0.0.0.0.bootpc > 255.255.255.255.bootps: [udp sum ok] BOOTP/DHCP, Request from 00:26:82:51:ed:85 (oui Unknown), length 568, xid 0x5978cdb0, Flags [Broadcast] (0x8000)
Client-Ethernet-Address 00:26:82:51:ed:85 (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
MSZ Option 57, length 2: 1024
Client-ID Option 61, length 7: ether 00:26:82:51:ed:85
Hostname Option 12, length 10: "TL-WR741ND"
Vendor-Class Option 60, length 8: "MSFT 5.0"
Requested-IP Option 50, length 4: 172.16.40.2
Parameter-Request Option 55, length 11:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Static-Route, Vendor-Option, Netbios-Name-Server, Netbios-Node
Netbios-Scope, Classless-Static-Route, Classless-Static-Route-Microsoft
Agent-Information Option 82, length 18:
Circuit-ID SubOption 1, length 6: ^@^D^B+^@^A
Remote-ID SubOption 2, length 8: ^@^F^@^YM-F2M-^Y^L
18:21:31.836163 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)
172.16.40.1.bootps > 255.255.255.255.bootpc: [udp sum ok] BOOTP/DHCP, Reply, length 300, xid 0x5978cdb0, Flags [Broadcast] (0x8000)
Your-IP 172.16.40.2
Client-Ethernet-Address 00:26:82:51:ed:85 (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Offer
Server-ID Option 54, length 4: 172.16.40.1
Lease-Time Option 51, length 4: 600
Subnet-Mask Option 1, length 4: 255.255.255.0
Domain-Name Option 15, length 11: "example.org"
Agent-Information Option 82, length 18:
Circuit-ID SubOption 1, length 6: ^@^D^B+^@^A
Remote-ID SubOption 2, length 8: ^@^F^@^YM-F2M-^Y^L
18:21:31.846215 IP (tos 0x0, ttl 64, id 20680, offset 0, flags [none], proto UDP (17), length 596)
0.0.0.0.bootpc > 255.255.255.255.bootps: [udp sum ok] BOOTP/DHCP, Request from 00:26:82:51:ed:85 (oui Unknown), length 568, xid 0x5978cdb0, Flags [Broadcast] (0x8000)
Client-Ethernet-Address 00:26:82:51:ed:85 (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
MSZ Option 57, length 2: 1024
Client-ID Option 61, length 7: ether 00:26:82:51:ed:85
Hostname Option 12, length 10: "TL-WR741ND"
Vendor-Class Option 60, length 8: "MSFT 5.0"
Requested-IP Option 50, length 4: 172.16.40.2
Server-ID Option 54, length 4: 172.16.40.1
Parameter-Request Option 55, length 11:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Static-Route, Vendor-Option, Netbios-Name-Server, Netbios-Node
Netbios-Scope, Classless-Static-Route, Classless-Static-Route-Microsoft
Agent-Information Option 82, length 18:
Circuit-ID SubOption 1, length 6: ^@^D^B+^@^A
Remote-ID SubOption 2, length 8: ^@^F^@^YM-F2M-^Y^L
18:21:31.878529 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)
172.16.40.1.bootps > 255.255.255.255.bootpc: [udp sum ok] BOOTP/DHCP, Reply, length 300, xid 0x5978cdb0, Flags [Broadcast] (0x8000)
Your-IP 172.16.40.2
Client-Ethernet-Address 00:26:82:51:ed:85 (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: ACK
Server-ID Option 54, length 4: 172.16.40.1
Lease-Time Option 51, length 4: 600
Subnet-Mask Option 1, length 4: 255.255.255.0
Domain-Name Option 15, length 11: "example.org"
Agent-Information Option 82, length 18:
Circuit-ID SubOption 1, length 6: ^@^D^B+^@^A
Remote-ID SubOption 2, length 8: ^@^F^@^YM-F2M-^Y^L
18:21:31.890024 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 172.16.40.2 tell 172.16.40.2, length 46